AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE ELEMENT USING THE SAME

摘要

Disclosed is a novel aromatic amine derivative which enables to produce an organic EL element having a reduced a driving voltage, suppressed in the increase of driving voltage even when driven continuously for a long term, and having a long service life. The aromatic amine derivative is represented by the general formula (1) [wherein R¹ to R⁷ independently represent a hydrogen atom, a substituted or unsubstituted aryl group having 5 to 50 nuclear atoms, or the like; a represents an integer of 1 or greater; b, c, g and h independently represent an integer of 1 to 5; d, e and f independently represent an integer of 1 to 4; Ar¹ and Ar² represent groups represented by the general formulae (2) and (3), respectively, provided that Ar¹ and Ar² are not the same as each other; R⁸ to R¹¹ independently represent a hydrogen atom or the like; i and m independently represent an integer of 1 to 5; j and k independently represent an integer of 1 to 4; and n and p independently represent an integer equal to or greater than 0, provided that n?p.