发明授权
US09166179B2 Aromatic amine derivative, and organic electroluminescent element comprising the same 有权
芳族胺衍生物和包含它们的有机电致发光元件

Aromatic amine derivative, and organic electroluminescent element comprising the same
摘要:
An aromatic amine derivative represented by the following formula (1)wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.
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