AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME

摘要

An aromatic amine derivative represented by formula (1):
wherein R 1 , R 2 , R 3 , L, Ar 1 , Ar 2 , k, m, and n are the same as defined in the specification, is useful as a material for an organic EL device and realizes an organic EL device with a high efficiency and a long lifetime even when driving it at a low voltage.