Source: https://patents.google.com/patent/CN1239446C/en
Timestamp: 2020-01-28 14:40:43
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Matched Legal Cases: ['Application No.2001', 'application No.2001', 'Application No.7', 'Application No.8', 'application No.10', 'application No.10', 'application No.10', 'Application No.9']

CN1239446C - Condensed octocyclic aromatic compound, organic electroluminescent element and organic electroluminescent display - Google Patents
Condensed octocyclic aromatic compound, organic electroluminescent element and organic electroluminescent display Download PDF
CN1239446C
CN1239446C CNB021087091A CN02108709A CN1239446C CN 1239446 C CN1239446 C CN 1239446C CN B021087091 A CNB021087091 A CN B021087091A CN 02108709 A CN02108709 A CN 02108709A CN 1239446 C CN1239446 C CN 1239446C
CNB021087091A
CN1403427A (en
外山弥
松浦东
成泽俊明
2001-08-29 Priority to JP2001259684 priority Critical
2001-11-27 Priority to JP2001361504A priority patent/JP4024526B2/en
2003-03-19 Publication of CN1403427A publication Critical patent/CN1403427A/en
2006-02-01 Publication of CN1239446C publication Critical patent/CN1239446C/en
本发明的目的是提供利用新型稠合八环芳族化合物，和具有高红光色纯度和优异发光效率，发光亮度等的有机EL元件。 Object of the present invention is to provide the use of novel condensed eight-ring aromatic compound, and an organic EL element having high color purity of red light and excellent light emission efficiency, emission luminance and the like. 本发明的有机EL元件在正极和负极之间具有包括发光层的有机薄膜层。 The organic EL device of the present invention has an organic thin film layers including a light emitting layer between the positive electrode and the negative electrode. 有机薄膜层包含具有属于14、16和18的任一个的其中能够引入取代基的许多区域的稠合八环芳族化合物，以及该稠合八环芳族化合物具有点对称骨架。 The organic thin film layer comprising a plurality of regions capable of introducing a substituent having any one of 14, 16 and 18 belong to condensed eight-ring aromatic compound, and the eight-ring aromatic compound has a point-symmetrical skeleton fused.
稠合八环芳族化合物，和使用它的有机电致发光元件和有机电致发光显示器 Condensed eight-ring aromatic compound, and its use in organic electroluminescent element and an organic electroluminescent display
相关申请的交叉参考本申请以在2001年8月29日提出的日本专利申请No.2001-259684和2001年11月27日提出的日本专利申请No.2001-361504为基础，并要求其的优先权，它们的内容在这里引入供参考。 CROSS REFERENCE TO RELATED APPLICATIONS This application is based on Japanese patent in 2001 August 29 made of Japanese Patent Application No.2001-259684 and November 27, 2001 proposed application No.2001-361504 is based on and claims priority right, the contents of which are incorporated herein by reference.
本发明的背景本发明的领域本发明涉及适合用于有机电致发光(EL)元件的稠合八环芳族化合物，使用该稠合八环芳族化合物的有机EL元件，和使用该有机EL元件的有机EL显示器。 BACKGROUND OF THE INVENTION Field of the present invention is suitable for use in the present invention relates to an organic electroluminescence has fused (EL) element engagement eight-ring aromatic compound using the organic EL element eight fused ring aromatic compound, and use of the organic EL the organic EL display element.
相关领域的描述有机EL元件具有如自发光、快速响应等之类的特征，和它们于平板显示器上的应用是可预期的。 Description of Related Art An organic EL element having features such as self emission, fast response and the like, and their use in the flat panel display is contemplated. 当全色平板显示器通过使用有机EL元件得到实现时，要求能够分别发出三种原色(蓝色(B)，绿色(G)和红色(R))光的有机EL元件。 When the full-color flat panel display achieved by using an organic EL element capable of emitting the three primary colors are required (blue (B), green (G) and red (R & lt)) of the organic EL element light.
例如，在CWTang，SAVanSlyke，和CHChen，“Journal ofApplied Physics”Vol.65，3610(1989)中公开了作为有机EL元件的使用DCM染料的有机EL元件。 For example, in CWTang, SAVanSlyke, and CHChen, "Journal ofApplied Physics" Vol.65,3610 (1989) discloses an organic EL element using DCM dye as the organic EL element. 此外，在日本专利申请公开特许公报(JP-A)No.9-13024(日本专利申请No.7-160676)，JP-A No.9-296166(日本专利申请No.8-111437)，JP-A No.11-251061(日本专利申请No.10-50464)，JP-A No.11-251062(日本专利申请No.10-50465)，日本国家再公开(国家公开No.WO98/00474，日本专利申请No.10-503982)等中已经提出了使用能够发出红光的卟吩化合物的有机EL元件。 Further, in Japanese Patent Application Laid-Open Publication (JP-A) No.9-13024 (Japanese Patent Application No.7-160676), JP-A No.9-296166 (Japanese Patent Application No.8-111437), JP -A No.11-251061 (Japanese Patent application No.10-50464), JP-A No.11-251062 (Japanese Patent application No.10-50465), then Japanese national Publication (national Publication No.WO98 / 00474, Japanese Patent application No.10-503982), and the like have been proposed to use a porphin compound capable of emitting red light of the organic EL element. 而且，在JP-A No.11-144868(日本专利申请No.9-303047)中已经公开了使用能够发出红光的双蒽烯。 Further, in JP-A No.11-144868 (Japanese Patent Application No.9-303047) have been disclosed using bis anthrene capable of emitting red light.
然而，在这些有机EL元件中，存在着发光的颜色和发光效率在实际使用中不充分的问题，和需要在实际使用中进一步改进。 However, these organic EL elements, there are emission color and luminous efficiency are insufficient in actual use issues, and further improvements in actual use.
本发明的概述本发明集中解决这些问题，克服前述现有技术的缺陷，和实现以下目的。 SUMMARY OF THE INVENTION The present invention is focused on solving these problems, overcome the shortcomings of the prior art, and achieve the following objects. 即，本发明提供了具有高红光色纯度和优异发光效率，发光亮度等以及适合用于有机EL元件的稠合八环芳族化合物，使用该稠合八环芳族化合物和具有高红光色纯度和优异发光效率、发光亮度等的有机EL元件，以及高性能的和利用该有机EL元件的有机EL显示器。 That is, the present invention provides a high red color purity and excellent in emission efficiency, emission luminance, etc., and condensed eight-ring aromatic compound suitable for an organic EL element using the condensed eight-ring aromatic compound having a high red color purity and excellent light emission efficiency, emission luminance of the organic EL element and the like, as well as performance and utilization of the organic EL element organic EL display.
作为本发明人为克服以上缺陷进行了深入研究，结果发明：特定稠合八环芳族化合物具有高红光色纯度和优异的发光效率，发光亮度等，和尤其适于用来发射红光的有机EL元件。 As the present inventors to overcome the above defects of extensive studies, the results of the invention: the specific condensed eight-ring aromatic compound have high color purity of red light and excellent light emission efficiency, emission luminance and the like, and particularly suitable for the organic EL element emits red light . 有机EL元件和使用该稠合八环芳族化合物的有机EL显示器具有高红光色纯度和优异的发光效率，发光亮度等，并且是高性能的，和能够发出比通常结构亮度更高的光。 And using the organic EL element organic EL display condensed eight-ring aromatic compound have high color purity of red light and excellent light emission efficiency, emission luminance and the like, and are high-performance, and can emit brighter light than the normal structure. 此外，稠合八环芳族化合物具有优异的空穴(载体)或电子的可迁移性。 Moreover, eight-ring fused aromatic compound having excellent hole (carrier) or may be electronic mobility. 在空穴迁移层和电子迁移层的至少一种中使用稠合八环芳族化合物的有机EL元件和有机EL元件显示器具有高红光色纯度和优异的发光效率，发光亮度等，是高性能的，以及能够发出亮度高于通常结构的光。 In the hole transport layer and electron transport layer using at least one of the organic EL element eight fused ring aromatic compound, and an organic EL display device having high color purity of red light and excellent light emission efficiency, emission luminance, etc., it is high-performance, capable of emitting light and higher brightness than the conventional structure.
在本发明的稠合八环芳族化合物中，其中能够引入取代基的许多区域是14、16和18的任何一个，以及该稠合八环芳族化合物具有点对称骨架。 In the present invention, the condensed eight-ring aromatic compound, which is possible in many regions of the substituent introduced is any of 14, 16 and 18, and the condensed eight-ring aromatic compound has a point-symmetrical skeleton. (然而，排除其中能够引入取代基的区域全部是氢原子的这些情况。)本发明的有机EL元件包括有机薄膜层，它包括在正极和负极之间中的发光层，以及有机薄膜层含有稠合八环芳族化合物，其中稠合八环芳族化合物包括在14、16和18的任一个中具有许多其中能够引入取代基的区域，和具有点对称骨架的结构。 (However, the exclusion zone wherein the substituents can be introduced are all hydrogen atoms of these.) The organic EL element of the present invention include organic thin film layer, which is comprised between positive and negative electrodes of the light emitting layer, and an organic thin film layer contains a condensed eight-ring aromatic compound together, wherein the condensed eight-ring aromatic compound can be introduced which comprises a number of regions having a substituent, and a point-symmetrical skeleton structure having either a 14, 16 and 18.
本发明的有机EL显示器使用本发明的有机EL元件。 The organic EL display of the present invention using an organic EL element of the present invention.
更具体地说，本发明公开了以下内容：1.由以下结构式(1)-(3)中任一个表示的稠合八环芳族化合物，结构式(1) More particularly, the present invention discloses the following contents: 1 by the following formula (1) - condensed eight-ring aromatic compound (3) represented by any one of a structural formula (1)
结构式(1)中R1-R18可以彼此相同或不相同，表示氢原子或取代基，但排除其中全部是氢原子的情况；结构式(2) Of formula (1) R1-R18 may be the same or different from each other, represents a hydrogen atom or a substituent, but excluding the case where all are hydrogen atoms; structural formula (2) 结构式(2)中R1-R16可以彼此相同或不同，表示氢原子或取代基，但排除其中全部是氢原子的情况；结构式(3) (2) R1-R16 in the formula may be the same or different from each other, represent a hydrogen atom or a substituent, but excluding the case where all are hydrogen atoms; structural formula (3) 结构式(3)中R1-R14可以彼此相同或不同，表示氢原子或取代基，但排除其中全部是氢原子的情况。 In formula (3) R1-R14 may be the same or different from each other, represent a hydrogen atom or a substituent group, but excluding the case where all are hydrogen atoms.
2.根据上款1的稠合八环芳族化合物，其中取代基选自卤素原子，羟基，氰基，烷基，烷氧基，芳基，芳氧基，芳氨基，和二芳氨基。 The condensed eight-ring engagement to item 1 above aromatic compound, wherein the substituents are selected from halogen atoms, hydroxy, cyano, alkyl, alkoxy, aryl, aryloxy, arylamino, and diarylamino.
3.根据上款2的稠合八环芳族化合物，其中在结构式(1)中的R1-R18的至少一个，在结构式(2)中的R1-R16的至少一个，或在结构式(3)中的R1-R14的至少一个是芳基。 The fused preceding paragraph 2 laminated eight-ring aromatic compound, wherein in the formula (1) at least one of R1-R18 in the formula (2) at least one of R1-R16 or in the structural formula (3) in at least one of R1-R14 is aryl.
4.根据上款2的稠合八环芳族化合物，其中在结构式(1)中的R1-R18的至少一个，在结构式(2)中的R1-R16的至少一个，或在结构式(3)中的R1-R14的至少一个选自芳氨基和二芳氨基。 The fused preceding paragraph 2 laminated eight-ring aromatic compound, wherein in the formula (1) at least one of R1-R18 in the formula (2) at least one of R1-R16 or in the structural formula (3) in at least one of R1-R14 is selected from aromatic amino group and diarylamino group.
5.根据上款2的稠合八环芳族化合物，其中在结构式(1)中，R1-R8和R10-R17是氢原子，R9和R18选自苯基、苯氨基和二苯氨基，和在结构式(2)中，R1-R6，R8-R14，和R16是氢原子，及R7和R15选自苯基，苯氨基，和二苯氨基，或者在结构式(3)中，R1-R5，R7-R12，和R14是氢原子，以及R6和R13选自苯基、苯氨基和二苯氨基。 The condensed eight-ring engagement to item 2 aromatic compound, wherein in the formula (1), R1-R8 and R10-R17 is a hydrogen atom, R9 and R18 is selected from phenyl, phenylamino and diphenylamino, and in formula (2), R1-R6, R8-R14, and R16 are hydrogen atoms, and R7 and R15 is selected from phenyl, phenylamino, and diphenylamino, or in the formula (3), R1-R5, R7-R12, and R14 are hydrogen atoms, and R6 and R13 is selected from phenyl, phenylamino, and diphenylamino.
6.根据上款2的稠合八环芳族化合物，其中在结构式(1)中的R9和R18，在结构式(2)中的R7和R15，或在结构式(3)中的R6和R13是彼此相同的。 The condensed eight-ring aromatic compound according to item 2, wherein in the formula (1), R9 and R18, in formula (2) R7 and R15, or the formula R6 and R13 (3) is identical to each other.
7.根据上款1或2的稠合八环芳族化合物，其中稠合八环芳族化合物用于有机电致发光元件中。 According to item 1 or 2 fused engagement eight-ring aromatic compound, wherein eight fused ring aromatic compound for an organic electroluminescent element.
8.根据上款7的稠合八环芳族化合物，其中稠合八环芳族化合物用于有机电致发光元件的电子迁移层和发光层的至少一种。 The condensed eight-ring engagement to item 7 aromatic compound, wherein eight fused ring aromatic compound for the electron transport layer and the light emitting layer of the organic electroluminescence element of at least one.
9.根据上款7的稠合八环芳族化合物，其中稠合八环芳族化合物用于有机电致发光元件的空穴迁移层和发光层的至少一种。 7 according to the preceding paragraph engagement eight fused ring aromatic compound, wherein the condensed eight-ring aromatic compound for an organic hole transport layer and an electroluminescent layer of at least one of the light emitting element.
10.包括在正极和负极之间含有发光层的有机薄膜层的有机电致发光元件，以及该有机薄膜层含有稠合八环芳族化合物，其中稠合八环芳族化合物用以下结构式(1)-(3)中的任一个表示：结构式(1) 10. The organic thin film layer comprises between positive and negative electrodes of the light emitting layer containing the organic electroluminescence element, and the organic thin film layer contains a condensed eight-ring aromatic compound, wherein the condensed eight-ring aromatic compounds by the following structural formula (1 ) - any one of (3) represents: the structure of formula (1)
结构式(1)中R1-R18可以彼此相同或不相同，表示氢原子或取代基；结构式(2) Of formula (1) R1-R18 may be the same or different from each other, represents a hydrogen atom or a substituent; structural formula (2) 结构式(2)中R1-R16可以彼此相同或不同，表示氢原子或取代基；结构式(3) (2) R1-R16 in the formula may be the same or different from each other, represent a hydrogen atom or a substituent; of formula (3) 结构式(3)中R1-R14可以彼此相同或不同，表示氢原子或取代基。 Structural formula (3), R1-R14 may be the same or different from each other, represents a hydrogen atom or a substituent.
11.根据上款10的有机电致发光元件，其中发光层含有稠合八环芳族化合物。 10 11. The preceding paragraph organic electroluminescent element, wherein the light emitting layer contains a condensed eight-ring aromatic compound.
12.根据上款10的有机电致发光元件，其中取代基选自卤素原子，羟基，氰基，烷基，烷氧基，芳基，芳氧基，芳氨基，和二芳氨基。 12. The organic electroluminescent element according to item 10, wherein the substituents are selected from halogen atoms, hydroxy, cyano, alkyl, alkoxy, aryl, aryloxy, arylamino, and diarylamino.
13.根据上款10的有机电致发光元件，其中在结构式(1)中R1-R18的至少一个，在结构式(2)中R1-R16的至少一个，或在结构式(3)中R1-R14的至少一个是芳基。 13. The preceding paragraph 10 of the organic electroluminescent element, wherein at least one of the structural formula (1) R1-R18 in the formula (2) at least one of R1-R16 is, or in the formula (3) R1-R14 at least one is an aryl group.
14.根据上款10的有机电致发光元件，其中在结构式(1)中的R1-R18的至少一个，在结构式(2)中的R1-R16的至少一个，或在结构式(3)中的R1-R14的至少一个是芳氨基。 14. There preceding paragraph 10. The organic electroluminescent element, wherein in the formula (1) at least one of R1-R18 in the formula (2) at least one of R1-R16 or in the structural formula (3) at least one of R1-R14 is an aryl group.
15.根据上款10的有机电致发光元件，其中在结构式(1)中的R1-R18的至少一个，在结构式(2)中的R1-R16的至少一个，或在结构式(3)中的R1-R14的至少一个是二芳氨基。 15. There preceding paragraph 10. The organic electroluminescent element, wherein in the formula (1) at least one of R1-R18 in the formula (2) at least one of R1-R16 or in the structural formula (3) at least one of R1-R14 is a diarylamino group.
16.根据上款10的有机电致发光元件，其中有机薄膜层具有电子迁移层，和电子迁移层含有稠合八环芳族化合物。 10 16. The preceding paragraph organic electroluminescent device wherein an organic thin film layer has an electron transport layer, and an electron transport layer containing condensed eight-ring aromatic compound.
17.根据上款16的有机电致发光元件，其中在电子迁移层中含有的稠合八环芳族化合物中的R1-R18的至少一个是芳基。 17. The item 16 is an organic electroluminescent element, wherein the fused contained in the electron transport layer bonded R1-R18 of the eight-ring aromatic compound is at least one aryl group.
18.根据上款10的有机电致发光元件，其中有机薄膜层具有空穴迁移层，和该空穴迁移层含有稠合八环芳族化合物。 18. The organic electroluminescent element according to item 10, wherein the organic thin film layer has a hole transporting layer, the hole transport layer and containing condensed eight-ring aromatic compound.
19.根据上款18的有机电致发光元件，其中在空穴迁移层中含有的稠合八环芳族化合物中的R1-R18的至少一个选自芳氨基和二芳氨基。 19. The organic electroluminescent element according to item 18, wherein the fused contained in the hole transporting layer is bonded to R1-R18 eight-ring aromatic compound is selected from at least one aromatic amino group and diarylamino group.
20.根据上款10的有机电致发光元件，其中在结构式(1)中，R1-R8和R10-R17是氢原子，R9和R18选自苯基、苯氨基和二苯氨基，和在结构式(2)中，R1-R6，R8-R14，和R16是氢原子，及R7和R15选自苯基，苯氨基，和二苯氨基，或者在结构式(3)中，R1-R5，R7-R12，和R14是氢原子，以及R6和R13选自苯基、苯氨基和二苯氨基。 20. The organic electroluminescent element according to item 10, wherein in the formula (1), R1-R8 and R10-R17 is a hydrogen atom, R9 and R18 is selected from phenyl, phenylamino and diphenylamino, and the structural formula (2), R1-R6, R8-R14, and R16 are hydrogen atoms, and R7 and R15 is selected from phenyl, phenylamino, and diphenylamino, or in the formula (3), R1-R5, R7- R12, and R14 are hydrogen atoms, and R6 and R13 is selected from phenyl, phenylamino, and diphenylamino.
21.根据上款10的有机电致发光元件，其中在结构式(1)中的R9和R18，在结构式(2)中的R7和R15，或在结构式(3)中的R6和R13是彼此相同的。 21. to item 10 of the organic electroluminescent element, wherein, in the formula R9 (1) is and R18, in formula (2) R7 and R15, or the formula (3) R6 and R13 are identical with each other in accordance with of.
22.根据上款10的有机电致发光元件，其中发光层含有主体化合物，它的光吸收波长是在稠合八环芳族化合物的短波长侧，和它的发光波长是在稠合八环芳族化合物的光吸收波长的附近。 10 22. The preceding paragraph organic electroluminescent element, wherein the light emitting layer contains a host compound whose light absorption wavelength is on the short wavelength side of the condensed eight-ring aromatic compound, and its emission wavelength is condensed eight-ring aromatics light near the absorption wavelength.
23.根据上款10的有机电致发光元件，其中发光层含有n种的主体化合物，其中n表示1或1以上的整数，以及如果n种的主体化合物是第一种主体化合物，第二种主体化合物，...，第(n-1)种主体化合物，和依次来自具有最短光吸收波长的主体化合物的第n种主体化合物，那么第一种主体化合物的发光波长是在第二种主体化合物的光吸收波长的附近，第二种主体化合物的发光波长是在第三种主体化合物的光吸收波长的附近，...，第(n-1)种主体化合物的发光波长是在第n种主体化合物的光吸收波长的附近，和第n种主体化合物的发光波长是在稠合八环芳族化合物的光吸收波长的附近。 10 23. The preceding paragraph organic electroluminescent element, wherein the light emitting layer contains n types of host compounds, wherein n represents an integer of 1 or more, and if the n types of host compounds are a first host compound, a second host compound, ..., the (n-1) types of host compound, and the n th order from the host compound with the shortest light absorption wavelength of the host compound, then the emission wavelength of the first host compound is in a second body compound light emission wavelength near an absorption wavelength, the second host compound is in a third body of light near the absorption wavelength of the compound, ..., the emission wavelength of the (n-1) kinds of the host compound is in the n nearby, and n th light emission wavelength of the host compound species subject compound near the absorption wavelength of the light is condensed eight-ring aromatic compound absorption wavelength.
