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US 2022/0177454 A1Published application
Trisubstituted benzene compound having nitrogen-containing hetero ring in molecular terminus and organic electroluminescence element
AssigneesHodogaya Chemical Co., Ltd., Shinshu University
InventorsKazunori TOGASHI, Hideyoshi KITAHARA, Musubu ICHIKAWA
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Abstract
Provided are: a trisubstituted benzene compound represented by general formulae (1) and (2); and an organic electroluminescence (EL) element having a pair of electrodes and at least a pair of organic layers interposed therebetween, the organic EL element being characterized in that said compound is used as a constituent material for at least one organic layer.
Claims8
1:
- A trisubstituted benzene compound represented by the following general formulas (1) and (2):
- (in the formula, Ar2 is different from Ar1, and is an optionally substituted monovalent aromatic hydrocarbon group or aromatic heterocyclic group;
- R1 to R13, which may be the same as or different from each other, each represent a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched alkyl group having a carbon number of 1 to 8 which may have a substituent, a cycloalkyl group having a carbon number of 5 to 10 which may have a substituent, a linear or branched alkenyl group having a carbon number of 2 to 6 which may have a substituent, a linear or branched alkyloxy group having a carbon number of 1 to 6 which may have a substituent, or a cycloalkyloxy group having a carbon number of 5 to 10 which may have a substituent;
- X's and Y's in Ar1 each represent a carbon atom or a nitrogen atom, and at least one X represents a nitrogen atom;
- in Ar1, n represents an integer of 1 to 3;
- and
- two Ar1's may be the same as or different from each other).
4 more elements
2:
- The trisubstituted benzene compound according to claim 1, wherein Ar1 in the general formula (1) is a substituent represented by any one of the following general formulas (3) to (6).
- (in the formulas, R14 to R60, which may be the same as or different from each other, each represent a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched alkyl group having a carbon number of 1 to 8 which may have a substituent, a cycloalkyl group having a carbon number of 5 to 10 which may have a substituent, a linear or branched alkenyl group having a carbon number of 2 to 6 which may have a substituent, a linear or branched alkyloxy group having a carbon number of 1 to 6 which may have a substituent, or a cycloalkyloxy group having a carbon number of 5 to 10 which may have a substituent).
3:
- An organic electroluminescence device comprising a pair of electrodes and at least one organic layer interposed therebetween, wherein the at least one organic layer comprises the trisubstituted benzene compound as described in claim 1 as a constituent material.
4:
- The organic electroluminescence device according to claim 3, wherein at least one layer of the organic layer containing the trisubstituted benzene compound is an electron transport layer.
5:
- The organic electroluminescence device according to claim 3, wherein at least one layer of the organic layer containing the trisubstituted benzene compound is a hole blocking layer.
6:
- The organic electroluminescence device according to claim 3, wherein at least one layer of the organic layer containing the trisubstituted benzene compound is an electron injection layer.
7:
- The organic electroluminescence device according to claim 3, wherein at least one layer of the organic layer containing the trisubstituted benzene compound is a hole injection layer.
8:
- The organic electroluminescence device according to claim 3, wherein at least one layer of the organic layer containing the trisubstituted benzene compound is a light emitting layer.