申请人:Kai Takahiro
公开号:US20090153031A1
公开(公告)日:2009-06-18
Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and simple in structure and also disclosed is a heterocyclic compound useful for the said device. Specifically, the heterocyclic compound is represented by the following general formula (I) and the organic EL device comprises an organic layer containing the said heterocyclic compound. In general formula (I), X
1
and X
2
respectively denote O, S, or N—R, R denotes a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group, Ar
1
, Ar
2
, Ar
3
, and Ar
4
respectively denote a substituted or unsubstituted aryl group, Ar
1
, Ar
2
, and the nitrogen atom bonded thereto or Ar
3
, Ar
4
, and the nitrogen atom bonded thereto may form a nitrogen-containing hetero ring, and m and n respectively denote an integer of 1 or 2.
公开了一种有机电致发光器件(有机EL器件),其在发光效率上得到改善,完全确保了驱动稳定性,并且结构简单。同时还公开了一种对该器件有用的杂环化合物。具体来说,该杂环化合物由以下一般式(I)表示,有机EL器件包括含有该杂环化合物的有机层。在一般式(I)中,X1和X2分别表示O、S或N—R,R表示氢原子、烷基或取代或未取代芳基,Ar1、Ar2、Ar3和Ar4分别表示取代或未取代芳基,Ar1、Ar2和与其相连的氮原子或Ar3、Ar4和与其相连的氮原子可以形成含氮杂环,m和n分别表示1或2的整数。