AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING SAME

摘要

An aromatic amine derivative represented by formula (1). In the formula, at least one of Ar1 to Ar3 is represented by formula (2); and X1 to X3 independently represents a nitrogen atom or CR2, wherein each of two among X1 to X3 represents a nitrogen atom and X1 and X3 do not represent a nitrogen atom simultaneously.