24.根据上款22或23的有机电致发光元件，其中主体化合物的含量是90mol或90mol以上，相对于1mol的稠合八环芳族化合物。 According to item 22 or 24. 23. The organic electroluminescent device, wherein the host compound content is 90mol 90mol or more, 1 mol of the condensed eight-ring aromatic compound with respect.
25.根据上款23的有机电致发光元件，其中发光波长在稠合八环芳族化合物的吸收波长附近的n种主体化合物之一的含量是1mol或1mol以上，相对于1mol的稠合八环芳族化合物。 23 of the preceding paragraph 25. The organic electroluminescent device, wherein the content of one of the emission wavelength near the absorption wavelength of the condensed eight-ring aromatic compound are n types of host compounds 1mol 1mol or more, with respect to 1mol fused eight ring aromatics.
26.根据上款22或23的有机电致发光元件，其中主体化合物是用以下结构式表示的铝喹啉配合物： 26. Aluminum quinoline complex organic electroluminescent element, wherein the body is a compound represented by the following structural formula according to item 22 or 23: 27.根据上款23的有机电致发光元件，其中主体化合物是用以下结构式表示的铝喹啉配合物和用以下结构式表示的红荧烯： 23 27. The preceding paragraph is an organic electroluminescent element, wherein the body is a compound represented by the following structural formula aluminum quinoline complexes and rubrene represented by the following structural formula:
28.根据上款10的有机电致发光元件，其中发光层的厚度是5-50nm。 28. The organic electroluminescent element according to item 10, wherein the thickness of the light emitting layer is 5-50nm.
29.根据上款10的有机电致发光元件，其中发射波长是600-650nm。 29. The organic electroluminescent element according to item 10, wherein the emission wavelength is 600-650nm.
30.包括根据上款10的有机电致发光元件的有机电致发光显示器。 30. According to item 10 comprising the organic electroluminescent light emitting element is an organic electroluminescent display.
31.根据上款30的有机电致发光显示器，其中有机电致发光显示器是无源矩阵板和有源矩阵板的一种，并且使用上款10的有机电致发光元件来发射红光。 30 31. The preceding paragraph is an organic electroluminescent display wherein the organic electroluminescent display is a passive matrix panel and an active matrix board 10 and the preceding paragraph using the organic electroluminescent element to emit red light.
附图简述图1是用于解释本发明有机EL元件中的层结构的实例的示意图。 BRIEF DESCRIPTION FIG. 1 is a schematic diagram for explaining examples of a layer structure of the organic EL device of the present invention is used.
图2是用于解释无源矩阵(passive matrix)型有机EL显示器(无源矩阵板)的结构实例的示意图。 FIG 2 is a schematic view of an organic EL display (passive matrix panel) of a structural example of a passive matrix (passive matrix) type for explaining.
图3是用于解释在图2中所示的无源矩阵型有机EL显示器(无源矩阵板)中电路的示意图。 FIG 3 is a schematic diagram shown in FIG. 2 in a passive matrix type organic EL display (passive matrix panel) for explaining the circuit.
图4是用于解释有源矩阵型有机EL显示器(有源矩阵板)的结构实例的示意图。 FIG 4 is a schematic view of an organic EL display (active matrix panel) of an active matrix configuration example for explaining.
图5是用于解释在图4中所示的有源矩阵型有机EL显示器(有源矩阵板)中的电路的示意图。 FIG 5 is a circuit in an active matrix type organic EL display (active matrix panel) shown in FIG. 4 is a schematic diagram for explaining.
优选实施方案的描述&lt;稠合八环芳族化合物&gt; Description of preferred embodiments & lt; condensed eight-ring aromatic compound & gt;
在稠合八环芳族化合物中，包括在14、16和18的任一个中具有其中能够引入取代基的许多区域，并且具有点对称骨架的结构(然而，排除其中能够引入取代基的区域全部是氢原子的这些情况)。 In the condensed eight-ring aromatic compounds, which comprises regions having a substituent group can be introduced in many regions, and has a point-symmetrical skeleton structure (however, excluding a substituent which can be introduced in any of 14, 16 and 18 all these are a hydrogen atom).
稠合八环芳族化合物的实例是稠合八环芳族烃化合物和它们的衍生物。 Examples of condensed eight-ring aromatic compound are condensed eight-ring aromatic hydrocarbon compounds and their derivatives. 具体地说，能够适宜地使用由以下结构式(1)-(3)的任一个表示的化合物。 Any one of compound (3) is represented by a - specifically, by the following formula (1) can be suitably used. 应该注意，由结构式(1)表示的稠合八环芳族化合物是二萘并(2'：3'-3：4)(2”：3”-8：9)芘化合物(下文简称为“二萘并芘化合物”)，由结构式(2)表示的稠合八环芳族化合物是2，3，8，9-二苯并二苯并[cd，jk]芘(下文简称为“二苯并二苯并芘化合物”)，和由结构式(3)表示的稠合八环芳族化合物是迫位(peri)-并四苯基并四苯(下文简称为“并四苯基并四苯化合物”)。 It should be noted, condensed eight-ring aromatic compound represented by the formula (1) is a dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene compound (hereinafter simply referred to as " dinaphtho pyrene compound "), a condensed eight-ring aromatic compound represented by the formula (2) is 2,3,8,9- dibenzo-dibenzo [cd, jk] pyrene (hereinafter abbreviated as" dibenz and dibenzopyrene compound "), and the condensed eight-ring aromatic compound represented by the formula (3) is a peri-position (peri) - and tetraphenyl naphthacene (hereinafter abbreviated as" and tetraphenyl naphthacene compound ").
结构式 Structure 在结构式(1)中，R1-R18可以彼此相同或不相同，和表示氢原子或取代基(但排除其中全部是氢原子的情况)。 In formula (1), R1-R18 may be the same or different, and represent a hydrogen atom or a substituent (excluding the case where all are hydrogen atoms).
结构式(2) Structural formula (2) 在结构式(2)，R1-R16可以彼此相同或不同，和表示氢原子或取代基(但排除其中全部是氢原子的情况)。 In formula (2), R1-R16 may be the same or different, and represent a hydrogen atom or a substituent (excluding the case where all are hydrogen atoms).
结构式(3) Structural formula (3) 在结构式(3)中，R1-R14可以彼此相同或不同，和表示氢原子或取代基(但排除其中全部是氢原子的情况)。 In formula (3), R1-R14 may be the same or different, and represent a hydrogen atom or a substituent (excluding the case where all are hydrogen atoms).
取代基不是特别限制的，只要稠合八环芳族化合物的发色表现了红色(R)(即只要发光波长是大约580-780nm)，和可以根据目的适当选择。 Substituent is not particularly limited, as long as the condensed eight-ring aromatic chromophoric compounds exhibit red (R & lt) (i.e., as long as the emission wavelength is about 580-780nm), and can be suitably selected according to the purpose. 优先选择例如卤素原子，羟基，氰基，烷基，烷氧基，芳基，芳氧基，芳氨基，二芳基氨基，或类似物。 For example preferred halogen atom, a hydroxyl group, a cyano group, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an arylamino group, diarylamino group, or the like.
当稠合八环芳族化合物具有这些取代基时，这些取代基的操作和效果如下所示。 When the condensed eight-ring aromatic compound has these substituents, the operation and effects of the substituents shown below.
如果取代基是卤素原子或烷基，这些取代基增加了稠合八环芳族化合物和以下所述的主体化合物的亲和力。 If a substituent is a halogen atom or an alkyl group, these substituents increase the condensed eight-ring aromatic compound and the host compound according to the following affinity.
如果取代基是羟基，氰基，烷氧基或芳氧基，这些取代基改变了稠合八环芳族化合物在更长波长的方向中的发光的颜色。 If the substituent is hydroxy, cyano, alkoxy or aryloxy group, these substituents changes the emission color of eight fused ring aromatic compound in the direction of longer wavelengths.
如果取代基是芳基，通过使稠合八环芳族化合物的平展型母核变为立体结构，所述取代基抑制了因分子间的缔合作用而引起的浓集猝灭作用(concentration quenching)。 If the group is a substituted aryl group, a fused by eight-ring aromatic compound nucleus becomes flat type three-dimensional structure, the substituents suppress the concentration quenching due to the association between molecules caused by (concentration quenching ).
如果取代基是芳氨基或二芳氨基，这些取代基改变了稠合八环芳族化合物在更长波长的方向中发光的颜色，和改进了稠合八环芳族化合物的空穴迁移能力，以及通过使稠合八环芳族化合物的平展型母核变为立体结构，抑制因分子间的缔合作用而引起浓集猝灭作用。 If the substituent group is arylamino or diarylamino groups, these substituents eight changed fused ring aromatic compound in the direction of the light emitting color of longer wavelength and improving the hole transport ability of condensed eight-ring aromatic compound, and by making a fused nucleus flat type eight-ring aromatic compound becomes three-dimensional structure, suppress the intermolecular association caused by concentration quenching.
卤素原子的实例是氟、氯、溴等。 Examples of the halogen atom are fluorine, chlorine, bromine and the like.
烷基不是特别限制的，和能够根据目的来适当选择。 Alkyl group is not particularly limited, and can be appropriately selected depending on the purpose. 适合的实例是具有1-10个碳原子的直链、支化或环烷基。 Examples of suitable straight-chain having 1 to 10 carbon atoms, branched or cyclic alkyl group. 特别适合的实例包括甲基、乙基、丙基、异丙基、丁基、异丁基、叔丁基、戊基、异戊基、己基、异己基、庚基、异庚基、辛基、异辛基、壬基、异壬基、癸基、异癸基、环戊基、环丁基、环丙基、环己基、环庚基、环辛基、环壬基、环癸基等。 Particularly suitable examples include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, isopentyl, hexyl, isohexyl, heptyl, iso-heptyl, octyl , isooctyl, nonyl, isononyl, decyl, isodecyl, cyclopentyl, cyclobutyl, cyclopropyl, cyclohexyl, cycloheptyl, cyclooctyl, nonyl, cyclodecyl group, etc. .
烷氧基通过-OR来表示(其中R表示前述烷基)。 Alkoxy group represented by -OR (wherein R represents the alkyl group). 实例包括甲氧基、乙氧基、丙氧基、异丙氧基、环丙氧基、丁氧基、异丁氧基、环丁氧基、环戊氧基、环己氧基等。 Examples include methoxy, ethoxy, propoxy, isopropoxy, cyclopropyloxy, butoxy, isobutoxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy and the like.
芳基不是特别限制的，和能够根据目的来适当选择。 An aryl group is not especially limited, and can be appropriately selected depending on the purpose. 适合实例包括单环芳族环基，通过使四个或四个以下芳族环连接在一起形成的基团，具有5个或5个以下稠合芳族环以及碳、氧、氮和硫原子的总数是30个或30以下的基团，以及其它等等。 Suitable examples include monocyclic aromatic ring groups, by four or less aromatic rings are connected together to form a group having five or fewer condensed aromatic rings and carbon, oxygen, nitrogen and sulfur atoms the total number is 30 or less groups, and other like.
单环芳族环基不是特别限制的，和能够根据目的适当选择。 Monocyclic aromatic ring group is not particularly limited, and can be appropriately selected depending on the purpose. 实例包括苯基、甲苯基、二甲苯基、枯茗基、苯乙烯基、2，4，6-三甲苯基、肉桂基、苯乙基、二苯甲基，以及其它等等。 Examples include phenyl, tolyl, xylyl, cumin, styryl, mesityl, cinnamyl, phenethyl, benzhydryl, and other like. 这些可以被取代基取代。 These may be substituted.
通过四个或四个以下芳族环连接在一起形成的基团不是特别限制的，和能够根据目的适当选择。 They joined together to form a four by four or less aromatic ring group is not particularly limited, and can be appropriately selected depending on the purpose. 实例包括萘基、蒽基、菲基、茚基、薁基、苯并蒽基等。 Examples include naphthyl, anthryl, phenanthryl, indenyl, azulenyl, anthracenyl benzo group. 它们可以被取代基取代。 They may be substituted.
具有5个或5个以下稠合芳族环和碳、氧、氮和硫原子的总数是30或30以下的基团不是特别限制的，和能够根据目的来适当选择。 Having 5 or the total number of aromatic rings and fused aromatic carbon, oxygen, nitrogen and sulfur atoms is 5 or less 30 or less 30 group is not particularly limited, and can be appropriately selected depending on the purpose. 实例包括吡咯基、呋喃基、噻吩基、吡啶基、喹啉基、异喹啉基、咪唑基、吡啶基、吡咯并吡啶基、噻唑基、嘧啶基、苯硫基、吲哚基、喹啉基、嘌呤基(pyrinyl)、腺嘌呤基等，以及可以被取代基取代。 Examples include pyrrolyl, furyl, thienyl, pyridyl, quinolyl, isoquinolyl, imidazolyl, pyridyl, pyrrolyl and pyridyl, thiazolyl, pyrimidinyl, thiophenyl, indolyl, quinolyl group, purinyl (pyrinyl), adenine group, and may be substituted.
在以上芳氧基、芳氨基和二芳氨基中的芳基与上述芳基相同。 In the above aryloxy group, arylamino group and diarylamino group in the aryl group and the aryl same.
芳氨基的适合实例是例如由下式表示的那些。 Suitable examples of the arylamino group are such as those represented by the following formula.
在式中，Ar1表示芳基。 In the formula, Ar1 represents an aryl group. 芳基的实例是上述芳基。 Examples of aryl is the above aryl group. R19表示氢原子，或具有1-10个碳原子的直链、支化或环状烷基。 R19 represents a hydrogen atom, or a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms. 这些烷基的实例是以上列举的那些。 Examples of such alkyl groups are those listed above.
二芳氨基的适合实例是由例如下式表示的那些。 Suitable examples of diarylamino are, for example, those represented by the following formula.
在式中，Ar1和Ar2可以相同或不同的，和各自表示芳基。 In the formula, Ar 1 and Ar2 may be the same or different, and each represents an aryl group. 芳基的适合实例是以上列举的芳基。 Suitable examples of aryl groups are aryl groups listed above.
稠合八环芳族化合物能够适合在有机EL元件中使用，和能够适宜地用于有机EL元件的有机薄膜层，尤其发光层或类似物。 Condensed eight-ring aromatic compound can be suitably used in the organic EL element, the organic thin film layer and the organic EL element can be suitably used, in particular the light emitting layer or the like.
优选的是，在以上结构式(1)中R1-R18的至少一个，在以上结构式(2)中R1-R16的至少一个，或在以上结构式(3)中R1-R14的至少一个选自芳基、芳氨基和二芳氨基。 Preferably, at least one of the above structural formula (1) R1-R18 in the above formula (2) at least one of R1-R16 or R1-R14 in the above formula (3) is at least one selected from aryl , arylamino and diarylamino group. 在这种情况下，稠合八环芳族化合物具有优点：它具有高红光色纯度和优异的发光效率，发光亮度等，和它能够适合地用于有机EL元件。 In this case, the condensed eight-ring aromatic compound has advantages: it has high color purity of red light and excellent light emission efficiency, emission luminance, etc., and it can be suitably used for the organic EL element.
当以上结构式(1)中R1-R18的至少一个，在以上结构式(2)中R1-R16的至少一个，或在以上结构式(3)中R1-R14的至少一个是芳基时，稠合八环芳族化合物是具有优异的电子迁移能力的芳基稠合八环芳族化合物，和能够适宜地用于有机EL元件中的电子迁移层和发光层的至少一种。 When the above formula (1) R1-R18 of at least one, in the above structural formula (2), R1-R16 of at least one, or In the above formulas (3) R1-R14 least one is an aryl group, fused eight aromatic compound is an aryl condensed eight-ring aromatic compound having excellent electron transporting ability, and at least one electron transporting layer and the light emitting layer of the organic EL element can be suitably used for.
当以上结构式(1)中R1-R18的至少一个，在以上结构式(2)中R1-R16的至少一个，或在以上结构式(3)中R1-R14的至少一个是芳氨基时，稠合八环芳族化合物是具有优异空穴(载体)迁移能力的芳氨基稠合八环芳族化合物。 When the above formula (1) R1-R18 of at least one, in the above structural formula (2), R1-R16 of at least one, or In the above formulas (3) R1-R14 of the at least one arylamino group, the condensed eight aromatic compound is an arylamino condensed eight-ring aromatic compound having excellent hole (carrier) transfer ability. 而且，当以上结构式(1)中R1-R18的至少一个，在以上结构式(2)中R1-R16的至少一个，或在以上结构式(3)中R1-R14的至少一个是二芳氨基时，稠合八环芳族化合物是具有优异的空穴(载体)迁移能力的二芳氨基稠合八环芳族化合物。 Further, when the above formula (1) at least one of R1-R18 in the above formula (2) at least one of R1-R16 is, or in the above structural formula (3) at least one of R1-R14 diarylamino amino group, condensed eight-ring aromatic compound having excellent hole (carrier) transfer ability diarylamino condensed eight-ring aromatic compound. 各自能够适合用于有机EL元件中的空穴迁移层和发光层的至少一种。 Suitable hole transport layer can be each organic EL element and the light emitting layer for at least one.
在结构式(1)中，当R1-R8和R10-R17是氢原子，R9和R18选自苯基、苯氨基和二苯氨基(即，在“结构1”的情况下)时，化合物是稳定的。 In formula (1), when R1-R8 and R10-R17 is a hydrogen atom, R9 and R18 is selected from phenyl, phenylamino and diphenylamino (i.e., in the case of "Structure 1"), the compound is stable of. 因此，稠合八环芳族化合物(二萘并芘化合物)能够适合用于有机EL元件。 Thus, aromatic condensed eight-ring aromatic compound (dinaphtho pyrene compound) can be suitably used for the organic EL element. 从表明的效果来看，R9和R18相同是优选的。 From the point of view indicated, R9 and R18 are the same are preferred.
与以上类似，在结构式(1)中，还优选的是，其中R2-R9和R11-R18是氢原子，R1和R10选自苯基、苯氨基、和二苯氨基的情况(即“结构2”的情况)，其中R1-R7、R9-R16，和R18是氢原子，R8和R17选自苯基、苯氨基、二苯氨基的情况(即“结构3”的情况)，其中R1-R6、R8-R15、和R17-R18是氢原子，和R7和R16选自苯基、苯氨基、和二苯氨基(即，“结构4”情况)的情况，以及其它等等。 Similar to the above, in the formula (1), is also preferred, wherein R2-R9 and R11-R18 is a hydrogen atom, R1, and is selected from phenyl, phenylamino, diphenylamino, and the case of R10 (i.e., "Structure 2 "case), wherein R1-R7, R9-R16, and R18 is a hydrogen atom, R8 and R17 are selected from phenyl, phenylamino, diphenylamino case (i.e.," the structure 3 "), wherein R1-R6 , where R8-R15, and R17-R18 is a hydrogen atom, and R7 and R16 is selected from phenyl, phenylamino, and diphenylamino (i.e., "configuration 4" situation), and other like.
在结构式(2)中，当R1-R6，R8-R14，和R16是氢原子及R7和R15选自苯基，苯氨基，和二苯氨基(即在“结构1”的情况)时，化合物是稳定的。 In formula (2), when R1-R6, R8-R14, and R16 are hydrogen atoms and R7 and R15 are selected from phenyl, phenylamino, and diphenylamino (i.e., in the case of "Structure 1"), the compound It is stable. 因此，该稠合八环芳族化合物(二苯并二苯并[cd，jk]芘化合物)能够适宜用于有机EL元件。 Accordingly, the condensed eight-ring aromatic compound (dibenzo-dibenzo [cd, jk] pyrene compound) can be suitably used for the organic EL element. 从表明的效果来看，优选R7和R15相同。 , R7 and preferably from the same point of view indicate the R15.
与以上类似，在结构式(2)中，还优选的是，其中R1-R5和R7-R13，和R15-R16是氢原子，R6和R14选自苯基、苯氨基、和二苯氨基的情况(即“结构2”的情况)，其中R1-R7及R9-R15是氢原子，及R8和R16选自苯基、苯氨基、二苯氨基的情况(即“结构3”的情况)，其中R2-R8和R10-R16是氢原子，及R1和R9选自苯基、苯氨基、和二苯氨基(即，“结构4”情况)的情况，以及其它等等。 Similar to above, in structural formula (2), is also preferred, wherein R1-R5 and R7-R13, and R15-R16 is a hydrogen atom, where R6 and R14 is selected from phenyl, phenylamino, diphenylamino, and the (i.e., the case of "structure 2"), wherein R1-R7 and R9-R15 is hydrogen atom, and R8 and R16 is selected from phenyl, phenylamino, diphenylamino situation (i.e. the case of "structure 3"), wherein R2-R8 and R10-R16 is a hydrogen atom, and R1 and R9 is selected from phenyl, phenylamino, and diphenylamino (i.e., "configuration 4" case), the other, and the like.
