申请人:Yen Feng-Wen
公开号:US09166177B2
公开(公告)日:2015-10-20
The present invention discloses a novel ditriphenylene derivative is represented by the following formula (I), the organic EL device employing the ditriphenylene derivative as host material or dopant material of emitting layer can lower driving voltage, prolong half-life time and increase the efficiency.
Wherein m, n represent an integer of 0 to 10. X is a divalent bridge selected from the atom or group consisting from O, S, C(R3)(R4), NR5, Si(R6)(R7). Ar1, Ar2, R1 to R7 are substituents and the same definition as described in the present invention.
本发明揭示了一种新的二三苯基衍生物,其由下式(I)表示,采用该二三苯基衍生物作为有机EL器件的主体材料或发射层的掺杂材料可以降低驱动电压,延长半衰期并提高效率。其中m,n表示0到10的整数。X是从O、S、C(R3)(R4)、NR5、Si(R6)(R7)等原子或基团中选择的双价桥。Ar1,Ar2,R1到R7是取代基,与本发明中描述的相同定义。