| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic electroluminescent device in which the driving voltage is lowered and the emission efficiency is improved.SOLUTION: The monoamine derivative is represented by the general formula (1) in the figure, where: Arand Arare each independently an aryl group or a heteroaryl group; Arto Arare each independently a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, an aryl group, a heteroaryl group, or an aryl or heteroaryl group formed through ring condensation with any adjacent substituent; n is an integer from 0 to 4; and Lis a single bond, an arylene group, or a heteroarylene group.SELECTED DRAWING: Figure 1 |