在结构式(3)中，当R1-R5，R7-R12，和R14是氢原子，以及R6和R13选自苯基、苯氨基和二苯氨基(即，在“结构1”的情况)时，该化合物是稳定的。 In the formula (3), when (in the case of "Structure 1", i.e.,) when R1-R5, R7-R12, and R14 are hydrogen atoms, and R6 and R13 is selected from phenyl, phenylamino and diphenylamino, this compound is stable. 因此，该稠合八环芳族化合物(并四苯基并四苯)能够适用于有机EL元件。 Accordingly, the condensed eight-ring aromatic compound (and tetraphenyl naphthacene) applicable to the organic EL element. 从表明的效果来看，优选R6和R13是相同的。 From the point of view indicated, R6 and R13 are preferably the same.
与以上类似，在结构式(3)中，还优选的是，其中R1-R4、R6-R11，和R13-R14是氢原子，以及R5和R12选自苯基、苯氨基和二苯氨基的情况(即，“结构2”的情况)，其中R1-R6和R8-R13是氢原子，以及R7和R14选自苯基、苯氨基和二苯氨基的情况(即，“结构3”的情况)，其中R2-R7和R9-R14是氢原子，以及R1-R8选自苯基、苯氨基和二苯氨基的情况(即，“结构4”的情况)，以及其它等等。 Similar to above, in structural formula (3), is also preferred, wherein R1-R4, R6-R11, and R13-R14 is a hydrogen atom, and R5 and R12 is selected from phenyl, phenylamino and diphenylamino case of (i.e., "configuration 2"), wherein R1-R6 and R8-R13 are hydrogen atoms, and R7 and R14 is selected from phenyl, phenylamino and diphenylamino case (i.e., "structure 3") wherein R2-R7 and R9-R14 is hydrogen atom, and R1-R8 is selected from phenyl, phenylamino and diphenylamino case (i.e., "configuration 4" situation), and other like.
在结构式(1)-(3)中，如果取代基的类型和数目是相同的，因取代基的位置不同而产生的吸收峰波长的不同一般是小的。 In formula (1) - In (3), if the type and number of the substituents is the same, different absorption peak wavelength due to the general position of the substituent is generated by the difference is small. 例如，当吸收峰位置使用由Fujitsu Ltd.生产的分子轨道计算程序系统(WinMOPACV3.0)通过分子轨道计算来分析时，在结构式(1)的结构1-4中的其中两个取代基是苯基的二苯基萘并芘化合物的情况下，结构1的二苯基萘并芘化合物的吸收峰波长是508nm，结构2的二苯基萘并芘化合物的吸收峰波长是503nm，结构3的二苯基萘并芘化合物的吸收峰波长是498nm，和结构4的二苯基萘并芘化合物的吸收峰波长是492nm。 For example, when the absorption at the program using the molecular orbital calculation system (WinMOPACV3.0) manufactured by the Fujitsu Ltd. when analyzed by molecular orbital calculation, in the structure of formula 1-4 (1) in which two substituents are phenyl the naphthyl group and diphenyl compounds where pyrene, naphthalene-1-diphenyl absorption peak wavelength is 508nm and a pyrene compound, 2-diphenyl naphthalene and pyrene compounds absorption peak wavelength is 503nm, the structures 3 absorption peak wavelength of diphenyl compounds are naphthalene and pyrene 498nm, and a naphthalene structure and diphenyl 4 pyrene compounds absorption peak wavelength is 492nm. 此外，在结构式(2)中的结构1-4中，其中两个取代基是苯基的二苯基二苯并二苯并[cd，jk]芘化合物的情况下，结构1的二苯基二苯并二苯并[cd，jk]芘化合物的吸收峰波长是534nm，结构2的二苯基二苯并二苯并[cd，jk]芘的吸收峰波长是522nm，结构3的二苯基二苯并二苯并[cd，jk]芘化合物的吸收峰波长是533nm，和结构4的二苯基二苯并二苯并[cd，jk]芘的吸收峰波长是521nm。 Further, in the structure of formula (2) 1-4, wherein the two substituents are phenyl diphenyl-dibenzo dibenzo [cd, jk] pyrene in the case of the compound, 1-diphenyl dibenzo dibenzo [cd, jk] pyrene compounds absorption peak wavelength is 534nm, the structure and diphenyl 2-dibenzo dibenzo [cd, jk] pyrene absorption peak wavelength is 522nm, the structure of diphenyl 3 dibenzo yl-dibenzo [cd, jk] pyrene compounds absorption peak wavelength is 533nm, and the structure of diphenyl and diphenyl 4-dibenzo [cd, jk] pyrene absorption peak wavelength is 521nm.
本发明的稠合八环芳族化合物能够适用于各种领域，和特别适用于将在以下描述的本发明的有机EL元件和有机EL显示器。 Eight of the present invention fused ring aromatic compound can be applied to various fields, and is particularly suitable for the organic EL element of the present invention described below and an organic EL display.
本发明的有机EL元件包括在正极和负极之间包括发光层的有机薄膜层，和该有机薄膜层含有稠合八环芳族化合物，其中稠合八环芳族化合物包括在14、16和18的任一个中具有许多能够引入取代基的区域，和具有点对称骨架的结构。 The organic EL element of the present invention is comprised between positive and negative electrodes comprises an organic thin film light-emitting layer, and the organic thin film layer contains a condensed eight-ring aromatic compound, wherein the condensed eight-ring aromatic compound comprises at 14,16 and 18 having any one of a number of substituents can be introduced in the region, and having a point-symmetrical skeleton structure.
稠合八环芳族化合物的适合实例是由以下结构式(1)-(3)的任一个表示的那些。 Suitable examples of condensed eight-ring aromatic compound is represented by the following structural formula (1) - any of those (3) of a representation. 由结构式(1)表示的稠合八环芳族化合物是二萘并芘化合物。 Condensed eight-ring aromatic compound represented by the formula (1) is a dinaphtho pyrene compound. 由结构式(2)表示的稠合八环芳族化合物是二苯并二苯并[cd，jk]芘化合物。 Condensed eight-ring aromatic compound represented by the formula (2) is dibenzo dibenzo [cd, jk] pyrene compound. 由结构式(3)表示的稠合八环芳族化合物是并四苯基并四苯化合物。 Condensed eight-ring aromatic compound represented by the formula (3) and tetraphenyl naphthacene compound.
结构式(1) Of formula (1) 在结构式(1)中，R1-R18可以彼此相同或不相同，和表示氢原子或取代基。 In formula (1), R1-R18 may be the same or different, and represent a hydrogen atom or a substituent. 取代基的实例是以上列举的那些。 Examples of substituents are those listed above.
结构式(2) Structural formula (2) 在结构式(2)，R1-R16可以彼此相同或不同，和表示氢原子或取代基。 In formula (2), R1-R16 may be the same or different, and represent a hydrogen atom or a substituent. 取代基的实例是以上列举的那些结构式(3) Examples of the substituent are those enumerated above structural formula (3) 在结构式(3)中，R1-R14可以彼此相同或不同，和表示氢原子或取代基。 In the formula (3), R1-R14 may be the same or different, and represent a hydrogen atom or a substituent. 取代基的实例是以上列举的那些。 Examples of substituents are those listed above.
稠合八环芳族化合物在有机薄膜层中含有，优选在有机薄膜层中的电子迁移层、空穴迁移层和发光层的至少一层中含有，更优选在发光层中含有，以及特别优选在电子迁移层中含有或者在发光层和电子迁移层中含有，或者在空穴迁移层中含有或在发光层和空穴迁移层中含有。 Condensed eight-ring aromatic compound contained in the organic thin film layer, the electron transport layer is preferably an organic thin film layer, a hole transport layer and light emitting layer contains at least one, and more preferably the light emitting layer, and particularly preferably contained in the electron transport layer or the light emitting layer and contains an electron transport layer, or contained in or contains a light-emitting layer and a hole transport layer, the hole transport layer.
当稠合八环芳族化合物在发光层和电子迁移层中含有或在发光层和空穴迁移层中含有时，发光层和电子迁移层，或者发光层和空穴迁移层可以是独立的层，或者可以作为单一层提供，即发光和电子迁移层，或发光和空穴迁移层。 When the condensed eight-ring aromatic compound contained in the light emitting layer, or contains a hole transport layer and the light-emitting layer and an electron transport layer, a luminescent layer and an electron transport layer, or a light emitting layer and the hole transport layer may be a separate layer , or it may be provided as a single layer, i.e., a light emitting and electron transport layer, and a hole transport layer or light emitting.
作为结构式(1)中的在发光层中含有的稠合八环芳族化合物，优选的是，R1-R18的至少一个选自芳基，芳氨基和二芳氨基。 As the structural formula (1) contained in the thick light-emitting layer bonded eight-ring aromatic compound, preferably, R1-R18 is selected from at least one aryl group, an arylamino group and diarylamino group. 更优选的是，R1-R8和R10-R17是氢原子，以及R9和R18选自苯基、苯氨基和二苯氨基。 And more preferably, R1-R8 and R10-R17 is a hydrogen atom, and R9 and R18 is selected from phenyl, phenylamino, and diphenylamino. 特别优选是，R9和R18是相同的。 Particularly preferably, R9 and R18 are the same.
在结构式(2)中，优选的是，R1-R16的至少一个选自芳基、芳氨基和二芳氨基。 In formula (2), preferably, R1-R16 is selected from at least one aryl group, an arylamino group and diarylamino group. 更优选的是，R1-R6、R8-R14和R16是氢原子，以及R7和R15选自苯基、苯氨基和二苯氨基。 And more preferably, R1-R6, R8-R14 and R16 is a hydrogen atom, and R7 and R15 is selected from phenyl, phenylamino, and diphenylamino. 尤其优选的是，R7和R15是相同的。 Especially preferred are, R7 and R15 are the same.
在结构式(3)中，优选的是，R1-R14的至少一个选自芳基、芳氨基和二芳氨基。 In formula (3), preferably, R1-R14 is selected from at least one aryl group, an arylamino group and diarylamino group. 更优选的是，R1-R5、R7-R12和R14是氢原子，以及R6和R13选自苯基、苯氨基和二苯氨基。 And more preferably, R1-R5, R7-R12 and R14 are hydrogen atoms, and R6 and R13 is selected from phenyl, phenylamino, and diphenylamino. 尤其优选的是，R6和R13是相同的。 Especially preferred are, R6 and R13 are the same.
在上述优选例子的这些情况下，就其具有高红光色纯度和优异的发光效率，发光亮度等而言，有机EL元件是理想的。 In these cases the above-described preferred example, it has a high color purity of red light and excellent light emission efficiency, emission luminance and the like, the organic EL element is desirable. 在上述更优选的例子和特别优选的例子中，稠合八环芳族化合物是稳定的，因此，有机EL元件因其具有优异的耐久性而言是理想的。 In a particularly preferred examples and more preferred examples described above, the condensed eight-ring aromatic compound is stable, and therefore, the organic EL element because of its excellent durability is ideal.
作为芳氨基，由上式表示的那些是优选的。 As the arylamino group, those represented by the above formula are preferable. 作为二芳氨基，由上式表示的那些是优选的。 As the diarylamino group, those represented by the above formula are preferable.
在电子迁移层中含有的，或者在电子迁移层和发光层中含有的的结构式(1)中的稠合八环芳族化合物中，优选的是，R1-R18的至少一个是芳基。 Contained in the electron transport layer, or a structural formula condensed eight-ring aromatic compounds, (1) is contained in the electron transport layer and the light emitting layer is, R1-R18 of at least one aromatic group. 更优选的是，R1-R8和R10-R17是氢原子以及R9和R18是苯基。 And more preferably, R1-R8 and R10-R17 are hydrogen atom and R9 and R18 are phenyl. 尤其优选的是，R9和R18是相同的。 Especially preferred are, R9 and R18 are the same.
在结构式(2)中，优选，R1-R16的至少一个是芳基。 In formula (2), preferably, R1-R16 is at least one aryl group. 更优选，R1-R6、R8-R14和R16是氢原子，以及R7和R15是苯基。 More preferably, R1-R6, R8-R14 and R16 is a hydrogen atom, and R7 and R15 is phenyl. 尤其优选R7和R15是相同的。 R7 and R15 are particularly preferably identical.
在结构式(3)中，优选，R1-R14的至少一个是芳基。 In formula (3), preferably, R1-R14 is at least one aryl group. 更优选，R1-R5，R7-R12和R14是氢原子，以及R6和R13是苯基。 More preferably, R1-R5, R7-R12 and R14 are hydrogen atoms, and R6 and R13 is phenyl. 特别优选，R6和R13是相同的。 Particularly preferably, R6 and R13 are the same.
在这些情况，在上述优选例子中，稠合八环芳族化合物是具有优异电子迁移能力的芳基稠合八环芳族化合物。 In these cases, in the above preferred example, a condensed eight-ring aromatic compound is an aryl condensed eight-ring aromatic compound having excellent electron transporting ability. 该有机EL元件就其具有高红光色纯度和优异的发光效率，发光亮度等而论是理想的。 The organic EL element on which the red light having high color purity and excellent in emission efficiency, emission luminance and other terms is desirable. 在上述更优选的例子和特别优选的例子中，稠合八环芳族化合物是稳定的，因此该有机EL元件就其具有优异的耐久性而言是理想的。 In a particularly preferred examples and more preferred examples described above, the condensed eight-ring aromatic compound is stable, so that the organic EL element having excellent durability on is ideal.
在空穴迁移层中含有的，或者在空穴迁移层和发光层中含有的结构式(1)中的稠合八环芳族化合物中，优选，R1-R18的至少一个是芳氨基和二芳氨基。 Contained in the hole transport layer, or a structural formula condensed eight-ring aromatic compound (1) is contained in the hole transport layer and light emitting layer, preferably, R1-R18 is an aryl of at least one amino group and two aromatic amino. 更优选，R1-R8和R10-R17是氢原子，以及R9和R18是苯氨基或二苯氨基。 More preferably, R1-R8 and R10-R17 is a hydrogen atom, and R9 and R18 are phenylamino or diphenylamino group. 特别优选的是，R9和R18是相同的。 Particularly preferred are, R9 and R18 are the same.
在结构式(2)中，优选，R1-R16的至少一个选自芳氨基和二芳氨基。 In formula (2), preferably, R1-R16 is selected from at least one aromatic amino group and diarylamino group. 更优选，R1-R6、R8-R14和R16是氢原子，以及R7和R15是苯氨基或二苯氨基。 More preferably, R1-R6, R8-R14 and R16 is a hydrogen atom, and R7 and R15 are phenylamino or diphenylamino group. 特别优选的，R7和R16是相同的。 Especially preferred, R7 and R16 are the same.
在结构式(3)中，优选，R1-R14的至少一个选自芳氨基和二芳氨基。 In formula (3), preferably, R1-R14 is selected from at least one aromatic amino group and diarylamino group. 更优选，R1-R5、R7-R12和R14是氢原子，以及R6和R13是苯氨基或二苯氨基。 More preferably, R1-R5, R7-R12 and R14 are hydrogen atoms, and R6 and R13 are phenylamino or diphenylamino group. 特别优选，R6和R13是相同的。 Particularly preferably, R6 and R13 are the same.
在这些情况下，在上述优选例子中，稠合八环芳族化合物是具有优异空穴(载体)迁移能力的芳氨基稠合八环芳族化合物或二芳氨基稠合八环芳族化合物。 In these cases, in the above preferred example, a condensed eight-ring aromatic compound having excellent hole (carrier) eight-ring aromatic compound or a diarylamino condensed eight-ring aromatic compound fused aromatic amino migration ability. 该有机EL元件就其具有高红光色纯度和优异发光效率，发光亮度等而论是理想的。 The organic EL element on which the red light having high color purity and excellent in emission efficiency, emission luminance and other terms is desirable. 在上述更优选的例子和特别优选的例子中，稠合八环芳族化合物是稳定的，和因此，该有机EL元件就其具有优异的耐久性而言是理想的。 In a particularly preferred examples and more preferred examples described above, the condensed eight-ring aromatic compound is stable, and therefore, the organic EL element having excellent durability on is ideal.
优选的是，发光层除了稠合八环芳族化合物以外含有主体化合物。 Preferably, the light emitting layer in addition to the condensed eight-ring aromatic compound contains a host compound.
主体化合物优选是其发光波长是在稠合八环芳族化合物的光吸收波长的附近的化合物。 Host compound is preferably a compound whose emission wavelength is in the vicinity of the eight-ring aromatic compound light absorption wavelength fused. 在这些当中，因为稠合八环芳族化合物的光吸收波长是500-650nm所以，其光吸收波长是在稠合八环芳族化合物的较短波长侧和其发光波长是在稠合八环芳族化合物的光吸收波长的附近的化合物是优选的。 Among these, since the light condensed eight-ring aromatic compound is an absorption wavelength of 500-650nm so that the light absorption wavelength is at the shorter wavelength side and the emission wavelength of eight fused ring aromatic compound are condensed eight-ring in aromatic compound near the light absorption wavelength of the compound is preferred. 具体说，由以下结构式表示的铝喹啉配合物(Alq)(主发光波长＝530nm)，由以下结构式表示的9，9'-双蒽基(主发光波长＝460nm)，由以下结构式表示的4，4'-双(9-咔唑基)-联苯(CBP)(主发光波长＝380nm)，由以下结构式表示的4，4'-双(2，2'-二苯基乙烯基)-1，1'-联苯(DPVBi)(主发光波长＝470nm)，由以下结构式表示的对-联六苯(主发光波长＝400nm)，由以下结构式表示的1，3，6，8-四苯基芘(主发光波长＝440nm)，由以下结构式表示的N，N'-二萘基-N，N'-二苯基-[1，1'-联苯基]-4，4'-二胺(NPD)(主发光波长＝430nm)，以及其它等等是优选的。 Specifically, the aluminum quinoline complex (of Alq) (main emission wavelength = 530nm) represented by the following structural formula, 9,9'-bis anthracenyl group (main emission wavelength = 460nm) represented by the following structural formula represented by the following structural formula 4,4'-bis (9-carbazolyl) - biphenyl (the CBP) (main emission wavelength = 380nm), 4,4'- bis (2,2'-diphenyl vinyl) represented by the following structural formula 1,3,6,8-benzene-linked six (main emission wavelength = 400nm), represented by the following structural formula - 1,1'-biphenyl (DPVBi) (main emission wavelength = 470nm), representing by the following structural formula tetraphenyl pyrene (main emission wavelength = 440nm), N is represented by the following structural formula, N'- dinaphthyl -N, N'- diphenyl - [1,1'-biphenyl] -4,4 ' - diamine (the NPD) (main emission wavelength = 430nm), and other like are preferable. 铝喹啉配合物(Alq)是特别优选的。 Aluminum quinoline complex (of Alq) is particularly preferred.
铝喹啉配合物(Alq) Aluminum quinoline complex (of Alq) 9，9'-双蒽基 9,9'-bis anthracenyl
对-联六苯 On - with hexacene
1，3，6，8-四苯基芘 1,3,6,8-tetraphenyl pyrene 主体化合物，如铝喹啉配合物(Alq)或类似物可以具有取代基，该取代基在其中主体化合物的发光波长在稠合八环芳族化合物的吸收波长上的重叠没有消除的范围内适当选择。 The host compound, such as aluminum quinoline complex (of Alq) or the like may have a substituent group, the substituent in the range where the emission wavelength of the host compound on the absorption wavelength overlap condensed eight-ring aromatic compound is not eliminated appropriately select. 例如，在铝喹啉配合物(Alq)的情况下，能够适宜使用由以下结构式表示的甲基取代物或类似物。 For example, in the case of aluminum quinoline complex (of Alq) can be used appropriately substituted methyl or the like represented by the following formula.
当发光层含有主体化合物时，能够选择具有优异成膜能力的物质作为主体化合物。 When the light emitting layer contains a host compound, it is possible to select a substance having an excellent film-forming ability as a host compound. 因此，优点是发光层能够具有优异的成膜能力，不论稠合八环芳族化合物本身的成膜能力如何。 Thus, the advantage of a light-emitting layer can have an excellent film-forming ability, film forming ability regardless of how eight fused ring aromatic compound itself. 此外，在发光层中，当在其中从正极注射的空穴和从负极注射的电子重组的重组部位是主体化合物时，首先，主体化合物被激发。 Further, the light emitting layer, when the compound in which the body is a hole injection from the positive electrode from the negative electrode and the recombination region of the injected electron recombination, first, the host compound is excited. 然后，在其中主体化合物的发光波长和客体化合物(稠合八环芳族化合物)的吸收波长重叠的情况下，激发能量有效地从主体化合物转移到客体化合物(稠合八环芳族化合物)。 Then, in the case where the emission wavelength and the object compound subject compound (condensed eight-ring aromatic compound) absorption wavelength overlap, the excitation energy is efficiently transferred from the host compound to the guest compound (condensed eight-ring aromatic compound). 主体化合物返回到基态而没有发光，和仅有迁移到激发状态的客体化合物(稠合八环芳族化合物)释放作为红光的激发能。 The host compound returns to the ground state without emission, and only move to the excited state of the guest compound (the condensed eight-ring aromatic compound co) releases the excitation energy as red light. 因此，有利在于获得了高色纯度的红光的发射，以及发光效率、发光亮度等是优异的。 Thus, it is advantageous that the obtained red light emission with high color purity, light emission efficiency, emission luminance and the like are excellent. 一般，当发光分子单独存在或以高密度存在于薄层中时，产生了称之为“浓集猝灭作用”的在发光分子之间的相互作用，它是由分子彼此之间的较近接触引起的发光效率降低现象。 In general, when the light emitting molecules exist alone or in high density in the presence of thin layers, generates interactions called "concentration quenching" between the light emitting molecules, which are close to each other between the molecules luminous efficiency decreases due to the phenomenon of the contact. 然而，在上述发光层中，稠合八环芳族化合物是以相对低的浓度分散在主体化合物中，有效地抑制了前述“浓集抑制作用”，和发光效率是优异的。 However, in the light emitting layer, the condensed eight-ring aromatic compound is dispersed in a relatively low concentration in the host compound, effectively inhibited the "inhibitory concentration", and is excellent in luminous efficiency.
