申请人:Kai Takahiro
公开号:US20070129555A1
公开(公告)日:2007-06-07
This invention relates to a highly reliable material for an organic electroluminescent element exhibiting high luminance, high luminous efficiency, little deterioration in emission, and suitability for use and storage at high temperatures and to an organic electroluminescent element using said material. The material is a diaminodibenzodioxin derivative represented by general formula (1)
wherein Ar
1
, Ar
2
, Ar
3
, and Ar
4
are substituted or unsubstituted aryl groups and 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 heterocyclic ring; and this diaminodibenzodioxin derivative may be incorporated in the light-emitting layer, the hole-transporting layer, or the hole-injecting layer of an organic electroluminescent element.
本发明涉及一种高可靠性的材料,用于有机电致发光元件,该元件具有高亮度、高发光效率、发射衰减小、适用于高温使用和储存,并提供了使用该材料的有机电致发光元件。该材料是一种二氨基二苯并二噻吩衍生物,其通式表示为(1),其中Ar1、Ar2、Ar3和Ar4是取代或未取代的芳基基团,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;该二氨基二苯并二噻吩衍生物可以被纳入有机电致发光元件的发光层、空穴传输层或空穴注入层中。