Patent ID: 7256245
Filing Date: 2007-08-14
Classification: C08G,C09K,H01L,Y10T

Abstract:
1. A polymer fluorescent substance which emits fluorescence in solid state, has a number-average molecular weight in terms of polystyrene of 1×10 4 to 1×10 8 , and has each of the repeating units represented by repeating units of the formulae (2), (3) and (4): wherein in the formula (2), Ar 2 is an arylene group having 6 to 60 carbon atoms contained in the main chain portion or a divalent heterocyclic compound group having 3 to 60 carbon atoms contained in the main chain portion, X represents an oxygen atom or sulfur atom, R 3 represents a group selected from the group consisting of linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, mono, di or trialkylsilyl groups having 1 to 60 carbon atoms, aryl groups having 6 to 60 carbon atoms, arylalkyl groups having 7 to 60 carbon atoms and heterocyclic compound groups having 3 to 60 carbon atoms, and the aryl group, arylalkyl group and heterocyclic group may also have a substituent, the symbol k is an integer from 1 to 4, each of R 4 and R 5 independently represents a group selected from the group consisting of a hydrogen atom, linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group and heterocyclic group may also have a substituent, the symbol m is 0 or 1, Ar 2 may have a substituent selected from the group consisting of linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, mono, di or trialkylsilyl groups having 1 to 60 carbon atoms, mono or dialkylamino groups having 1 to 40 carbon atoms, aryl groups having 6 to 60 carbon atoms, arylalkyl groups having 7 to 60 carbon atoms, arylamino groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group, arylalkyl group, arylamino group and heterocyclic group may further have a substituent, substituents may be the same or different when Ar 2 has a plurality of substituents, one or more carbon atoms of the substituent on Ar 2 may be substituted with an oxygen atom or sulfur atom, and one or more hydrogen atoms of the substituent on Ar 2 may be substituted with a fluorine atom, when in the formula (3), Ar 3 is an arylene group having 6 to 60 carbon atoms contained in the main chain portion or a heterocyclic compound group having 3 to 60 carbon atoms contained in the main chain portion, Ar 4 is an aryl group having 6 to 60 carbon atoms or a heterocyclic compound group having 3 to 60 carbon atoms, and may also have a substituent selected from the group consisting of linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, alkoxy groups having a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, alkylthio groups having a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, mono, di or trialkylsilyl groups having 1 to 60 carbon atoms, mono or dialkylamino groups having 1 to 40 carbon atoms, aryl groups having 6 to 60 carbon atoms, aryloxy groups having 6 to 60 carbon atoms, arylalkyl groups having 7 to 60 carbon atoms, arylalkoxy groups having 7 to 60 carbon atoms, arylalkenyl groups having 8 to 60 carbon atoms, arylalkynyl groups having 8 to 60 carbon atoms, arylamino groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group, aryloxy group, arylalkyl group, arylalkoxy group, arylalkenyl group, arylalkynyl group, arylamino group and heterocyclic group may further have a substituent, the symbol n is an integer from 1 to 4, each of R 6 and R 7 independently represents a group selected from the group consisting of a hydrogen atom, linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group and heterocyclic group may also have a substituent, the symbol p is 0 or 1, Ar 3 may have a substituent selected from the group consisting of linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, alkoxy groups having a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, alkylthio groups having a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, mono, di or trialkylsilyl groups having 1 to 60 carbon atoms, mono or dialkylamino groups having 1 to 40 carbon atoms, aryloxy groups having 6 to 60 carbon atoms, arylalkyl groups having 7 to 60 carbon atoms, arylalkoxy groups having 7 to 60 carbon atoms, arylamino groups having 6 to 60 carbon atoms, and a cyano group, and the aryloxy group, arylalkyl group, arylalkoxy group, arylamino group may further have a substituent, substituents may be the same or different when Ar 3 has a plurality of substituents, one or more carbon atoms of the substituents on Ar 3 may be substituted with an oxygen atom or sulfur atom, and one or more hydrogen atoms of the substituents on Ar 3 maybe substituted with a fluorine atom, wherein in the formula (4), Ar 5 is an arylene group having 6 to 60 carbon atoms contained in the main chain portion or a divalent heterocyclic compound group having 3 to 60 carbon atoms contained in the main chain portion, R 8 represents a group selected from the group consisting of linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, mono, di or trialkylsilyl groups having 1 to 60 carbon atoms, mono or dialkylamino groups having 1 to 40 carbon atoms, saturated heterocyclic compound groups having 3 to 60 carbon atoms and arylalkyl groups having 7 to 60 carbon atoms, and the arylalkyl group may further have a substituent, the symbol q is an integer from 1 to 4, each of R 9 and R 10 independently represents a group selected from the group consisting of a hydrogen atom, linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group and heterocyclic group may also have a substituent, the symbol r is 0 or 1, Ar 5 may have a substituent selected from the group consisting of alkoxy groups having a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, alkylthio groups having a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, aryl groups having 6 to 60 carbon atoms, aryloxy groups having 6 to 60 carbon atoms, arylalkoxy groups having 7 to 60 carbon atoms, arylamino groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group, aryloxy group, arylalkoxy group, arylamino group and heterocyclic group may further have a substituent, substituents may be the same or different when Ar 5 has a plurality of substituents, one or more carbon atoms of the substituents on Ar 5 may be substituted with an oxygen atom or sulfur atom, and one or more hydrogen atoms of the substituents on Ar 5 may be substituted with a fluorine atom, wherein, the total amount of repeating units of the formulae (2), (3) and (4) is 50 mol % or more based on all repeating units, and the amount of repeating units of formula (2) is 0.1 mol % to 30 mol %, the amount of repeating units of formula (3) is 29.9 mol % to 70 mol % and the amount of repeating units of formula (4) is 29.9 mol % to 70 mol %, based on the total amount of repeating units of the formulae (2), (3) and (4).