发光层可以含有n种的主体化合物(其中n表示1或1以上的整数)。 The light emitting layer may contain n types of host compounds (wherein n represents an integer of 1 or more). 在这种情况下，如果n种的主体化合物是第一种主体化合物，第二种主体化合物，…，第(n-1)种主体化合物，和依次来自具有最短发光波长的主体化合物的第n种主体化合物，优选的是，第一种主体化合物的发光波长是在第二种主体化合物的光吸收波长的附近，第二种主体化合物的发光波长是在第三种主体化合物的光吸收波长的附近，…，第(n-1)种主体化合物的发光波长是在第n种主体化合物的光吸收波长的附近，和第n种主体化合物的发光波长是在稠合八环芳族化合物的光吸收波长的附近。 In this case, if the n types of host compounds are a first host compound, a second host compound, ..., the (n-1) types of host compound, and the n-th order from the host compound with the shortest emission wavelength species host compound, it is preferable that the emission wavelength of the first host compound is in a second body of light near the absorption wavelength of the compound, emission wavelength of the second host compound is in a third host compound of the light absorption wavelength nearby, and the n th emission wavelength of the host compound in the vicinity of, ..., the (n-1) emission wavelength species host compound in the light of the n types of host compounds absorption wavelength light in the condensed eight-ring aromatic compound absorption wavelength in the vicinity.
在主体化合物中，铝喹啉配合物(Alq)(主发光波长＝530nm)和红荧烯(主光吸收波长＝530nm；主发光波长＝560nm)等的结合物是优选的。 In the host compound, the aluminum quinoline complex (of Alq) (main emission wavelength = 530nm) and rubrene (main light absorption wavelength = 530nm; main emission wavelength = 560nm) binding the like are preferred. 稠合八环芳族化合物的光吸收波长是500-650nm。 Light condensed eight-ring aromatic compound absorption wavelength is 500-650nm. 因此，属于铝喹啉配合物(Alq)(其主发光波长是530nm)，和红荧烯(其主光吸收波长是530nm和其主发光波长是560nm，和用以下结构式来表示)的两种主体化合物的结合物(结合使用)是更优选的。 Thus, part of the aluminum quinoline complex (of Alq) (main emission wavelength 530nm), and rubrene (main light absorption wavelength is 530nm and main emission wavelength of 560 nm, and represented by the following structural formula) Two conjugate compound body (combination) is more preferable. 在这种情况下，因为主体化合物的数目是2(即，当n＝2时)，第一种主体化合物是铝喹啉配合物(Alq)，和第二种主体化合物是红荧烯，激发能有效从铝喹啉配合物(Alq)迁移至红荧烯，和从红荧烯迁移至稠合八环芳族化合物，铝喹啉配合物(Alq)和红荧烯几乎不发光，能够获得高色纯度的红光。 In this case, since the number of host compound is 2 (i.e., when n = 2), the first host compound is aluminum quinoline complex (of Alq), and a second host compound is rubrene, the excitation effective migration from the aluminum quinoline complex (of Alq) to the rubrene, and rubrene migrate to the condensed eight-ring aromatic compound, the aluminum quinoline complex (of Alq) from and rubrene hardly emit light, can be obtained high color purity of red light.
应该注意，n种主体化合物如铝喹啉配合物(Alq)，红荧烯等可以具有取代基，这些取代基可以在不降低稠合八环芳族化合物的发光效率，发光亮度等的范围内适当选择。 It should be noted, n-kinds of host compounds such as aluminum quinoline complex (of Alq), rubrene may have a substituent, these substituents may be within the range without reducing the fused emission efficiency eight-ring aromatic compound, emission luminance, etc. appropriate choice. 例如，在红荧烯的情况下，取代基的适合实例是用以下结构式表示的那些，或类似物。 For example, in the case of rubrene, suitable examples of the substituent are those represented by the following or similar structural formulas.
在该结构式中，R表示取代基。 In the formula, R represents a substituent group. 取代基的实例是甲基，叔丁基，苯基，等等。 Examples of substituents are methyl, t-butyl, phenyl, and the like.
当发光层含有n种的主体化合物时，能够选择具有优异成膜能力的物质作为第一种主体化合物-第n种主体化合物。 When the light emitting layer contains n types of host compounds, capable of selecting a substance having an excellent film-forming ability as a first host compound - n th host compound. 因此，优点是发光层能够具有优异的成膜能力，不论稠合八环芳族化合物本身的成膜能力如何。 Thus, the advantage of a light-emitting layer can have an excellent film-forming ability, film forming ability regardless of how eight fused ring aromatic compound itself. 此外，在发光层中，当在其中从正极注射的空穴和从负极注射的电子重组(recombine)的重组部位是第k种主体化合物时，首先，第k种主体化合物被激发。 Further, the light emitting layer, when the recombination site from which the positive holes injected from the electron and recombinant (recombine) is injected when the negative k-th host compound, first, the k-th host compound is excited. 然后，在其中第k种主体化合物的发光波长和第(k+1)种主体化合物的吸收波长重叠，和第(k+1)种主体化合物的发光波长和第(k+2)种主体化合物的吸收波长重叠…，和第n种主体化合物的发光波长和客体化合物(稠合八环芳族化合物)的吸收波长重叠的情况下，激发能有效从主体化合物迁移至客体化合物(稠合八环芳族化合物)。 Then, the absorption wavelength of the emission wavelength wherein the k-th host compound and the (k + 1) kinds of the host compound overlap, and the (k + 1) emission wavelength kinds of the host compound and the (k + 2) kinds of the host compound a case where the absorption wavelength overlap absorption overlapping wavelength ..., and n th emission wavelength and the object compound subject compound (condensed eight-ring aromatic compound), the excitation energy effectively migrate from the host compound to the guest compound (condensed eight-ring aromatics). 主体化合物返回到基态而没有发光，和仅有已迁移至激发态的客体化合物(稠合八环芳族化合物)释放作为红光的激发能。 The host compound returns to the ground state without emission, and only have migrated to the excited state of the guest compound (the condensed eight-ring aromatic compound co) releases the excitation energy as red light. 因此，优点在于获得了高色纯度的红光的发射，和发光效率、发光亮度等是优异的。 Thus, an advantage is obtained that the red light emission with high color purity, light emission efficiency and light emission brightness are excellent. 此外，在发光层，稠合八环芳族化合物以相对低浓度分散在第一种主体化合物-第n种主体化合物中，前述“浓集猝灭作用”被有效抑制，和发光效率是优异的。 Further, the light emitting layer, a condensed eight-ring aromatic compound is dispersed in a relatively low concentration of a first host compound - n th host compound, the aforementioned "concentration quenching" is effectively suppressed, and luminous efficiency are excellent .
在发光层中含有的主体化合物的量通常是大约4mol或4mol以上，其中10mol或10mol以上是优选的，50mol或50mol以上是更优选的，相对于1mol的稠合八环芳族化合物。 Amount of the host compound contained in the light-emitting layer is generally about 4mol or more 4mol, 10mol wherein 10mol or more is preferable, 50 mol or more is more preferable 50 mol, 1 mol of the condensed eight-ring aromatic compound with respect.
当在发光层中含有的主体化合物的量是大约50mol％或50mol％以上时，能够发现稠合八环芳族化合物的发光效率、发光亮度等的改进。 When the above amount of the host compound contained in the light emitting layer is 50mol% to about 50mol%, or, can be found to improve the emission efficiency of the eight-ring aromatic compound, a fused emission luminance and the like. 在优选的范围中，改进是充分的，和在前述更优选的范围中，改进是显著的。 In a preferred range, the improvement is sufficient, and in the aforementioned more preferable range, the improvement is significant.
当具有n种主体化合物时，在该n种主体化合物中和优选在两种主体化合物中，具有在稠合八环芳族化合物的吸收波长的附近的发光波长的主体化合物在发光层中的含量是优选大约0.5mol或0.5mol以上，和更优选1mol或1mol以上，和特别优选3mol或3mol以上，相对于1mol的稠合八环芳族化合物。 When n types of host compound having, in the n types of host compound, and preferably in both the host compound, the content of the host compound having an emission wavelength near the absorption wavelength of the condensed eight-ring aromatic compound in the light emitting layer is preferably about 0.5mol 0.5mol or more, and more preferably 1mol 1mol or more, and particularly preferably 3mol 3mol or more, with respect to 1mol condensed eight-ring aromatic compound.
当主体化合物在发光层中的含量是大约0.5mol％或0.5mol％以上时，能够发现稠合八环芳族化合物的发光效率、发光亮度等的改进。 When the above content of the host compound in the light emitting layer was 0.5mol% to about 0.5mol%, or, to improve the light emission efficiency can be found eight-ring aromatic compound, a fused emission luminance and the like. 在优选的范围，改进是充分的，和在前述更优选的范围，改进是显著的。 In a preferred range, the improvement is sufficient, and in the aforementioned more preferable range, the improvement is significant.
在施加电场时，在本发明有机EL元件中的发光层能够从正极注射空穴，空穴注射层、空穴迁移层或类似物能够从负极注射电子，电子注射层、电子迁移层或类似物提供了空穴和电子重组的部位。 When an electric field is applied, the light emitting layer in the organic EL device of the present invention is capable of injecting holes from the positive electrode, a hole injection layer, a hole transport layer, or the like can be injected from the negative electron, the electron injection layer, an electron transport layer, or the like providing the site of recombination of holes and electrons. 这足以让发光层具有使发射红光的稠合八环芳族化合物(发光分子)由于在重组时产生的重组能而发光的功能。 This is enough since the light-emitting layer having recombinantly produced during the recombination function of emitting light can make eight fused ring aromatic compound (light-emitting molecules) emits red light. 除了稠合八环芳族化合物以外，发光层可以含有其它发光材料，只要前述红光的发射不降低。 In addition to a fused ring aromatic compound other than eight, a light-emitting layer may contain another luminescent material, as long as the red light emission is not reduced.
其它发光材料的适合实例是发射红光的材料。 Examples of other suitable light-emitting material is a material that emits red light. 实例包括在JP-ANo.9-272863中公开的硝基苯并噻唑偶氮化合物，在JP-A No.9-272864和JP-A No.10-158639中公开的铕配合物，以及其它等等。 Examples include benzothiazole azo compounds disclosed in JP-ANo.9-272863 nitrobenzene in JP-A No.9-272864 and JP-A No.10-158639 disclosed europium complexes, and other like Wait.
其它发光材料可以在与稠合八环芳族化合物的同一层中含有，或者可以在不同的层中含有。 Other luminescent materials may be contained in the same layer with the condensed eight-ring aromatic compound, or may contain different layers. 在后一情况下，发光层具有多层结构。 In the latter case, the light emitting layer has a multilayer structure.
发光层能够根据已知方法来形成。 The light emitting layer can be formed according to known methods. 例如，发光层能够适宜通过汽相淀积法，湿型成膜法，MBE(分子束取向生长)法，簇离子束法，分子积聚法，LB法，打印法，转移法或类似方法来形成。 For example, the light emitting layer can be suitably, the MBE (molecular beam epitaxy) method, cluster ion beam method, a molecular accumulation, LB technique, printing method, transfer method or the like is formed by vapor deposition method, a wet-type film forming method .
在这些当中，从不使用有机溶剂和不出现废液处理问题，以及汽相淀积法是廉价和容易的，和能够进行有效生产的观点来看，汽相淀积法是优选的。 Among these, the organic solvent is never used and waste handling problems does not occur, and a vapor deposition method is inexpensive and easy, and efficient production can be performed in view of a vapor deposition method is preferred. 然而，在其中有机薄膜层被设计成单层结构的情况下，例如，在其中有机薄膜层作为空穴迁移和发光和电子迁移层形成的情况下，湿型成膜法是优选的。 However, in the case where the organic thin film layer is designed as a single-layer structure, for example, in the case where a hole transport organic thin film layer and the light emitting and electron transport layer formed, a wet-type film forming method is preferable.
汽相淀积法不是特别限制的，并能够根据目的从已知汽相淀积法中适当选择。 Vapor deposition method is not particularly limited, and can be selected from known vapor deposition method appropriately depending on the purpose. 实例包括真空汽相淀积法，低阻加热汽相淀积法，化学汽相淀积法，物理汽相淀积法等。 Examples include a vacuum vapor deposition method, a low resistance heating vapor deposition method, chemical vapor deposition, physical vapor deposition method or the like. 化学汽相淀积法的实例是等离子CVD法，激光CVD法，热CVD法，气体来源CVD法等。 Examples of chemical vapor deposition is a plasma CVD method, laser CVD method, thermal CVD method, gas source CVD method or the like. 发光层用汽相淀积法的形成能够适宜通过例如稠合八环芳族化合物的真空汽相淀积来进行，和在其中发光层含有除了稠合八环芳族化合物以外的主体化合物的情况下，通过用真空汽相淀积来同时沉积稠合八环芳族化合物和主体化合物。 A light emitting layer was formed vapor deposition such as vacuum vapor can be suitably condensed eight-ring aromatic compound is carried out by deposition, and the case where the light emitting layer contains a host compound in addition to other than the condensed eight-ring aromatic compound next, by vacuum vapor deposition with simultaneous deposition of condensed eight-ring aromatic compound and the host compound.
湿型成膜法不是特别限制的，和能够根据目的从已知的湿型成膜法中适当选择。 Wet-type film forming method is not especially limited, and can be selected from known wet-type film forming method appropriately depending on the purpose. 实例包括喷墨法，旋转涂敷法，捏合涂敷法，棒涂法，刮涂法，流延法，浸渍法，幕涂法等。 Examples include an ink jet method, a spin coating method, kneader coating method, bar coating method, blade coating method, a casting method, a dipping method, a curtain coating method.
在湿型成膜法的情况下，能够使用(施涂或类似方式应用)其中发光层的物质与树脂组分一起被溶解或分散的溶液。 In the case of wet-type film forming method, it is possible to use (applying the application or the like) with the resin component wherein the light emitting material layer is dispersed or dissolved together in solution. 树脂组分的实例包括聚乙烯基咔唑，聚碳酸酯，聚氯乙烯，聚苯乙烯，聚甲基丙烯酸甲酯，聚酯，聚砜，聚苯醚，聚丁二烯，烃树脂，酮树脂，苯氧基树脂，聚酰胺，乙基纤维素，乙酸乙烯酯，ABS树脂，聚氨酯，蜜胺树脂，不饱和聚酯树脂，醇酸树脂，环氧树脂，硅酮树脂等。 Examples of the resin component include polyvinyl carbazole, polycarbonate, polyvinyl chloride, polystyrene, polymethyl methacrylate, polyester, polysulfone, polyphenylene oxide, polybutadiene, hydrocarbon resin, ketone resin, phenoxy resin, polyamide, ethylcellulose, vinyl acetate, ABS resin, polyurethane, melamine resin, unsaturated polyester resin, alkyd resin, epoxy resin, silicone resin or the like.
发光层用湿型成膜法的形成可以适宜地例如通过使用(施涂和干燥)其中稠合八环芳族化合物和树脂材料(根据需要使用)溶解在溶剂中的溶液(涂敷液)来进行，或者在其中发光层含有除了稠合八环芳族化合物以外的主体化合物的情况下，通过使用(施涂和干燥)其中稠合八环芳族化合物，主体化合物和树脂材料(根据需要使用)溶解在溶剂中的溶液(涂敷液)来进行。 Light emitting layer form a wet film-forming method may suitably be, for example, by using (applying and drying) wherein the condensed eight-ring aromatic compound and the resin material (used as necessary) is dissolved in a solvent (coating solution) to carried out, or in which the eight-ring wherein the fused aromatic compound, a host compound and the resin material in addition to the case where the light emitting layer contains a host compound other than the condensed eight-ring aromatic compound, by using (applying and drying) (according to need ) was dissolved in a solvent to a solution (coating liquid).
发光层的厚度优选是1-50nm，和更优选3-20nm。 The thickness of the light emitting layer is preferably 1-50 nm, and more preferably 3-20nm.
当发光层的厚度落入以上优选数字范围时，用有机EL元件发出的红光的纯度是高的，和发光效率和发光亮度是充分的。 When the thickness of the light-emitting layer preferably falls within the above numerical range, the purity of red light emitted by the organic EL element is high, and the emission luminance and luminous efficiency are adequate. 当发光层的厚度落入以上更优选的数值范围时，这些特征是显著的。 When the thickness of the light-emitting layer falls within the above more preferable numerical range, these features are significant.
本发明的有机EL元件具有在正极和负极之间的有机薄膜层，它含有发光层。 The organic thin film layer of the organic EL element of the present invention has positive and negative electrodes between which contains a light-emitting layer. 根据目的，有机EL元件可以包括其它层，如保护层或类似物。 The purpose of the organic EL element may include other layers such as a protective layer or the like.
有机薄膜层至少具有发光层，和如果需要，还可以包括空穴注射层，空穴迁移层，电子迁移层或类似物。 The organic thin film layer has at least a light emitting layer, and, if desired, may further include a hole injection layer, a hole transport layer, electron transport layer, or the like.
-正极-正极不是特别限制的，和能够根据目的适当选择。 - positive - positive electrode is not particularly limited, and can be appropriately selected depending on the purpose. 正极优选能够将空穴(载体)供给有机薄膜层。 The positive electrode is preferably a hole can be organic thin film layer (support) is supplied. 具体说，当有机薄膜层仅具有发光层时，优选正极能够将空穴供给发光层。 Specifically, when the organic thin film layer has only the light emitting layer, holes can be supplied to the positive electrode is preferably the light emitting layer. 当有机薄膜层也具有正极迁移层时，优选正极能够将空穴供给空穴迁移层。 When the organic thin film layer also has a positive electrode transport layer, a positive electrode can be preferably supplied to the hole a hole transport layer. 当有机薄膜层还具有空穴注射层时，优选正极能够将空穴(或载体)供给空穴注射层。 When the organic thin film layer further comprises a hole injection layer, the positive electrode can be preferably holes (or carrier) supplying hole injection layer.
正极的材料不是特别限制的，和可以根据目的适当选择。 The positive electrode material is not particularly limited, and may be appropriately selected depending on the purpose. 实例包括金属、合金、金属氧化物，导电化合物，它们的混合物等。 Examples include metals, alloys, metal oxides, conductive compounds, mixtures thereof and the like. 在这些当中，具有4eV或4eV的功函数的材料是优选的。 Among these materials having a work function of 4eV or 4eV it is preferred.
正极材料的具体实例是导电金属氧化物，如氧化锡，氧化锌，氧化铟，氧化锡铟(ITO)等；金属如金、银、铬、镍或类似物；这些金属和导电金属氧化物的混合物或多层结构；无机导电物质如碘化铜、硫化铜等；有机导电材料如聚苯胺、聚噻吩、聚吡咯等；这些材料和ITO的多层结构；以及其它等等。 Specific examples of the positive electrode material is a conductive metal oxide, such as tin oxide, zinc oxide, indium oxide, indium tin oxide (ITO) and the like; metals such as gold, silver, chromium, nickel, or the like; these metals and conductive metal oxide mixture or a multilayer structure; inorganic conductive substances such as copper iodide, copper sulfide and the like; organic conductive materials such as polyaniline, polythiophene, polypyrrole and the like; a multilayer structure of these materials and ITO; and other like. 可以使用这些材料的一种，或者可以结合使用两种或多种材料。 These materials may be used, or may be used in combination of two or more materials. 在这些当中，导电金属氧化物是优选的，和ITO是特别优选的，从生产能力、高导电率、透明性等来看。 Among these, conductive metal oxides are preferable, and ITO is particularly preferred from productivity, high conductivity, transparency and the like look.
正极厚度不是特别限制的，和能够根据材料等来适当选择。 The thickness of the positive electrode is not particularly limited, and can be suitably selected according to the material and the like. 然而，1-5000nm的厚度是优选的，和20-200nm的厚度是更优选的。 However, the thickness 1-5000nm is preferred, and a thickness of 20-200nm are more preferable.
正极通常在由玻璃如碱石灰玻璃、无碱玻璃或类似物；透明树脂；或类似物形成的基材上形成。 The positive electrode is typically made of glass such as soda-lime glass, alkali-free glass or the like; or the like is formed on a substrate is formed; a transparent resin.
