Patent ID: 11930704
Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  H | IPC H

Claim 0:
1. An organic electroluminescent device comprising a first electrode, a second electrode facing the first electrode, a light-emitting layer between the first electrode and the second electrode, and an electron transport layer and an electron buffer layer between the light-emitting layer and the second electrode, wherein the electron buffer layer comprises a compound represented by any one of the following formulae 5 to 8, and the electron transport layer comprises a compound represented by the following formula 2:, wherein
Y1 represents N or CR13;
Ar1 and Ar2, Ar5 to Ar9, and Ar13 to A19, each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C50)aryl, a substituted or unsubstituted (3- to 50-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, or may be linked to an adjacent substituent to form a substituted or unsubstituted, mono- or polycyclic, (C3-C30) alicyclic, aromatic, or a combination of alicyclic and aromatic ring, whose carbon atom(s) may be replaced with at least one heteroatom selected from nitrogen, oxygen, and sulfur;
L represents a single bond, a substituted or unsubstituted (C6-C50)arylene, or a substituted or unsubstituted (5- to 50-membered)heteroarylene; and
X represents CRaRb, NRc, O, or S, wherein Ra, Rb, and Rc are each independently identical to the definition of Ar1;
K represents CRd or N, wherein Rd is identical to the definition of Ar1;
M represents O or S;
A1 represents —N═, —NR7—, —O—, or —S—;
B1 represents —N═, —NR8—, —O—, or —S—, with a proviso that B1 is —NR8—, —O—, or —S— when A1 is —N═, and B1 is —N═, —O—, or —S— when A1 is —NR7—;
R1 represents a substituted or unsubstituted (C6-C30)aryl wherein the substituents of the (C6-30)aryl are at least one selected from the group consisting of deuterium, a (C1-30)alkyl, a (C6-30)aryl(C1-C30)alkyl and a (C1-C30)alkyl(C6-30)aryl;
R2 to R4, R7, and R8 each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, or may be linked to an adjacent substituent to form a substituted or unsubstituted, mono- or polycyclic, (C3-C30) alicyclic, aromatic, or a combination of alicyclic and aromatic ring, whose carbon atom(s) may be replaced with at least one heteroatom selected from nitrogen, oxygen, and sulfur;
h, i, and p each independently represent an integer of 1 to 4, q and q each independently represent an integer of 1 to 3, and n, o, r, and s each independently represent 1 or 2;
a represents 1, b and c each independently represent 1 or 2, and d represents an integer of 1 to 4; and
the heteroaryl(ene) contains at least one heteroatom selected from B, N, O, S, Si, and P.