| abstract |
Disclosed is an aromatic amine derivative represented by formula (1). (In the formula, A 1 represents an alkyl group, a substituted or unsubstituted aromatic group, a substituted or unsubstituted heterocyclic ring group, or an organic group represented by formula (2); X 1 , X 2 and X 3 independently represent a substituted or unsubstituted aromatic group, or a substituted or unsubstituted heterocyclic ring group, wherein X 1 and X 2 represent different linkage groups from each other; and B 1 , B 2 and B 3 independently represent a substituted or unsubstituted aromatic group, or a substituted or unsubstituted heterocyclic ring group.) |