当玻璃用作基材时，用硅石或类似物进行进行隔离涂层处理的无碱玻璃，或碱石灰玻璃是优选的，从玻璃上很少有洗脱离子的观点来看。 When glass is used as substrate for non-alkali glass with a silica or the like to isolate the coating, or soda-lime glass is preferred, from the viewpoint of the glass with little ion elution of view.
基材的厚度不是特别限制的，只要它的厚度足以保持机械强度。 Thickness of the substrate is not particularly limited as long as it is a thickness sufficient to maintain the mechanical strength. 当玻璃用作基材时，厚度通常是0.2mm或0.2mm以上，和0.7mm或0.7mm以上是优选的。 When glass is used as substrate, the thickness is usually 0.2mm or above 0.2mm, 0.7mm and 0.7mm or more is preferable.
正极能够适合通过上述方法来形成，例如汽相淀积法，湿型成膜法，电子束法，溅射法，反应性溅射法，MBE(分子束取向生长)法，簇离子束法，离子镀法，等离子体聚合法(高频激发离子镀法)，分子积聚法，LB方法，打印法，转移法，通过化学反应法涂敷ITO分散体的方法(溶胶-凝胶法或类似方法)，或类似物。 The positive electrode can be suitably formed by the above method, such as vapor deposition method, wet film forming method, electron beam method, sputtering method, reactive sputtering method, the MBE (molecular beam epitaxy) method, cluster ion beam method, an ion plating method, a plasma polymerization method (high frequency excitation ion plating method), a molecule accumulating method, an LB method, printing method, transfer method, chemical reaction method by ITO coating dispersion (sol - gel method, or the like ), or the like.
通过在正极上进行洗涤或其它处理，有机EL元件的驱动电压能够被降低，和发光效率能够增加。 Can be reduced by washing or other treatment, the drive voltage of the organic EL elements on the positive electrode, and the light emitting efficiency can be increased. 其它处理的适合例子包括UV-臭氧处理，等离子处理或类似方法，在其中正极材料例如是ITO的情况下。 Other suitable examples include treatment UV- ozone treatment, plasma treatment or the like, in which the cathode material, for example, the case of ITO.
-负极-负极不是特别限制的，和能够根据目的适当选择。 - negative - negative electrode are not particularly limited, and can be appropriately selected depending on the purpose. 负极优选能够将电子供给有机薄膜层。 The organic thin film negative electrode is preferably capable of supplying electrons. 具体说，当有机薄膜层仅具有发光层时，优选负极能够将电子供给发光层。 Specifically, when the organic thin film layer has only the light emitting layer, the negative electrode can be preferably supplied to the electron emission layer. 当有机薄膜层还具有电子迁移层时，优选负极能够将电子供给电子迁移层。 When the organic thin film layer further comprises an electron transport layer, the negative electrode is preferably capable of supplying electrons electron transport layer. 当在有机薄膜层和负极之间具有电子注射层时，优选负极能够将电子供给电子注射层。 When an electron injection layer between the organic thin film layer and the negative electrode, the negative electrode is preferably capable of electron injection layer supplying electrons.
负极的材料不是特别限制的，和能够根据在负极和与其相邻的各层或分子如电子迁移层、发光层等之间的粘合力，电离电位，稳定性等来适当选择。 The negative electrode material is not particularly limited, and can be a negative electrode and the layers or molecules adjacent thereto such as the adhesion between the electron transport layer, light emitting layer, ionization potential, stability and the like is appropriately selected depending on. 实例是金属、合金、金属氧化物、导电化合物、它们的混合物等。 Examples are metals, alloys, metal oxides, electrically conductive compounds, mixtures thereof and the like.
负极材料的具体实例是碱金属(例如，Li，Na，K，Cs等)，碱土金属(例如，Mg，Ca等)，金，银，铅，铝，钠-钾合金或它们的混合金属，锂-铝合金或它们的混合金属，镁-银合金或它们的混合金属，稀土金属如铟、镱等，它们的合金等。 Specific examples of the anode materials are alkali metals (e.g., Li, Na, K, Cs, etc.), alkaline earth metal (e.g., Mg, Ca, etc.), gold, silver, lead, aluminum, sodium - potassium alloys or mixtures of metal, lithium - aluminum alloy or mixed metals thereof, a magnesium - silver alloy or mixed metals thereof, rare earth metals such as indium and ytterbium, alloys thereof and the like.
可以使用这些材料的一种，或者可以使用两种或多种的结合物。 These materials may be used, or two or more thereof. 在这些当中，具有4eV或4eV以下的功函的材料是优选的。 Among these materials having a work function of 4eV 4eV or less it is preferable. 铝，锂-铝合金或它们的混合金属，镁-银合金或它们的混合金属等是更优选的。 Aluminum, lithium - aluminum alloy or mixed metals thereof, a magnesium - silver alloy or mixed metals thereof and the like are more preferable.
负极的厚度不是特别限制的，和可以根据负极的材料或类似物来适当选择。 The thickness of the negative electrode is not particularly limited, and may be suitably selected in accordance with the negative electrode material or the like. 厚度优选是1-10,000nm，和20-200nm是更优选的。 The thickness is preferably 1-10,000nm, and is more preferably 20-200nm.
负极能够适合通过上述方法来形成，例如汽相淀积法，湿型成膜法，电子束法，溅射法，反应性溅射法，MBE(分子束取向生长)法，簇离子束法，离子镀法，等离子聚合法(高频激发离子镀法)，分子积聚法，LB法，打印法，转移法，或类似物。 The negative electrode can be suitably formed by the above method, such as vapor deposition method, wet film forming method, electron beam method, sputtering method, reactive sputtering method, the MBE (molecular beam epitaxy) method, cluster ion beam method, an ion plating method, plasma polymerization method (high frequency excitation ion plating method), molecular accumulation, LB technique, printing method, transfer method, or the like.
当结合使用两种或多种材料作为负极材料时，可以同时汽相淀积两种或多种材料，使得形成合金电极或类似物，或可以汽相淀积预先制备的合金，使得形成合金电极或类似物。 When used in combination of two or more materials as the negative electrode material, while the vapor deposition of two or more materials, so as to form an alloy electrode or the like, or may be vapor-deposited alloy prepared in advance, so as to form an alloy electrode or the like.
对于正极和负极的电阻值，低值是优选的。 For positive and negative resistance values, low values ​​are preferred. 优选电阻值是几百Ω/□或更低。 Preferably the resistance value is several hundreds Ω / □ or less.
-空穴注射层-空穴注射层不是特别限制的，和可以根据目的适当选择。 - hole injection layer - hole injection layer is not particularly limited, and may be appropriately selected depending on the purpose. 例如，优选的是，空穴注射层具有将空穴从正极中注射空穴的功能，在应用电场时。 For example, it is preferable that the hole injection layer having hole injecting holes from the positive electrode of the function, in the application of an electric field.
空穴注射层的材料不是特别限制的，可以根据目的来适当选择。 Material of the hole injection layer is not particularly limited, may be appropriately selected depending on the purpose. 适合实例包括铜酞菁，聚苯胺，由下式表示的星芒状胺等。 Suitable examples include copper phthalocyanine, polyaniline, the amine represented by the formula stellate-shaped, and the like.
空穴注射层的厚度不是特别限制的，和可以根据目的适当选择。 Thickness of the hole injection layer is not particularly limited, and may be appropriately selected depending on the purpose. 例如，大约1-100nm的厚度是优选的，和5-50nm是更优选的。 For example, a thickness of about 1-100nm is preferred, and more preferably 5-50nm.
空穴注射层能够适合通过上述方法来形成，例如汽相淀积法，湿型成膜法，电子束法，溅射法，反应性溅射法，MBE(分子束取向生长)法，簇离子束法，离子镀法，等离子体聚合法(高频激发离子镀法)，分子积聚法，LB法，打印法，转移法或类似方法。 The hole injection layer can be suitably formed by the above method, such as vapor deposition method, wet film forming method, electron beam method, sputtering method, reactive sputtering method, the MBE (molecular beam epitaxy) method, cluster ion beam method, an ion plating method, a plasma polymerization method (high frequency excitation ion plating method), molecular accumulation, LB technique, printing method, transfer method or the like.
-空穴迁移层-空穴迁移层不是特别限制的，和可以根据目的适当选择。 - hole transporting layer - hole transport layer is not particularly limited, and may be appropriately selected depending on the purpose. 例如，在应用电场的时候具有从正极输送空穴的功能，或者阻断从负极注射的电子的功能的层是优选的。 For example, in the application of an electric field having a function of transporting holes from the positive electrode or the negative electrode block it is preferred from the electron injection layer functions.
如上所述，稠合八环芳族化合物可以用作空穴迁移层的材料。 As described above, condensed eight-ring aromatic compound may be used as the material of the hole transport layer. 除了稠合八环芳族化合物以外的材料不是特别限制的，可以根据目的来适当选择。 In addition to the eight materials other than fused ring aromatic compound is not particularly limited, may be appropriately selected depending on the purpose. 实例包括芳族胺化合物，咔唑，咪唑，三唑，噁唑，噁二唑，多芳基链烷烃，吡唑啉，吡唑啉酮，亚苯基二胺，芳基胺，胺取代的查耳酮，苯乙烯基蒽，芴酮，腙，芪，硅氮烷，苯乙烯基胺，芳族二甲叉基化合物，卟吩化合物，聚硅氧烷化合物，聚(N-乙烯基咔唑)，苯胺共聚物，噻吩低聚物和聚合物，导电大分子低聚物和聚合物如聚噻吩等，碳膜等。 Examples include aromatic amine compounds, carbazole, imidazole, triazole, oxazole, oxadiazole, polyaryl alkane, pyrazoline, pyrazolone, phenylenediamine, arylamine-substituted, amine chalcone, styryl anthracene, fluorenone, hydrazone, stilbene, silazane, styrylamine, aromatic diacid ylidene compounds, porphine compounds, silicone compounds, poly (N- vinylcarbazole oxazole), aniline copolymers, thiophene oligomers and polymers, electrically conductive macromolecular oligomers and polymers such as polythiophene, carbon and the like.
能够使用这些物质的一种，或者可以结合使用两种或多种。 One of these substances can be used, or two or more kinds may be used in combination. 在这些当中，芳族胺化合物是优选的，和尤其用下式表示的TPD(N，N'-二苯基-N，N'-双(3-甲基苯基)-[1，1'-联苯基]-4，4'-二胺)，和用下式表示的NPD(N，N'-二萘基-N，N'-二苯基-[1，1'-联苯基]-4，4'-二胺)等是更优选的。 Among these, aromatic amine compounds are preferable, and in particular by the formula of TPD (N, N'- diphenyl -N, N'- bis (3-methylphenyl) - [1,1 ' - biphenyl] -4,4'-diamine), and represented by the following formula NPD (N, N'- two naphthyl -N, N'- diphenyl - [1,1'-biphenyl ] -4,4'-diamine) and the like are more preferred. 空穴迁移层的厚度不是特别限制的，和可以根据目的适当选择。 Thickness of the hole transport layer is not particularly limited, and may be appropriately selected depending on the purpose. 该厚度通常是1-500nm，和10-100nm的厚度是优选的。 This thickness is generally 1-500nm, and a thickness of 10-100nm are preferred.
空穴迁移层能够适宜通过上述方法来形成，例如，汽相淀积法，湿型成膜法电子束法，溅射法，反应性溅射法，MBE(分子束取向生长)法，簇离子束法，离子镀法，等离子聚合法(高频激发离子镀法)，分子积聚法，LB法，打印法，转移法或类似方法。 Hole transporting layer can suitably be formed by the above methods, e.g., vapor deposition method, a wet-type film forming method of the electron beam method, sputtering method, reactive sputtering method, the MBE (molecular beam epitaxy) method, cluster ion beam method, an ion plating method, plasma polymerization method (high frequency excitation ion plating method), molecular accumulation, LB technique, printing method, transfer method or the like.
-电子迁移层-电子迁移层不是特别限制的，和可以根据目的适当选择。 - electron transport layer - an electron transport layer is not particularly limited, and may be appropriately selected depending on the purpose. 例如，具有从负极迁移电子的功能，或阻断从负极注射的空穴的功能的层是优选的。 For example, the transfer of electrons having a negative function, or blocking is preferable from the injection of holes from the anode functional layer.
如上所述，稠合八环芳族化合物可以用作电子迁移层的材料。 As described above, condensed eight-ring aromatic compound material may be used as the electron transport layer. 除了稠合八环芳族化合物以外的材料不是特别限制的和可以根据目的来适当选择。 A material other than eight-ring aromatic compound is not particularly fused and may be appropriately selected depending on the purpose of limitation. 实例包括其配体是8-喹啉醇的有机金属配合物或类似物的喹啉衍生物如三(8-喹啉醇基)铝(Alq)或其衍生物，噁二唑衍生物，三唑衍生物，菲咯啉衍生物，苝衍生物，吡啶衍生物，嘧啶衍生物，喹喔啉衍生物，二苯基醌衍生物，硝基取代的芴衍生物等。 Examples thereof include quinoline derivatives ligand is an organic metal complex or the like of 8-quinolinol such as tris (8-quinolinolato alcohol) aluminum (of Alq) or derivatives thereof, oxadiazole derivatives, tris derivatives, phenanthroline derivatives, perylene derivatives, pyridine derivatives, pyrimidine derivatives, quinoxaline derivatives, diphenylquinone derivatives, nitro-substituted fluorene derivatives.
电子迁移层的厚度不是特别限制的，和可以根据目的来适当选择。 The thickness of the electron transport layer is not particularly limited, and may be appropriately selected depending on the purpose. 厚度通常是大约1-500nm，和10-50nm是优选的。 The thickness is typically about 1-500nm, and 10-50nm are preferred. 电子迁移层可以是单层结构，或者可以是层压层结构。 Electron transport layer may be a single layer structure, or may be a laminated layer structure.
电子迁移层能够适宜通过上述方法来形成，例如汽相淀积法，湿型成膜法，电子束法，溅射法，反应性溅射法，MBE(分子束取向生长)法，簇离子束法，离子镀法，等离子体聚合法(高频激发离子镀法)，分子积聚法，LB法，打印法，转移法或类似方法。 Electron transporting layer can suitably be formed by the above method, such as vapor deposition method, wet film forming method, electron beam method, sputtering method, reactive sputtering method, the MBE (molecular beam epitaxy) method, cluster ion beam method, an ion plating method, a plasma polymerization method (high frequency excitation ion plating method), molecular accumulation, LB technique, printing method, transfer method or the like.
-其它层-本发明的有机EL元件可以具有其它层，这根据目的来适当选择。 - Other layers - an organic EL device of the present invention may have other layers which are appropriately selected depending on the purpose. 其它层的适合实例是保护层等。 Suitable examples of other layers are a protective layer.
保护层不是特别限制的，和可以根据目的来适当选择。 The protective layer is not particularly limited, and may be appropriately selected depending on the purpose. 例如，能够抑制促进有机EL元件老化的分子和物质，如湿气、氧等渗入有机EL元件的层是优选的。 For example, molecules capable of inhibiting and promoting substance of the organic EL element of aging, such as moisture, oxygen penetration layer of the organic EL element are preferred.
保护层的材料的实例是金属，如In，Sn，Pb，Au，Cu，Ag，Al，Ti，Ni等，金属氧化物如MgO，SiO，SiO2，Al2O3，GeO，NiO，CaO，BaO，Fe2O3，Y2O3，TiO2等，氮化物如SiN，SiNxOy等，金属氟化物如MgF2，LiF，AlF3，CaF2等，聚乙烯，聚丙烯，聚甲基丙烯酸甲酯，聚酰亚胺，聚脲，聚四氟乙烯，聚氯三氟乙烯，聚二氯二氟乙烯，氯三氟乙烯和二氯二氟乙烯的共聚物，通过使含有四氟乙烯和至少一种共聚单体的单体混合物共聚获得的共聚物，在共聚主链中具有环状结构的含氟共聚物，其吸水系数为1％或1％以上的吸水性物质，其吸水系数是0.1％或0.1％以下的防湿物质等。 Examples of the material of the protective layer are metals such as In, Sn, Pb, Au, Cu, Ag, Al, Ti, Ni, etc., metal oxides such as MgO, SiO, SiO2, Al2O3, GeO, NiO, CaO, BaO, Fe2O3 , Y2O3, TiO2 and the like, nitrides such as SiN, SiNxOy, etc., metal fluorides such as MgF2, LiF, AlF3, CaF2, etc., polyethylene, polypropylene, polymethyl methacrylate, polyimide, polyurea, polytetrafluoroethylene vinyl fluoride, polychlorotrifluoroethylene, polydichlorodifluoroethylene fluoride, chlorotrifluoroethylene and vinylidene fluoride copolymer dichloride, by containing tetrafluoroethylene and at least one comonomer copolymerizable mixture of monomers obtained copolymer, the copolymer having a fluorine-containing copolymer backbone cyclic structure, coefficient of water absorption of 1% or less than 1% of the water-absorbing material, its water absorption coefficient is 0.1% or 0.1% or less of moisture and other substances.
保护层能够适合通过上述方法来形成，例如汽相淀积法，湿型成膜法，溅射法，反应性溅射法，MBE(分子束取向生长)法，簇离子束法，离子镀法，等离子体聚合法(高频激发离子镀法)，打印法，转移法，或类似物。 The protective layer can be suitably formed by the above method, such as vapor deposition method, a wet-type film forming method, sputtering method, reactive sputtering method, the MBE (molecular beam epitaxy) method, cluster ion beam method, an ion plating method , plasma polymerization (high frequency excitation ion plating method), printing method, transfer method, or the like.
本发明有机EL元件的结构不是特别限制的，和可以根据目的来适当选择。 Structure of the organic EL element of the present invention is not particularly limited, and may be appropriately selected depending on the purpose. 层结构的适合实例是以下层结构(1)-(13)：(1)正极/空穴注射层/空穴迁移层/发光层/电子迁移层/电子注射层/负极，(2)正极/空穴注射层/空穴迁移层/发光层/电子迁移层/负极，(3)正极/空穴迁移层/发光层/电子迁移层/电子注射层/负极，(4)正极/空穴迁移层/发光层/电子迁移层/负极，(5)正极/空穴注射层/空穴迁移层/发光和电子迁移层/电子注射层/负极，(6)正极/空穴注射层/空穴迁移层/发光和电子迁移层/负极，(7)正极/空穴迁移层/发光和电子迁移层/电子注射层/负极，(8)正极/空穴迁移层/发光和电子迁移层/负极，(9)正极/空穴注射层/空穴迁移和发光层/电子迁移层/电子注射层/负极，(10)正极/空穴注射层/空穴迁移和发光层/电子迁移层/负极，(11)正极/空穴迁移和发光层/电子迁移层/电子注射层/负极，(12)正极/空穴迁移和发光层/电子迁移层/负极，(13)正极/空穴迁移和 Suitable examples of the layer structure is lower structure (1) - (13) :( 1) positive electrode / hole injection layer / hole transporting layer / light emitting layer / electron transporting layer / electron injection layer / negative electrode, (2) positive electrode / hole injection layer / hole transporting layer / light emitting layer / electron transporting layer / negative electrode, (3) positive electrode / hole transporting layer / light emitting layer / electron transporting layer / electron injection layer / negative electrode, (4) positive electrode / hole transport layer / light emitting layer / electron transporting layer / negative electrode, (5) positive electrode / hole injection layer / hole transporting layer / a light emitting and electron transport layer / electron injection layer / negative electrode, (6) positive electrode / hole injection layer / hole transporting layer / a light emitting and electron transporting layer / negative electrode, (7) positive electrode / hole transporting layer / a light emitting and electron transport layer / electron injection layer / negative electrode, (8) positive electrode / hole transporting layer / a light emitting and electron transporting layer / negative electrode , (9) positive electrode / hole injection layer / hole transport and light emitting layer / electron transporting layer / electron injection layer / negative electrode, (10) positive electrode / hole injection layer / hole transport and light emitting layer / electron transporting layer / negative electrode , (11) positive electrode / hole transport and light emitting layer / electron transporting layer / electron injection layer / negative electrode, (12) positive electrode / hole transport and light emitting layer / electron transporting layer / negative electrode, (13) positive electrode / hole transport and 光和电子迁移层/负极，其它等等。 Light and electron transporting layer / negative electrode, like other.
在这些层结构中，当图解说明(4)正极/空穴迁移层/发光层/电子迁移层/负极时，它如图1所示。 In such a layer structure, illustrated when (4) positive electrode / hole transporting layer / light emitting layer / electron transporting layer / negative electrode, it is shown in Fig. 有机EL元件10具有这样的层结构，其中正极14(例如ITO电极)在玻璃基材12上形成，空穴迁移层16，发光层18，电子迁移层20，和负极22(例如Al-Li电极)按此次序分层叠加。 The organic EL element 10 has a layer structure in which the positive electrode 14 (e.g., ITO electrodes) 12 are formed on a glass substrate, a hole transport layer 16, light emitting layer 18, electron transport layer 20, and the negative electrode 22 (e.g. Al-Li electrode ) superimposed layered in this order. 正极14(例如ITO电极)和负极22(例如Al-Li电极)经电源彼此连接。 The positive electrode 14 (e.g. ITO electrode) and the negative electrode 22 (e.g. Al-Li electrode) are connected to each other via the power supply. 用于发出红光的有机薄膜层24通过空穴迁移层16、发光层18和电子迁移层20来形成。 The organic thin film layer for emitting red light 24 through the hole transport layer 16, light emitting layer 18 and an electron transport layer 20 is formed.
