Material for organic electroluminescence element, and organic electroluminescence element using same

摘要

Provided is a material for an organic electroluminescence device, which further has a bulky carbazolyl group at each of the 3-position and 6-position of its central carbazole skeleton, and which has a dibenzofuran skeleton or a dibenzothiophene skeleton at the N atom of the central carbazole skeleton through a linking group as required. Also provided is an organic electroluminescence device, including one or more organic thin film layers including a light emitting layer between a cathode and an anode, in which at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

主权项

1. A material for an organic electroluminescence device of formula (1): wherein X is an oxygen atom or a sulfur atom; R1 to R8 are each independently an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 ring carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a cycloalkoxy group having 3 to 20 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, an aryloxy group having 6 to 18 ring carbon atoms, a heteroaryl group having 5 to 18 ring atoms, an amino group, a silyl group, a fluoro group, or a cyano group, and each of R1 to R8 is independently optionally substituted; each of a to d and h is independently an integer of from 0 to 4; each of e to g is independently an integer of from 0 to 3; a total of a to h is 6 or less; and L is a single bond, an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 20 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, or a heteroarylene group having 5 to 18 ring atoms; L is optionally substituted with an optionally substituted alkyl group having 1 to 20 carbon atoms, an optionally substituted cycloalkyl group having 3 to 20 ring carbon atoms, an optionally substituted alkoxy group having 1 to 20 carbon atoms, an optionally substituted cycloalkoxy group having 3 to 20 ring carbon atoms, an optionally substituted aryl group having 6 to 18 ring carbon atoms, an optionally substituted aryloxy group having 6 to 18 ring carbon atoms, an optionally substituted heteroaryl group having 5 to 18 ring atoms, an optionally substituted amino group, an optionally substituted silyl group, an optionally substituted fluoro group, or an optionally substituted cyano group, and the material is suitable for an organic electroluminescence device.