| 摘要 |
<p>Disclosed is a novel aromatic amine derivative represented by the general formula (1) below. Also disclosed is an organic electroluminescent device wherein an organic thin film composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode, and at least one layer of the organic thin film contains the aromatic amine derivative by itself or as a component of a mixture. The organic electroluminescent device has long life, while being improved in the production yield since crystallization of molecules hardly occurs therein. Namely, the aromatic amine derivative enables to realize such an organic electroluminescent device. (1) [In the formula, R1 represents an aryl group or the like; a represents an integer of 0-4; b represents an integer of 1-3; and at least one of Ar1-Ar4 represents a group represented by the following general formula (2): (wherein Ar5 represents a fused aromatic ring group and Ar6 represents an aryl group or an aromatic heterocyclic group). In the general formula (1), any of Ar1-Ar4 which is not a group represented by the general formula (2) independently represents an aryl group or an aromatic heterocyclic group.] ® KIPO & WIPO 2009</p> |