作为本发明有机EL元件的发射波长，580-780nm是优选的，和600-650nm是更优选的。 As the emission wavelength of the organic EL element of the present invention, 580-780nm is preferred, and more preferably 600-650nm.
至于本发明的有机EL元件的发光效率，有机EL元件理想地在10V或10V以下的电压下发射红光，和优选在7V或7V以下发射红光，和更优选在5V或5V以下发射红光。 As the light emitting efficiency of the organic EL element of the present invention, the organic EL element desirably emits at a voltage of 10V or 10V or red, and preferably emits red light at 7V 7V or less, and more preferably at or below 5V 5V emitting red .
在10V的外加电压下，本发明有机EL元件的发光亮度优选是100cd/m2或100cd/m2以上，和更优选是500cd/m2或500cd/m2以上，和特别优选1000cd/m2或1000cd/m2以上。 At an applied voltage of 10V, the emission luminance is preferably the organic EL element of the present invention is 100cd / m2 or 100cd / m2 or more, and more preferably is 500cd / m2 or 500cd / m2 or more, and particularly preferably 1000cd / m2 or 1000cd / m2 or more .
本发明的有机EL元件能够适用于各种领域，例如计算机，装在车上的显示装置，室外显示设备，家用机器，工业用机器，家用电子设备，交通相关性显示设备，彩色显示设备，日历显示设备，荧光屏，声音设备等。 The organic EL device of the present invention can be applied to various fields, such as a computer, a display device mounted in the vehicle, outdoor display devices, machines for household, industrial machines, home electronics, traffic-related exemplary display device, a color display device, the calendar display device, screen, sound equipment. 本发明的有机EL元件能够特别优选用于以下描述的本发明的有机EL显示器。 The organic EL display of the present invention, the organic EL element of the present invention can be particularly preferably used in the following description.
&lt;有机EL显示器&gt; & Lt; Organic EL display & gt;
本发明的有机EL显示器不是特别限制的，除了它利用本发明的有机EL元件之外，和能够适当利用已知结构。 The organic EL display of the present invention are not particularly limited, except that it utilizes the organic EL element of the present invention outside, and can appropriately utilize known structures.
本发明的有机EL显示器可以仅发出单一颜色的红光，或者可以可以是发射多种颜色光的全色类型显示器。 The organic EL display of the present invention may emit only a single color of red light, or may emit multiple colors of light may be a full-color type displays.
关于用于制备有机EL显示器的方法，全色类型的显示器，例如，如在“Gekkan Display”September 2000，pp.33-37中所公开的那样，具有三色发光法，其中发射分别对应于三种原色(蓝色(B)，绿色(G)，红色(R))的光的有机EL元件布置在基材上；其中通过用于发射白光的有机EL元件发射的白光通过滤色器，以便被分为三种原色的方法；其中用于发射蓝光的由有机EL元件发出的蓝光通过荧光染料层并转化成红(R)和绿(G)的颜色转换法；以及其它等等。 Relates to a method for preparing an organic EL display, a full-color type display, for example, as described in "Gekkan Display" September 2000, as disclosed in pp.33-37, having a three-color light emitting method wherein three respectively corresponding to the emission primary colors (blue (B), green (G), red (R & lt)) of the organic EL element light disposed on a substrate; wherein the white organic EL device for emitting white light transmitted through a color filter, in order to the method is divided into three primary colors; wherein a blue light emitted from the organic EL element emits blue light through a fluorescent dye layer and converted into red (R) and green (G) color conversion method; and other like. 然而，因为所用的本发明有机EL元件用于发射红光，本发明能够特别适合用于三色发光法。 However, since the organic EL device of the present invention is used for emitting red light, the present invention can be particularly suitable for three-color light emitting method.
当通过三色发光法制造全色类型的有机EL显示器时，除了用于发射红光的本发明的有机EL元件以外，还需要用于发射绿光的有机EL元件和用于发射蓝光的有机EL元件。 When manufacturing a full-color type organic EL display by the three color emitting method, in addition to the organic EL element for emitting red light of the present invention, it also is a need for an organic EL element emitting green light and a blue light emitting organic EL element.
用于发射绿光的有机EL元件不是特别限制的，和能够适当选自已知的元件之中。 , And can be appropriately selected from known elements used for the organic EL element emitting green light is not particularly limited in. 例如，其层结构是ITO(正极)/NPD/Alq/Al-Li(负极)的元件或类似物是适合的。 For example, the layer structure is ITO (positive electrode) / NPD / Alq / Al-Li (negative electrode) elements or the like are suitable.
用于发射蓝光的有机EL元件不是特别限制的，和能够适当选自已知元件之中。 The organic EL element for emitting blue light is not particularly limited, and can be appropriately selected from among known elements. 例如，其层结构是ITO(正极)/NPD/用下式表示的DPVBi/Alq/Al-Li(负极)的元件或类似物是适合的。 For example, a layer structure which is DPVBi / Alq / Al-Li (negative electrode) element, or the like represented by the formula ITO (positive electrode) / NPD / by the following are suitable. DPVBi是4，4'-双(2，2'-二苯基-乙烷-1-基)-联苯。 DPVBi is 4,4'-bis (2,2'-diphenyl - ethane-1-yl) - biphenyl.
有机EL显示器的模式不是特别限制的，和能够根据目的来适当选择。 The organic EL display mode is not particularly limited, and can be appropriately selected depending on the purpose. 适合实例包括无源矩阵板，有源矩阵板等，如在“Nikkei Electronics”，No.765，March 13，2000，pp.55-62中公开的那些。 Suitable examples include a passive matrix panel, an active matrix board, etc., as described in "Nikkei Electronics", No.765, March 13,2000, pp.55-62 those disclosed.
如图2所示，无源矩阵板例如具有条带形正极14(例如ITO电极)，它们被并列布置在玻璃基材12上。 2, for example, a passive matrix plate strip-shaped positive electrode 14 (e.g., ITO electrodes), which are arranged in parallel on a glass substrate 12. 无源矩阵板在正极14上具有用于发射红光的条带形有机薄膜层24，用于发射绿光的条带形有机薄膜层26，和用于发射蓝光的条带形有机薄膜层28，它们依次和彼此平行布置，并与正极14成基本直角的方向。 Passive matrix-shaped plate having an organic thin film layer 28 for emitting red light with a strip-shaped organic thin-film layers 24 for emitting green light with a strip-shaped organic thin film layer 26, and a blue light emitting strips on the positive electrode ribbon 14 , and which in turn are arranged parallel to each other and substantially at right angles to the direction of the positive electrode 14. 无源矩阵板在用于发射红光的有机薄膜层24上具有有机薄膜层26，用于发射绿光，以及有机薄膜层28，用于发射蓝光，负极22具有与有机薄膜层24、26、28相同的构型。 Passive matrix panels for red light emitting organic thin film layer 24 of an organic thin film layer 26 for emitting green light, and an organic thin film layers 28 for emitting blue light, the negative electrode 22 having the organic thin film layer 24, 26, 28 the same configuration.
在无源矩阵板中，如图3所示，由许多正极14形成的正极列30和由许多负极22形成的负极列22以基本正交方向彼此交叉，以便形成电路。 In the passive matrix panel, as shown in Figure 3, the positive electrode 14 is formed by a number of columns of the positive electrode and the negative electrode 30 is formed by a number of columns 22 in a substantially orthogonal direction the negative electrode 22 cross each other to form a circuit. 用于发射红光、绿光和蓝光的各有机薄膜层24、26、28放置在各交叉点，用作象素。 Each organic thin film layers for emitting red, green and blue light is placed at each intersection 24, 26, serves as a pixel. 许多有机EL元件34与各象素相一致存在。 Many organic EL element 34 of each pixel is consistent with the presence. 在无源矩阵板中，当通过恒流电源36施加电流于正极列30中的正极14之一和负极列32中的负极22之一时，此时，电流施加于位于交叉点的有机EL薄膜层，以及在该位置的有机EL薄膜层发光。 In the passive matrix panel, when current is applied to one of the positive electrode to the positive electrode 36 through the constant current source 30 in one row 14 and column 32 in the negative electrode of the negative electrode 22, this time, current is applied to the organic EL thin-film layer located at the intersection of , and a light emitting layer of the organic thin film EL position. 通过控制象素单元的发光，能够轻易形成全色图象。 By controlling the light emitting pixel units, a full-color image can easily be formed.
如图4所示，例如在有源矩阵板中，扫描线、数据线和电流供给线在玻璃基材12上以格状布局形成。 As shown in FIG 4, for example, in an active matrix panel, scan lines, data lines and current supply lines are formed in lattice layout on the glass substrate 12. 有源矩阵板具有TFT电路40，它连接于形成格状布局的扫描线等，并布置在各方格中，以及正极14(例如，ITO电极)，它能够由TFT电路40驱动和布置在各方格内。 The active matrix panel has TFT circuits 40, which is connected to the scan lines formed in lattice layout, and arranged in each square, and in the positive electrode 14 (eg, ITO electrodes) which can be driven by the TFT circuits 40 and disposed in the the box. 有源矩阵板具有在正极14上的用于发射红光的条带形有机薄膜层24，用于发射绿光的条带形有机薄膜层26，和用于发射蓝光的条带形有机薄膜层28，它们按序和彼此平行布置。 An active matrix having on the positive electrode plate 14 for emitting red strip-shaped organic thin-film layers 24 for emitting green light strip 26 strip-shaped organic thin film layer, and a blue light emitting stripe strip-shaped organic thin film layer 28, which are arranged parallel to each other and in sequence. 在用于发射红光的有机薄膜层24，用于发射绿光的有机薄膜层26和用于发射蓝光的有机薄膜层28之上，有源矩阵板具有负极22，它被布置以使得覆盖所有有机薄膜层24、26、28。 In the organic thin film layer for emitting red light 24, the organic thin film layer emitting green organic thin film layer 26 for emitting blue light and a top 28, a negative electrode having an active matrix plate 22, which is disposed so as to cover all The organic thin film layer 24, 26. 用于发射红光的有机薄膜层24、用于发射绿光的有机薄膜层26和用于发射蓝光的有机薄膜层28各自具有空穴迁移层16，发光层18，和电子迁移层20。 For the organic thin film layer 24 emits red light, the organic thin film layer 26 for emitting green light and a blue light emitting organic thin film layer 28 each having a hole transport layer 16, light emitting layer 18, and an electron transport layer 20.
如图5所示，例如在有源矩阵板中，平行提供的许多扫描线46与平行提供的许多数据线42和电流供给线彼此正交，以便形成格状布局。 5, for example, in an active matrix panel, a plurality of data lines 42 and scanning lines many current supply line 46 provided in parallel and provided in parallel orthogonal to each other to form a lattice arrangement. 连接用于开关的TFT48和用于驱动的TFT50以在各方格内形成电路。 For switching and connecting TFT48 to TFT50 for driving the circuit are formed in each square. 当从驱动线路38施加电流时，能够驱动每一方格的用于开关的TFT48和用于驱动的TFT50。 38 when a current is applied from the driving circuit capable of driving each of the grid and for switching TFT48 TFT50 for driving. 在各方格中，用于发射红光、绿光和蓝光的有机薄膜层24、26、28用作象素。 The organic thin film layer in each square, for emitting red, green, and blue pixels 24, 26 as. 在有源矩阵板中，当从驱动线路38施加电压于布置在侧向的扫描线46和布置在长轴方向的电流供给线44之一时，此刻，位于交叉点的用于开关的TFT48被驱动，和伴随该驱动，用于驱动的TFT50被驱动，以及在该位置的有机EL元件52发光。 In an active matrix panel, when a voltage is applied to the scanning lines arranged in a lateral TFT48 46 and arranged in the axial direction of one of the current supply line 44, at the moment, a switch located at the intersection of the line 38 is driven from a drive , and accompanying this driving, for driving TFT50 is driven, and the organic EL element 52 emits light at that location. 通过控制象素单元的发光，能够轻易形成全色图象。 By controlling the light emitting pixel units, a full-color image can easily be formed.
本发明的有机EL显示器能够适用于各种领域，例如计算机，装在车上的显示装置，室外显示设备，家用机器，工业用机器，家用电子设备的机器，交通相关性显示设备，时钟显示设备，日历显示设备，荧光屏，发声机器等。 The organic EL display of the present invention can be applied to various fields, such as computers, vehicle-mounted display devices, outdoor display devices, machines for household, industrial machine, the machine home electronics, traffic-related exemplary display device, the display device clock , calendar display device, screen, sound machines.
实施例下文中将具体描述本发明的实施例。 Example embodiments will be hereinafter detailed description of embodiments of the present invention. 然而，本发明决不受限于这些实施例。 However, the present invention is by no means limited to these embodiments.
[合成实施例1]二萘并(2'：3'-3：4)(2”：3”-8：9)芘根据出版物(“Journal of the Chemical Society，1949，p.2013)合成由下式表示的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 [Synthesis Example 1] Dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) (1949, p.2013 "Journal of the Chemical Society,) pyrene synthesized according to the publication pyrene (92 ':: 3 "-8) by two and naphthalene represented by the formula (2':: 3'-3 4).
[合成实施例2]5，10-二苯基-二萘并(2'：3'-3：4)(2”：3”-8：9)芘的合成将二萘并(2'：3'-3：4)(2”：3”-8：9)芘溶解在四氯化碳中。 [Synthesis Example 2] 5,10-diphenyl - dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene in Synthesis of dinaphtho (2': 3'-3: 4) (2 ": 3" -8: 9) pyrene is dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 将混合物反应4小时，被溴化。 The mixture was reacted for 4 hours and brominated. 此后，根据常用方法纯化混合物，获得了5，10-二溴二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 Pyrene (92 ':: 3 "-8) Thereafter, the mixture was purified according to the conventional method, to obtain the 5,10-dibromo-dinaphtho (2':: 3'-3 4). 通过使用0.01mol当量的四(三苯基膦)合钯(0)[Pd(PPh3)4](其中“Ph”表示苯基)作为催化剂，在二甲苯/2M碳酸钠水溶液中，使2mol当量的苯基硼酸[Ph-B(OH)2](其中“Ph”表示苯基)回流，并与以这种方式获得的5，10-二溴二萘并(2'：3'-3：4)(2”：3”-8：9)芘反应2小时。 By using 0.01mol equivalents of tetrakis (triphenylphosphine) palladium (0) [Pd (PPh3) 4] (wherein "Ph" represents a phenyl group) as a catalyst in xylene / 2M aqueous sodium carbonate solution, so 2mol eq. phenylboronic acid [Ph-B (OH) 2] (where "Ph" represents phenyl) reflux and in this way obtain the 5,10-dibromo-dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene 2 hours. 此后，所得混合物根据通常方法纯化，合成了用下式表示的5，10-二苯基-二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 Thereafter, the resulting mixture was purified according to a conventional method, was synthesized using 5,10-diphenyl represented by the formula - dinaphtho (2 ': 3'-3: 4) pyrene (92':: 3 "-8) . (注意，在该式中，“Ph”表示苯基)。 (Note that, in this formula, "Ph" represents phenyl).
[合成实施例3]5，10-双(苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘的合成将二萘并(2'：3'-3：4)(2”：3”-8：9)芘溶解在四氯化碳中。 [Synthesis Example 3] 5,10-bis (phenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene in Synthesis of dinaphtho (2' : 3'-3: 4) (2 ": 3" -8: 9) pyrene is dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 将混合物反应4小时，被溴化。 The mixture was reacted for 4 hours and brominated. 此后，根据常用方法纯化混合物，获得了5，10-二溴二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 Pyrene (92 ':: 3 "-8) Thereafter, the mixture was purified according to the conventional method, to obtain the 5,10-dibromo-dinaphtho (2':: 3'-3 4). 将苯基胺，碳酸钾和铜粉末加入到所获得的5，10-二溴二萘并(2'：3'-3：4)(2”：3”-8：9)芘中，以及让混合物在200℃下反应30小时。 The phenylamine, potassium carbonate and copper powder were added to the obtained 5,10-dibromo-dinaphthyl and (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene, and the mixture was reacted at 200 ℃ 30 hours. 在反应溶液用水稀释后，反应剂用氯仿洗脱。 After the reaction solution was diluted with water, eluted with chloroform reactants. 此后，所得物质根据通常方法纯化，合成了用下式表示的5，10-双(苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 Thereafter, the resultant substance is purified in accordance with conventional method, the synthesis of 5,10-bis (phenylamino) dinaphtho and represented by the following formula (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene. (注意，在该式中，“Ph”表示苯基)。 (Note that, in this formula, "Ph" represents phenyl).
[合成实施例4]5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘的合成将二萘并芘溶解在四氯化碳中。 [Synthesis Example 4] 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene dicarboxylic Synthesis of naphthalene and pyrene is dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 使混合物反应4小时，并被溴化。 The mixture was reacted for 4 hours and brominated. 此后，根据常用方法纯化混合物，获得了5，10-二溴二萘并芘。 Thereafter, the mixture was purified according to conventional methods to give 5,10-dibromo-dinaphtho pyrene. 将二苯基胺，碳酸钾和铜粉末加入到所获得的5，10-二溴二萘并(2'：3'-3：4)(2”：3”-8：9)芘中，以及让混合物在200℃下反应30小时。 The diphenylamine, potassium carbonate and copper powder were added to the obtained 5,10-dibromo-dinaphthyl and (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene, and the mixture was reacted at 200 ℃ 30 hours. 在反应溶液用水稀释后，反应剂用氯仿洗脱。 After the reaction solution was diluted with water, eluted with chloroform reactants. 此后，所得物质根据通常方法纯化，合成了用下式表示的5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 Thereafter, the resultant substance is purified in accordance with a conventional method, was synthesized by the following formula 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9 ) pyrene. (注意，在该式中，“Ph”表示苯基)。 (Note that, in this formula, "Ph" represents phenyl).
(实施例1)如下述那样制备在发光层中使用二萘并(2'：3'-3：4)(2”：3”-8：9)芘的层压型有机EL元件。 (Example 1) was prepared as described below using two light-emitting layer and naphthalene (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene laminate type organic EL element of. 即，其上形成ITO电极作为正极的玻璃基材用水、丙酮和异丙醇洗涤。 That is, an ITO electrode is formed on a glass substrate was washed with a positive electrode with water, acetone and isopropanol. 使用真空汽相淀积设备(真空度＝1×10-6托(1.3×10-4Pa)，基材温度＝室温)，在ITO电极上覆盖用作空穴迁移层的TPD，致使达到50nm的厚度。 Using a vacuum vapor deposition device (degree of vacuum = 1 × 10-6 Torr (1.3 × 10-4Pa), substrate temperature = room temperature), on the ITO electrode covering TPD as the hole transfer layer, so that to achieve the 50nm thickness. 接着，在空穴迁移层上，通过同时汽相淀积形成由TPD、二萘并(2'：3'-3：4)(2”：3”-8：9)芘和Alq(使得Alq为99分子(99mol)对1分子(1mol)的二萘并(2'：3'-3：4)(2”：3”-8：9)芘)构成的20nm厚度的发光层。 Subsequently, on the hole transport layer is formed by simultaneous vapor deposition of TPD, dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene, and Alq (Alq that 99 molecules (99 mol) to 1 molecule (1 mol) of the dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene) constituting the light-emitting layer of a thickness of 20nm. 然后，覆盖用作电子迁移层的Alq，致使在发光层上形成30nm的厚度。 Then, Alq as an electron transport layer cover, resulting in a thickness of 30nm is formed on the light emitting layer. 然后，汽相淀积用作负极的Al-Li合金(Li含量＝0.5重量％)，致使在由Alq形成的电子迁移层上形成50nm的厚度。 Then, vapor deposition is used as the negative electrode of Al-Li alloy (Li content = 0.5 wt%), resulting in a thickness of 50nm is formed on the electron transport layer is formed by the Alq. 如此制备了有机EL元件。 The thus prepared organic EL element.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为980cd/m2和峰值为600nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 980cd / m2 and a peak wavelength of 600nm for the red emission.
(实施例2)按与实施例1同样的方式制备有机EL元件，只是发光层同时通过汽相淀积二萘并(2'：3'-3：4)(2”：3”-8：9)芘，Alq和红荧烯来形成，使得Alq是94分子(94mol)和红荧烯是5分子(5mol)对1分子(1mol)的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 2) of the organic EL element prepared in the same manner as in Example 1, except the light emitting layer simultaneously by vapor deposition and dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene, Alq and rubrene be formed, so that Alq is 94 molecules (94 mol) and the rubrene is 5 molecules (5 mol) to 1 molecule (1 mol) of the dinaphtho (2 ': 3'-3: 4 ) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了其发光亮度是1500cd/m2和峰值是600nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 1500cd / m2 and wavelength of 600nm is the peak of red emission.
