AROMATIC AMINE DERIVATIVE, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT, AND ELECTRONIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide an organic electroluminescent element emitting with high efficiency, and an aromatic amine derivative capable of being used for the element.SOLUTION: There is provided an aromatic amine derivative represented by the general formula (1), where any two of Rto Rare each independently represented by the general formula (2). In the general formula (2), at least one of Arand Aris a substituent represented by the general formula (3) and Lto Lare single bonds or connecting groups. In the general formula (3), where Ar is a substituted or unsubstituted bivalent aromatic hydrocarbon group having 6 to 18 ring forming carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 15 ring forming atoms.