申请人:Idemitsu Kosan Co., Ltd.
公开号:EP1997799A1
公开(公告)日:2008-12-03
Provided are a novel aromatic amine derivative represented by the following general formula (1) and an organic electroluminescent device including an organic thin film formed of one or a plurality of layers including at least a light emitting layer interposed between a cathode and an anode, in which at least one layer of the organic thin film contains the aromatic amine derivative alone or as a component of a mixture, which contributes to suppressing molecular crystallization and improving yield in the production of an organic electroluminescent device, whereby an organic electroluminescent device having a long lifetime can be obtained, and the aromatic amine derivative is capable of realizing the organic electroluminescent device:
where: R1 represents an aryl group or the like; a represents an integer of 0 to 4; b represents an integer of 1 to 3; and at least one of Ar1 to Ar4 represents a group represented by the following general formula (2):
where Ar5 represents a fused aromatic ring group and Ar6 represents an aryl group or an aromatic heterocyclic group,
where remaining groups of Ar1 to Ar4, none of which is represented by the general formula (2), each independently represent an aryl group or an aromatic heterocyclic group.
提供了一种由以下一般式(1)表示的新型芳香胺衍生物,以及包括由至少一个或多个层次组成的有机薄膜的有机电致发光装置,其中有机薄膜的至少一层包含仅芳香胺衍生物或作为混合物成分的芳香胺衍生物,有助于抑制分子结晶并提高有机电致发光装置的产量,从而可以获得寿命长的有机电致发光装置,且该芳香胺衍生物能够实现该有机电致发光装置:
其中:R1代表芳基或类似物;a代表0到4的整数;b代表1到3的整数;Ar1至Ar4中至少一个代表由以下一般式(2)表示的基团:
其中Ar5代表融合芳香环基团,Ar6代表芳基或芳香杂环基团,
Ar1至Ar4的其余基团,其中没有一个被一般式(2)表示,各自独立地代表芳基或芳香杂环基团。