(实施例3)按与实施例1同样的方式制备有机EL元件，只是用5，10-二苯基-二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例1中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 3) of the organic EL element prepared in the same manner as in Example 1, except that 5,10-diphenyl - dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8 : 9) pyrene in Example 1 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了其发光亮度是1390cd/m2和峰值是630nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 1390cd / m2 and wavelength of 630nm is the peak of red emission.
(实施例4)按与实施例2同样的方式制备有机EL元件，只是用5，10-二苯基-二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例2中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 4) of the organic EL element prepared in the same manner as in Example 2, except that 5,10-diphenyl - dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8 : 9) pyrene in Example 2 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是2010cd/m2和峰值是630nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 2010cd / m2 and wavelength of 630nm is the peak of red emission.
(实施例5)按与实施例1同样的方式制备有机EL元件，只是用5，10-双(苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例1中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 5) of the organic EL element prepared in the same manner as in Example 1, except that 5,10-bis (phenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" - 8: 9) pyrene in Example 1 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的IT0电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，观测到了在有机EL元件中的红光发射。 When IT0 electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是1260cd/m2和峰值是650nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 1260cd / m2 and the peak wavelength of red light emission is 650nm.
(实施例6)按与实施例2同样的方式制备有机EL元件，只是用5，10-双(苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例2中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 6) of the organic EL element prepared in the same manner as in Example 2, except that 5,10-bis (phenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" - 8: 9) pyrene in Example 2 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是1700cd/m2和峰值是650nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 1700cd / m2 and the peak wavelength of red light emission is 650nm.
(实施例7)按与实施例1同样的方式制备有机EL元件，只是用5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例1中的二萘并(2'：3'-3：4)(2”：3-8：9)芘，以及在发光层中不使用Alq，和电子迁移层的厚度被制成为50nm。 (Example 7) of the organic EL element prepared in the same manner as in Example 1, except that 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 1 dinaphthyl in Example 9) pyrene in place of embodiment and (2 ': 3'-3: 4) (2': 3-8: 9) pyrene, and non-use of Alq, and the electron mobility in the light emitting layer, thickness of the layer is made 50nm.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在6V或6V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 6V 6V or more, the red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是650cd/m2和峰值是655nm波长的红光发射。 At an applied voltage of 10V, its observed emission luminance is 650cd / m2 and a peak wavelength of 655nm is emitted red light.
(实施例8)按与实施例1同样的方式制备有机EL元件，只是用5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例1中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 8) of the organic EL element prepared in the same manner as in Example 1, except that 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene in Example 1 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是1300cd/m2和峰值是655nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 1300cd / m2 and wavelength of 655nm is the peak of red emission.
(实施例9)按与实施例2同样的方式制备有机EL元件，只是用5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例2中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘。 (Example 9) of the organic EL element prepared in the same manner as in Example 2, except that 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene in Example 2 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是1820cd/m2和峰值是655nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed was 1820cd / m2 and wavelength of 655nm is the peak of red emission.
(实施例10)按与实施例1同样的方式制备有机EL元件，只是用5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例1中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘，以及不形成空穴迁移层，和将发光层制备成厚度50nm的空穴迁移和发光层。 (Example 10) of the organic EL element prepared in the same manner as in Example 1, except that 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene in Example 1 was used instead of dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene, and the hole transport layer is not formed, and the light emitting a hole transport layer is prepared and the light emitting layer of a thickness of 50nm.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在6V或6V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 6V 6V or more, the red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是380cd/m2和峰值是655nm波长的红光发射。 At an applied voltage of 10V, its observed emission luminance is 380cd / m2 and a peak wavelength of 655nm is emitted red light.
(实施例11)按与实施例1同样的方式制备有机EL元件，只是用5，10-双(二苯氨基)二萘并(2'：3'-3：4)(2”：3”-8：9)芘代替实施例1中的二萘并(2'：3'-3：4)(2”：3”-8：9)芘，以及不形成电子迁移层，和将发光层制备成厚度30nm的电子迁移和发光层。 (Example 11) of the organic EL element prepared in the same manner as in Example 1, except that 5,10-bis (diphenylamino) dinaphtho (2 ': 3'-3: 4) (2 ": 3" -8: 1 dinaphthyl in Example 9) pyrene in place of embodiment and (2 ': 3'-3: 4) (2 ": 3" -8: 9) pyrene, and the electron transporting layer is not formed, and a light-emitting layer preparation of a thickness of 30nm and a light emitting electron transporting layer.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在7V或7V以上的电压，观测到了在有机EL元件中的红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 7V or more 7V, red light emission was observed in the organic EL element. 在10V的外加电压下，观测到了其发光亮度是160cd/m2和峰值是630nm波长的红光发射。 At an applied voltage of 10V, its observed emission luminance is 160cd / m2 and the peak wavelength of red light emission is 630nm.
[合成实施例5]二苯并二苯并[cd，jk]芘(dibenzanthanthrene)的合成根据出版物(“Bericht”，No.76，p.329(1943))合成用下式表示的二苯并二苯并[cd，jk]芘。 Dibenzo [Synthesis Example 5] dibenzo dibenzo [cd jk,] Synthesis of pyrene (dibenzanthanthrene) represented by the following formula synthesized according to the publication ( "Bericht", No.76, p.329 (1943)) of and dibenzo [cd, jk] pyrene.
[合成实施例6]7，15-二苯基-二苯并二苯并[cd，jk]芘的合成将二苯并二苯并[cd，jk]芘溶解在四氯化碳中。 [Synthesis Example 6] 7,15- diphenyl - dibenzo dibenzo [cd, jk] Synthesis of pyrene dibenzo dibenzo [cd, jk] pyrene is dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 使混合物反应4小时，进行溴化。 The mixture was reacted for 4 hours bromination. 此后，根据常规方法纯化混合物，获得了7，15-溴-二苯并二苯并[cd，jk]芘。 Thereafter, the mixture was purified according to a conventional method, to obtain a bromo-7,15- - dibenzo dibenzo [cd, jk] pyrene. 通过使用0.01mol当量的四(三苯基膦)合钯(0)[Pd(PPh3)4](其中“Ph”表示苯基)作为催化剂，在二甲苯/2M碳酸钠水溶液中，使2mol当量的苯基硼酸[Ph-B(OH)2](其中“Ph”表示苯基)回流，并与如此获得的7，15-二溴-二苯并二苯并[cd，jk]芘反应12小时。 By using 0.01mol equivalents of tetrakis (triphenylphosphine) palladium (0) [Pd (PPh3) 4] (wherein "Ph" represents a phenyl group) as a catalyst in xylene / 2M aqueous sodium carbonate solution, so 2mol eq. phenylboronic acid [Ph-B (OH) 2] (where "Ph" represents a phenyl group) at reflux, and the thus obtained 7,15- dibromo - 12 reaction dibenzo dibenzo [cd, jk] pyrene hour. 此后，根据常用方法纯化所得混合物，合成了由下式表示的7，15-二苯基-二苯并二苯并[cd，jk]芘。 Thereafter, the resulting mixture was purified according to the conventional method, synthesized by the 7,15- diphenyl represented by the formula - dibenzo dibenzo [cd, jk] pyrene. (注意，在式中，“Ph”表示苯基。) (Note that, in the formulas, "Ph" represents a phenyl group.) [合成实施例7]7，15-双(苯氨基)二苯并二苯并[cd，jk]芘的合成将二苯并二苯并[cd，jk]芘溶解在四氯化碳中。 [Synthesis Example 7] 7,15- bis (phenylamino) dibenzo dibenzo [cd, jk] Synthesis of pyrene dibenzo dibenzo [cd, jk] pyrene is dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 使混合物反应4小时，进行溴化。 The mixture was reacted for 4 hours bromination. 此后，根据常规方法纯化混合物，获得了7，15-二溴-二苯并二苯并[cd，jk]芘。 Thereafter, the mixture was purified according to a conventional method to give 7,15- dibromo - dibenzo dibenzo [cd, jk] pyrene. 将苯基胺、碳酸钾和铜粉末加入到所获得的7，15-二溴-二苯并二苯并[cd，jk]芘中，以及让该混合物在200℃下反应30小时。 The phenylamine, potassium carbonate and copper powder were added to the obtained 7,15- dibromo - dibenzo dibenzo [cd, jk] pyrene, and the mixture was reacted at 200 ℃ 30 hours. 在反应溶液用水稀释后，反应剂用氯仿洗脱。 After the reaction solution was diluted with water, eluted with chloroform reactants. 此后，根据常用方法纯化所得物质，合成了由下式表示的7，15-双(苯氨基)二苯并二苯并[cd，jk]芘。 Thereafter, the resulting material was purified according to the usual method, and the synthesis of 7,15- bis (phenylamino) represented by the formula diphenyl-dibenzo [cd, jk] pyrene. (注意，在式中，“Ph”表示苯基。) (Note that, in the formulas, "Ph" represents a phenyl group.)
[合成实施例8]7，15-双(二苯氨基)二苯并二苯并[cd，jk]芘的合成将二苯并二苯并[cd，jk]芘溶解在四氯化碳中。 [Synthesis Example 8] 7,15- bis (diphenylamino) dibenzo dibenzo [cd, jk] Synthesis of pyrene dibenzo dibenzo [cd, jk] pyrene is dissolved in carbon tetrachloride . 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 使混合物反应4小时，进行溴化。 The mixture was reacted for 4 hours bromination. 此后，根据常规方法纯化混合物，获得了7，15-二溴-二苯并二苯并[cd，jk]芘。 Thereafter, the mixture was purified according to a conventional method to give 7,15- dibromo - dibenzo dibenzo [cd, jk] pyrene. 将二苯基胺、碳酸钾和铜粉末加入到所获得的7，15-二溴-二苯并二苯并[cd，jk]芘中，以及让该混合物在200℃下反应30小时。 The diphenylamine, potassium carbonate and copper powder were added to the obtained 7,15- dibromo - dibenzo dibenzo [cd, jk] pyrene, and the mixture was reacted at 200 ℃ 30 hours. 在反应溶液用水稀释后，反应剂用氯仿洗脱。 After the reaction solution was diluted with water, eluted with chloroform reactants. 此后，根据常用方法纯化所得物质，合成了由下式表示的7，15-双(二苯氨基)二苯并二苯并[cd，jk]芘。 Thereafter, the resulting material was purified according to the usual method, and synthesized by the following formula 7,15- bis (diphenylamino) dibenzo dibenzo [cd, jk] pyrene. (注意，在式中，“Ph”表示苯基。) (Note that, in the formulas, "Ph" represents a phenyl group.) (实施例12)如下述那样制备在发光层中使用二苯并二苯并[cd，jk]芘的层压型有机EL元件。 (Example 12) as described later was prepared using diphenyl-dibenzo light-emitting layer and [cd, jk] pyrene laminate type organic EL element. 即，其上形成ITO电极作为正极的玻璃基材用水、丙酮和异丙醇洗涤。 That is, an ITO electrode is formed on a glass substrate was washed with a positive electrode with water, acetone and isopropanol. 使用真空汽相淀积设备(真空度＝1×10-6托(1.3×10-4Pa)，基材温度＝室温)，将用作空穴迁移层的TPD覆盖在ITO电极上，致使形成50nm的厚度。 Using a vacuum vapor deposition device (degree of vacuum = 1 × 10-6 Torr (1.3 × 10-4Pa), substrate temperature = room temperature), the TPD as a hole transport layer coated on the ITO electrodes, resulting in the formation 50nm thickness of. 接着，在空穴迁移层上，通过同时汽相淀积形成由TPD、二苯并二苯并[cd，jk]芘和Alq(使得Alq为99分子(99mol)对1分子(1mol)的二苯并二苯并[cd，jk]芘)构成的20nm厚度的发光层。 Subsequently, on the hole transport layer is formed by depositing TPD, dibenzo-dibenzo [cd, jk] pyrene and Alq (Alq is 99 molecules that (99 mol) two pairs of 1 molecule (1 mol) by simultaneously vapor dibenzo-benzo [cd, jk] pyrene) constituting the light-emitting layer of a thickness of 20nm. 然后，覆盖用作电子迁移层的Alq，致使在发光层上形成30nm的厚度。 Then, Alq as an electron transport layer cover, resulting in a thickness of 30nm is formed on the light emitting layer. 然后，汽相淀积用作负极的Al-Li合金(Li含量＝0.5重量％)，致使在由Alq形成的电子迁移层上形成50nm的厚度。 Then, vapor deposition is used as the negative electrode of Al-Li alloy (Li content = 0.5 wt%), resulting in a thickness of 50nm is formed on the electron transport layer is formed by the Alq. 如此制备了有机EL元件。 The thus prepared organic EL element.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为790cd/m2和峰值为620nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 790cd / m2 and a peak wavelength of 620nm for the red emission.
(实施例13)按与实施例12相同的方式制备有机EL元件，只是发光层通过同时汽相淀积二苯并二苯并[cd，jk]芘、Alq和红荧烯来形成，使得Alq是94分子(94mol)和红荧烯是5分子(5mol)对1分子(1mol)的二苯并二苯并[cd，jk]芘。 (Example 13) An organic EL device was prepared in the same manner as in Example 12, except the light emitting layer is formed by simultaneous vapor deposition dibenzo dibenzo [cd, jk] pyrene, Alq and rubrene be formed, so that Alq 94 molecules (94 mol) and the rubrene is 5 molecules (5 mol) to 1 molecule (1 mol) of dibenzo-dibenzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1380cd/m2和峰值为620nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1380cd / m2 and a peak wavelength of 620nm for the red emission.
(实施例14)按与实施例12相同的方式制备有机EL元件，只是用7，15-二苯基-二苯并二苯并[cd，jk]芘代替实施例12中的二苯并二苯并[cd，jk]芘。 (Example 14) according to the organic EL element prepared in the same manner as Example 12, except that 7,15- diphenyl - dibenzo dibenzo-12 in Example dibenzo [cd, jk] pyrene was used instead of two and benzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1450cd/m2和峰值为650nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1450cd / m2 and a peak wavelength of 650nm for the red emission.
(实施例15)按照与实施例13相同的方式制备有机EL元件，只是用7，15-二苯基-二苯并二苯并[cd，jk]芘代替实施例13中的二苯并二苯并[cd，jk]芘。 (Example 15) An organic EL element was prepared in the same manner as in Example 13, except that 7,15- diphenyl - dibenzo dibenzo Example 13 dibenzo [cd, jk] pyrene was used instead of two and benzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为2240cd/m2和峰值为650nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 2240cd / m2 and a peak wavelength of 650nm for the red emission.
(实施例16)按与实施例12相同的方式制备有机EL元件，只是用7，15-双(苯氨基)-二苯并二苯并[cd，jk]芘代替实施例12中的二苯并二苯并[cd，jk]芘。 (Example 16) according to the same manner as in Example 12 An organic EL device was prepared, except that 7,15- bis (phenylamino) - dibenzo dibenzo [cd, jk] pyrene in place of diphenyl Example 12 and dibenzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1060cd/m2和峰值为660nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1060cd / m2 and a peak wavelength of 660nm for the red emission.
(实施例17)按照与实施例13相同的方式制备有机EL元件，只是用7，15-双(苯氨基)-二苯并二苯并[cd，jk]芘代替实施例13中的二苯并二苯并[cd，jk]芘。 (Example 17) An organic EL element was prepared in the same manner as in Example 13, except that 7,15- bis (phenylamino) - dibenzo dibenzo Example 13 dibenzo [cd, jk] pyrene was used instead of and dibenzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1410cd/m2和峰值为660nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1410cd / m2 and a peak wavelength of 660nm for the red emission.
(实施例18)按与实施例12相同的方式制备有机EL元件，只是用7，15-双(二苯氨基)-二苯并二苯并[cd，jk]芘代替实施例12中的二苯并二苯并[cd，jk]芘，在发光层中不使用Alq，以及电子迁移层的厚度被制成为50nm。 (Example 18) according to the organic EL element prepared in the same manner as Example 12, except that 7,15- bis (diphenylamino) - dibenzo dibenzo [cd, jk] pyrene in Example II instead of the embodiment 12 dibenzo-benzo [cd, jk] pyrene, Alq is not used in the light emitting layer, and the thickness of the electron transport layer is made 50nm.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在6V或6V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 6V 6V or more is observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为550cd/m2和峰值为670nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 550cd / m2 and a peak wavelength of 670nm for the red emission.
(实施例19)按照与实施例12相同的方式制备有机EL元件，只是用7，15-双(二苯氨基)-二苯并二苯并[cd，jk]芘代替实施例12中的二苯并二苯并[cd，jk]芘。 (Example 19) An organic EL element is prepared in the same manner as Example 12, except that 7,15- bis (diphenylamino) - dibenzo dibenzo [cd, jk] pyrene in Example II instead of the embodiment 12 dibenzo-benzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1110cd/m2和峰值为670nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1110cd / m2 and a peak wavelength of 670nm for the red emission.
(实施例20)按照与实施例13相同的方式制备有机EL元件，只是用7，15-双(二苯氨基)-二苯并二苯并[cd，jk]芘代替实施例13中的二苯并二苯并[cd，jk]芘。 (Example 20) An organic EL element was prepared in the same manner as in Example 13, except that 7,15- bis (diphenylamino) - dibenzo dibenzo Example 13 [cd, jk] pyrene was used instead of di dibenzo-benzo [cd, jk] pyrene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1410cd/m2和峰值为670nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1410cd / m2 and a peak wavelength of 670nm for the red emission.
(实施例21)按照与实施例12相同的方式制备有机EL元件，只是用7，15-双(二苯氨基)-二苯并二苯并[cd，jk]芘代替实施例12中的二苯并二苯并[cd，jk]芘，不形成空穴迁移层，和发光层被制备成厚度50nm的空穴迁移和发光层。 (Example 21) An organic EL element is prepared in the same manner as Example 12, except that 7,15- bis (diphenylamino) - dibenzo dibenzo Example 12 [cd, jk] pyrene was used instead of di dibenzo-benzo [cd, jk] pyrene, a hole transport layer is not formed, and the light emitting layer thickness of the hole transport and light emitting layer is prepared to 50nm.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在6V或6V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 6V 6V or more is observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为300cd/m2和峰值为670nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 300cd / m2 and a peak wavelength of 670nm for the red emission.
(实施例22)按照与实施例12相同的方式制备有机EL元件，只是用7，15-二苯基-二苯并二苯并[cd，jk]芘代替实施例12中的二苯并二苯并[cd，jk]芘，不形成电子迁移层，和发光层被制备成厚度30nm的电子迁移和发光层。 (Example 22) An organic EL element is prepared in the same manner as Example 12, except that 7,15- diphenyl - dibenzo dibenzo dibenzo Example 12 [cd, jk] pyrene was used instead of two and benzo [cd, jk] pyrene, and the electron transport light-emitting layer an electron transport layer, and the light emitting layer to a thickness of 30nm are prepared is not formed.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在7V或7V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 7V or more 7V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为190cd/m2和峰值为650nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 190cd / m2 and the peak wavelength of 650nm red emission.
[合成实施例9]6，13-二苯基-并四苯基并四苯的合成将并四苯基并四苯(Chemical Abstract Service(CAS)RegistryNumber 180-50-1)溶解在四氯化碳中。 [Synthesis Example 9] 6,13-diphenyl - Synthesis and tetraphenyl naphthacene will and tetraphenyl naphthacene (Chemical Abstract Service (CAS) RegistryNumber 180-50-1) was dissolved in tetrachloride carbon. 在冷却反应混合物的同时，将1mol当量的溴加入到其中。 While cooling the reaction mixture, 1mol equivalent of bromine was added thereto. 让混合物反应4小时，进行溴化。 The mixture was reacted for 4 hours, bromination. 此后，根据常用方法纯化混合物，和获得了6，13-二溴并四苯基并四苯。 Thereafter, the mixture was purified according to the usual method, and 6,13-dibromo obtained and tetraphenyl naphthacene. 通过使用0.01mol当量的四(三苯基膦)合钯(0)[Pd(PPh3)4](其中“Ph”表示苯基)作为催化剂，在二甲苯/2M碳酸钠水溶液中，使2mol当量的苯基硼酸[Ph-B(OH)2](其中“Ph”表示苯基)回流，并与如此获得的6，13-二溴并四苯基并四苯反应12小时。 By using 0.01mol equivalents of tetrakis (triphenylphosphine) palladium (0) [Pd (PPh3) 4] (wherein "Ph" represents a phenyl group) as a catalyst in xylene / 2M aqueous sodium carbonate solution, so 2mol eq. phenylboronic acid [Ph-B (OH) 2] (where "Ph" represents a phenyl group) at reflux, and the thus obtained 6,13-dibromo-tetraphenyl naphthacene, and 12 hours. 此后，根据常用方法纯化所得混合物，和合成了用下式表示的6，13-二苯基-并四苯基并四苯。 Thereafter, the resulting mixture was purified according to the usual method, and 6,13-diphenyl synthesized represented by the following formula - and tetraphenyl naphthacene. (注意，在该式中，“Ph”表示苯基。) (Note that, in this formula, "Ph" represents a phenyl group.) [合成实施例10]6，13-双(苯氨基)并四苯基并四苯的合成将并四苯基并四苯溶解在四氯化碳中。 Synthesis of [Synthesis Example 10] 6,13-bis (phenylamino) tetracene and tetraphenylphosphonium tetraphenyl will tetracene and dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 使混合物反应4小时，进行溴化。 The mixture was reacted for 4 hours bromination. 此后，根据常规方法纯化混合物，获得了6，13-二溴-并四苯基并四苯。 Thereafter, the mixture was purified according to conventional methods to give the 6,13-dibromo - and tetraphenyl naphthacene. 将苯基胺、碳酸钾和铜粉末加入到所获得的6，13-二溴-并四苯基并四苯中，以及让该混合物在200℃下反应30小时。 The phenylamine, potassium carbonate and copper powder were added to the obtained 6,13-dibromo - and tetraphenyl naphthacene, and in the mixture was reacted at 200 ℃ 30 hours. 在反应溶液用水稀释后，反应剂用氯仿洗脱。 After the reaction solution was diluted with water, eluted with chloroform reactants. 此后，根据常用方法纯化所得物质，合成了由下式表示的6，13-双(苯氨基)并四苯基并四苯。 Thereafter, according to the conventional method was purified material synthesized by 6,13-bis (phenylamino) represented by the formula and tetraphenyl naphthacene. (注意，在式中，“Ph”表示苯基。) (Note that, in the formulas, "Ph" represents a phenyl group.)
