Patent ID: 8614010

Claim:
An aromatic amine derivative represented by formula (5): wherein: Ar 2 is a substituent A represented by formula (1); Ar 3 is a substituent B represented by formula (3); Ar 4 is the substituent A, the substituent B, or a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, wherein the optional substituent is selected from the group consisting of a linear or branched alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 ring carbon atoms, a trialkylsilyl group having 3 to 10 carbon atoms, a triarylsilyl group having 18 to 30 ring carbon atoms, an alkylarylsilyl group having 8 to 15 carbon atoms whose aryl portion has 6 to 14 ring carbon atoms, an aryl group having 6 to 14 ring carbon atoms, a halogen atom, or a cyano group, and the adjacent optional substituents may be bonded to each other to form a saturated or unsaturated, divalent group that forms a ring; and the substituent A and the substituent B are different from each other: wherein: L 1 represents a single bond, or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, and L 3 represents a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, wherein the optional substituent which any one of L 1 and L 3 may have is selected from the group consisting of a linear or branched alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 ring carbon atoms, a trialkylsilyl group having 3 to 10 carbon atoms, a triarylsilyl group having 18 to 30 ring carbon atoms, an alkylarylsilyl group having 8 to 15 carbon atoms whose aryl portion has 6 to 14 ring carbon atoms, an aryl group having 6 to 16 ring carbon atoms, a halogen atom, and a cyano group, and the optional substituents adjacent to each other may be bonded to each other to form a saturated or unsaturated ring; a, e, and f each independently represent an integer of 0 to 4; b represents an integer of 0 to 3; and R 1 , R 2 , R 5 and R 6 each independently represent a linear or branched alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 ring carbon atoms, a trialkylsilyl group having 3 to 10 carbon atoms, a triarylsilyl group having 18 to 30 ring carbon atoms, an alkylarylsilyl group having 8 to 15 carbon atoms whose aryl portion has 6 to 14 ring carbon atoms, an aryl group having 6 to 14 ring carbon atoms, a halogen atom, or a cyano group, and a plurality of R 1 's, R 2 's, R 5 's and R 6 's adjacent to each other may be bonded to each other to form a saturated or unsaturated, divalent group that forms a ring.