[合成实施例11]6，13-双(二苯氨基)并四苯基并四苯的合成将并四苯基并四苯溶解在四氯化碳中。 [Synthesis Example 11] 6,13-bis (diphenylamino) Synthesis and tetraphenyl naphthacene will tetraphenyl tetracene and dissolved in carbon tetrachloride. 在冷却所得混合物的同时，将1mol当量的溴加入到其中。 While cooling the resulting mixture, the bromine was added 1mol equivalent thereto. 使混合物反应4小时，进行溴化。 The mixture was reacted for 4 hours bromination. 此后，根据常规方法纯化混合物，获得了6，13-二溴-并四苯基并四苯。 Thereafter, the mixture was purified according to conventional methods to give the 6,13-dibromo - and tetraphenyl naphthacene. 将二苯基胺、碳酸钾和铜粉末加入到所获得的6，13-二溴-并四苯基并四苯中，以及让该混合物在200℃下反应30小时。 The diphenylamine, potassium carbonate and copper powder were added to the obtained 6,13-dibromo - and tetraphenyl naphthacene, and in the mixture was reacted at 200 ℃ 30 hours. 在反应溶液用水稀释后，反应剂用氯仿洗脱。 After the reaction solution was diluted with water, eluted with chloroform reactants. 此后，根据常用方法纯化所得物质，合成了由下式表示的6，13-双(二苯氨基)并四苯基并四苯。 Thereafter, according to the conventional method was purified material was synthesized by the formula 6,13-bis (diphenylamino) and tetraphenyl naphthacene. (注意，在式中，“Ph”表示苯基。) (Note that, in the formulas, "Ph" represents a phenyl group.) (实施例23)如下述那样制备在发光层中使用并四苯基并四苯的层压型有机EL元件。 (Example 23) as described later was prepared using a laminate type organic EL device and tetraphenyl naphthacene in the emission layer. 即，其上形成ITO电极作为正极的玻璃基材用水、丙酮和异丙醇洗涤。 That is, an ITO electrode is formed on a glass substrate was washed with a positive electrode with water, acetone and isopropanol. 使用真空汽相淀积设备(真空度＝1×10-6托(1.3×10-4Pa)，基材温度＝室温)，将用作空穴迁移层的TPD覆盖在ITO电极上，以便形成50nm的厚度。 Using a vacuum vapor deposition device (degree of vacuum = 1 × 10-6 Torr (1.3 × 10-4Pa), substrate temperature = room temperature), the TPD as a hole transport layer coated on the ITO electrode, to form a 50nm thickness of. 接着，在空穴迁移层上，通过同时汽相淀积形成由TPD、并四苯基并四苯和Alq(使得Alq为99分子(99mol)对1分子(1mol)的并四苯基并四苯)构成的20nm厚度的发光层。 Subsequently, on the hole transport layer is formed by simultaneous vapor deposition of TPD, and tetraphenyl naphthacene, and Alq (Alq is 99 molecules that (99 mol) to 1 molecule (1 mol) and tetraphenyl tetracene benzene) constituting the light-emitting layer of a thickness of 20nm. 然后，覆盖用作电子迁移层的Alq，致使在发光层上形成30nm的厚度。 Then, Alq as an electron transport layer cover, resulting in a thickness of 30nm is formed on the light emitting layer. 然后，汽相淀积用作负极的Al-Li合金(Li含量＝0.5重量％)，以便在由Alq形成的电子迁移层上形成50nm的厚度。 Then, vapor deposition is used as the negative electrode of Al-Li alloy (Li content = 0.5 wt%) to a thickness of 50nm is formed on the electron transport layer is formed by the Alq. 如此制备了有机EL元件。 The thus prepared organic EL element.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为820cd/m2和峰值为600nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 820cd / m2 and a peak wavelength of 600nm for the red emission.
(实施例24)按照与实施例23相同的方式制备有机EL元件，只是发光层通过同时汽相淀积并四苯基并四苯、Alq和红荧烯来形成，使得Alq是94分子(94mol)和红荧烯是5分子(5mol)对1分子(1mol)的并四苯基并四苯。 (Example 24) An organic EL element prepared in the same manner as in Example 23, except the light emitting layer is formed by simultaneous vapor deposition and tetraphenyl tetracene, Alq and rubrene be formed, so that Alq is 94 molecules (94 mol ) and rubrene is 5 molecules (5 mol) to 1 molecule (1 mol) and tetraphenyl naphthacene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1400cd/m2和峰值为600nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1400cd / m2 and a peak wavelength of 600nm for the red emission.
(实施例25)按照与实施例23相同的方式制备有机EL元件，只是用6，13-二苯基-并四苯基并四苯代替实施例23中的并四苯基并四苯。 (Example 25) An organic EL element prepared in the same manner as in Example 23, except that 6,13-diphenyl - Example 23 and tetraphenyl naphthacene and tetraphenyl naphthacene used instead.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1500cd/m2和峰值为630nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1500cd / m2 and a peak wavelength of 630nm for the red emission.
(实施例26)按照与实施例24相同的方式制备有机EL元件，只是用6，13-二苯基-并四苯基并四苯代替实施例24中的并四苯基并四苯。 (Example 26) An organic EL element was prepared in the same manner as in Example 24, except that 6,13-diphenyl - Examples 24 and tetraphenylphosphonium tetraphenyl tetracene and tetracene used instead.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为2300cd/m2和峰值为630nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 2300cd / m2 and a peak wavelength of 630nm for the red emission.
(实施例27)按照与实施例23相同的方式制备有机EL元件，只是用6，13-双(苯氨基)-并四苯基并四苯代替实施例23中的并四苯基并四苯。 The organic EL element (Example 27) was prepared in the same manner as in Example 23, except that 6,13-bis (phenylamino) - Example 23 and instead of tetraphenyl naphthacene embodiment and tetraphenyl naphthacene .
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1100cd/m2和峰值为650nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1100cd / m2 and a peak wavelength of 650nm for the red emission.
(实施例28)按照与实施例24相同的方式制备有机EL元件，只是用6，13-双(苯氨基)-并四苯基并四苯代替实施例24中的并四苯基并四苯。 (Example 28) An organic EL element was prepared in the same manner as in Example 24, except that 6,13-bis (phenylamino) - Example 24 and tetraphenyl naphthacene and tetraphenyl naphthacene instead of embodiment .
(实施例29)按照与实施例23相同的方式制备有机EL元件，只是用6，13-双(二苯氨基)-并四苯基并四苯代替实施例23中的并四苯基并四苯，以及在发光层中不使用Alq，和电子迁移层的厚度被制成50nm。 (Example 29) An organic EL element prepared in the same manner as in Example 23, except that 6,13-bis (diphenylamino) - Example 23 and instead of tetraphenyl naphthacene embodiment and four-tetraphenyl benzene, and the thickness of Alq is not used, the electron transport layer and the light emitting layer is made to 50nm.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为600cd/m2和峰值为655nm波长的红光发射。 At an applied voltage of 10V, the emission brightness observed 600cd / m2 and a peak wavelength of 655nm for the red emission.
(实施例30)按照与实施例23相同的方式制备有机EL元件，只是用6，13-双(二苯氨基)-并四苯基并四苯代替实施例23中的并四苯基并四苯。 (Example 30) In the same manner as in Example 23 An organic EL device was prepared, except that 6,13-bis (diphenylamino) - Example 23 and tetraphenyl naphthacene instead of the embodiment and the four-tetraphenyl benzene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1150cd/m2和峰值为655nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1150cd / m2 and a peak wavelength of 655nm for the red emission.
(实施例31)按照与实施例24相同的方式制备有机EL元件，只是用6，13-双(二苯氨基)-并四苯基并四苯代替实施例24中的并四苯基并四苯。 (Example 31) An organic EL element was prepared in the same manner as in Example 24, except that 6,13-bis (diphenylamino) - and tetraphenyl naphthacene instead of the embodiment 24 and embodiment four-tetraphenyl benzene.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在5V或5V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 5V or above 5V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为1450cd/m2和峰值为655nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed was 1450cd / m2 and a peak wavelength of 655nm for the red emission.
(实施例32)按照与实施例23相同的方式制备有机EL元件，只是用6，13-双(二苯氨基)-并四苯基并四苯代替实施例23中的并四苯基并四苯，以及不形成空穴迁移层，和发光层被制备成厚度50nm的空穴迁移和发光层。 (Example 32) An organic EL element prepared in the same manner as in Example 23, except that 6,13-bis (diphenylamino) - Example 23 and instead of tetraphenyl naphthacene embodiment and four-tetraphenyl benzene, and the hole transport layer is not formed, are prepared and the light emitting layer to a thickness of 50nm and a hole transport light emitting layer.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在6V或6V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 6V 6V or more is observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为320cd/m2和峰值为655nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 320cd / m2 and a peak wavelength of 655nm for the red emission.
(实施例33)按照与实施例23相同的方式制备有机EL元件，只是用6，13-双(二苯氨基)-并四苯基并四苯代替实施例23中的并四苯基并四苯，以及不形成电子迁移层，和发光层被制备成厚度30nm的电子迁移和发光层。 (Example 33) was prepared in accordance with the embodiment of the organic EL element 23 in the same manner, except that 6,13-bis (diphenylamino) - Example 23 and instead of tetraphenyl naphthacene embodiment and four-tetraphenyl benzene, and the electron transporting layer is not formed, and the light emitting layer of 30nm thickness and the electron transport light-emitting layer was prepared.
当将电压施加于所制备的有机EL元件的ITO电极(正极)和Al-Li合金(负极)时，在7V或7V以上的电压，在有机EL元件中观测到了红光发射。 When the ITO electrode of the organic EL element applying a voltage to the preparation of (positive electrode) and Al-Li alloy (negative electrode), a voltage of 7V or more 7V, observed in the organic EL element to emit red light. 在10V的外加电压下，观测到了发光亮度为220cd/m2和峰值为630nm波长的红光发射。 At an applied voltage of 10V, the emission luminance was observed 220cd / m2 and a peak wavelength of 630nm for the red emission.
根据本发明，提供了克服上述现有技术缺陷和具有高红光色纯度和优异的发光效率、发光亮度等和适用于有机EL元件的稠合八环芳族化合物，使用该稠合八环芳族化合物和具有高红光色纯度和优异的发光效率、发光亮度等的有机EL元件，以及高性能的和利用该有机EL元件的有机EL显示器。 According to the present invention, there is provided a compound overcome the above drawbacks of prior art and having a high red color purity and excellent in emission efficiency, emission luminance, etc., and condensed eight-ring aromatic compound suitable for an organic EL element using the condensed eight-ring aromatic and an organic EL element having high color purity of red light and excellent light emission efficiency, emission luminance and the like, as well as performance and utilization of the organic EL element organic EL display.
1.由以下结构式(1)-(3)中任一个表示的稠合八环芳族化合物，结构式(1) Condensed eight-ring aromatic compound of formula (1) (3) represents any of - 1 by the following formula (1) 结构式(1)中，R1-R8和R10-R17是氢原子且R9和R18是芳基，芳氨基或二芳氨基；结构式(2) Of formula (1), R1-R8 and R10-R17 are hydrogen atom and R9 and R18 are aryl, arylamino or diarylamino; structural formula (2) 结构式(2)中，R1-R6，R8-R14和R16是氢原子且R7和R15是芳基，芳氨基或二芳氨基；结构式(3) Structural formula (2), R1-R6, R8-R14 and R16 are hydrogen atoms and R7 and R15 is aryl, arylamino or diarylamino; of formula (3) 结构式(3)中R1-R5，R7-R12和R14是氢原子且R6和R13是芳基，芳氨基或二芳氨基。 Structural formula (3), R1-R5, R7-R12 and R14 are hydrogen atoms and R6 and R13 are aryl, arylamino or diarylamino.
2.根据权利要求1的稠合八环芳族化合物，其中在结构式(1)中，R9和R18选自苯基、苯氨基和二苯氨基，和在结构式(2)中，R7和R15选自苯基，苯氨基，和二苯氨基，或者在结构式(3)中，R6和R13选自苯基、苯氨基和二苯氨基。 According to claim 1 is condensed eight-ring aromatic compound together, wherein in the formula (1), R9 and R18 are selected from phenyl, phenylamino and diphenylamino, and in the formula (2), R7 and R15 is selected from since phenyl groups, phenylamino, and diphenylamino, or the formula (3), R6 and R13 is selected from phenyl, phenylamino, and diphenylamino.
3.包括在正极和负极之间含有发光层的有机薄膜层的有机电致发光元件，以及该有机薄膜层含有稠合八环芳族化合物，其中稠合八环芳族化合物用以下结构式(1)-(3)中的任一个表示：结构式(1) 3. The organic thin film layer comprises between positive and negative electrodes of the light emitting layer containing the organic electroluminescence element, and the organic thin film layer contains a condensed eight-ring aromatic compound, wherein the condensed eight-ring aromatic compounds by the following structural formula (1 ) - any one of (3) represents: the structure of formula (1) 结构式(1)中R1-R18全是氢原子，或者R1-R8，R10-R17是氢原子且R9和R18是芳基，芳氨基或二芳氨基；结构式(2) Of formula (1), R1-R18 are all hydrogen atom, or R1-R8, R10-R17 is a hydrogen atom and R9 and R18 are aryl, arylamino or diarylamino; structural formula (2) 结构式(2)中R1-R16全是氢原子，或者R1-R6，R8-R14和R16是氢原子且R7和R15是芳基，芳氨基或二芳氨基；结构式(3) Structural formula (2), R1-R16 are all hydrogen atom, or R1-R6, R8-R14 and R16 are hydrogen atoms and R7 and R15 is aryl, arylamino or diarylamino; of formula (3) 结构式(3)中R1-R5，R7-R12和R14是氢原子且R6和R13是芳基，芳氨基或二芳氨基。 Structural formula (3), R1-R5, R7-R12 and R14 are hydrogen atoms and R6 and R13 are aryl, arylamino or diarylamino.
4.根据权利要求3的有机电致发光元件，其中发光层含有所述的稠合八环芳族化合物。 According to claim 3 organic electroluminescent element, wherein the light emitting layer contains a condensed eight-ring aromatic compound according to.
5.根据权利要求3的有机电致发光元件，其中有机薄膜层具有电子迁移层，和电子迁移层含有所述的稠合八环芳族化合物。 According to Claim 3, organic electroluminescent element, wherein the organic thin film layer has an electron transport layer, and an electron transport layer comprises the condensed eight-ring aromatic compound.
6.根据权利要求3的有机电致发光元件，其中有机薄膜层具有空穴迁移层，和该空穴迁移层含有所述的稠合八环芳族化合物。 According to Claim 3 organic electroluminescent device wherein an organic thin film layer has a hole transporting layer and the hole transport layer comprises the condensed eight-ring aromatic compound.
7.根据权利要求3的有机电致发光元件，其中在结构式(1)中，R9和R18选自苯基、苯氨基和二苯氨基，和在结构式(2)中，R7和R15选自苯基，苯氨基，和二苯氨基，或者在结构式(3)中，R6和R13选自苯基、苯氨基和二苯氨基。 According to claim 3 has the organic electroluminescent device, wherein in the formula (1), R9 and R18 are selected from phenyl, phenylamino and diphenylamino, and in the formula (2), R7 and R15 are selected from benzene group, phenylamino, and diphenylamino, or the formula (3), R6 is and R13 is selected from phenyl, phenylamino, and diphenylamino.
8.根据权利要求3的有机电致发光元件，其中发光层含有主体化合物，它的光吸收波长是在稠合八环芳族化合物的短波长侧，和它的发光波长是在稠合八环芳族化合物的光吸收波长的附近。 According to Claim 3, organic electroluminescent element, wherein the light emitting layer contains a host compound whose light absorption wavelength is on the short wavelength side of the condensed eight-ring aromatic compound, and its emission wavelength is condensed eight-ring aromatics light near the absorption wavelength.
9.根据权利要求3的有机电致发光元件，其中发光层含有n种的主体化合物，其中n表示1或1以上的整数，以及如果n种的主体化合物是第一种主体化合物，第二种主体化合物，…，第(n-1)种主体化合物，和依次来自具有最短光吸收波长的主体化合物的第n种主体化合物，那么第一种主体化合物的发光波长是在第二种主体化合物的光吸收波长的附近，第二种主体化合物的发光波长是在第三种主体化合物的光吸收波长的附近，…，第(n-1)种主体化合物的发光波长是在第n种主体化合物的光吸收波长的附近，和第n种主体化合物的发光波长是在稠合八环芳族化合物的光吸收波长的附近。 9. The organic electroluminescent element, wherein the light emitting layer contains n types of host compounds, wherein n represents an integer of 1 or more, and if the n types of host compounds are a first host compound, according to claim 3 the second host compound, ..., the (n-1) types of host compound, and the n th order from the host compound with the shortest light absorption wavelength of the host compound, then the emission wavelength of the first host compound is in a second host compound light emission wavelength near the absorption wavelength, a second host compound is in a vicinity of the light absorption wavelength of a third host compound, and ..., the emission wavelength of the (n-1) is the first kind of the host compound in the n types of host compounds nearby, and the n th emission wavelength of the host compound in the light absorption wavelength is in the vicinity of the light condensed eight-ring aromatic compound absorption wavelength.
10.根据权利要求8或9的有机电致发光元件，其中主体化合物的含量是90mol或90mol以上，相对于1mol的稠合八环芳族化合物。 10. It according to claim 8 or 9, the organic electroluminescence device, wherein the host compound content is 90mol 90mol or more, with respect to 1mol condensed eight-ring aromatic compound.
11.根据权利要求9的有机电致发光元件，其中发光波长在稠合八环芳族化合物的吸收波长附近的n种主体化合物之一的含量是1mol或1mol以上，相对于1mol的稠合八环芳族化合物。 According to claim 9 organic electroluminescent device, wherein the content of one of the emission wavelength near the absorption wavelength of the condensed eight-ring aromatic compound are n types of host compounds 1mol 1mol or more, with respect to 1mol fused eight ring aromatics.
12.根据权利要求8或9的有机电致发光元件，其中主体化合物是用以下结构式表示的铝喹啉配合物： According to claim 8 or 9 with an aluminum quinoline complex organic electroluminescent element, wherein the body is a compound represented by the following structural formula:
13.根据权利要求9的有机电致发光元件，其中主体化合物是用以下结构式表示的铝喹啉配合物和用以下结构式表示的红荧烯： According to claim 9 with an aluminum quinoline organic electroluminescent element, wherein the body is a compound represented by the following structural formula complexes and rubrene represented by the following structural formula:
14.根据权利要求9的有机电致发光元件，其中发光层的厚度是5-50nm。 According to claim 9 is an organic electroluminescent element, wherein the light emitting layer is a thickness of 5-50nm.
15.根据权利要求9的有机电致发光元件，其中发射波长是600-650nm。 15.9 the organic electroluminescent element, wherein the emission wavelength is 600-650nm claims.
16.包括根据权利要求3的有机电致发光元件的有机电致发光显示器。 16. 3 comprising the organic electroluminescent element is an organic electroluminescent display according to claim.
17.根据权利要求16的有机电致发光显示器，其中有机电致发光显示器是无源矩阵板和有源矩阵板的一种，并且使用权利要求7的有机电致发光元件来发射红光。 According to claim 16, an organic electroluminescent display wherein the organic electroluminescent display is a passive matrix panel and an active matrix panel, as claimed in claim 7, and using the organic electroluminescent element to emit red light.
CNB021087091A 2001-08-29 2002-03-29 Condensed octocyclic aromatic compound, organic electroluminescent element and organic electroluminescent display CN1239446C (en)
JP2001259684 2001-08-29
JP2001361504A JP4024526B2 (en) 2001-08-29 2001-11-27 Fused octacyclic aromatic compound and organic EL device and organic EL display using the same
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CN1239446C true CN1239446C (en) 2006-02-01
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CNB021087091A CN1239446C (en) 2001-08-29 2002-03-29 Condensed octocyclic aromatic compound, organic electroluminescent element and organic electroluminescent display
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