申请人:BASF SE
公开号:US20150243907A1
公开(公告)日:2015-08-27
The present invention relates to compounds of formula (I), which are characterized in that they substituted by benzimidazo[1,2-a]benzimidazo-5-yl and/or benzimidazo[1,2-a]benzimidazo-2,5-ylene groups and in that at least one of the substituents B
1
, B
2
, B
3
, B
4
, B
5
, B
6
, B
7
and B
8
represents N; a process for their production and their use in electronic devices, especially electroluminescent devices. When used as host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
本发明涉及式(I)的化合物,其特征在于其被苯并咪唑[1,2-a]苯并咪唑-5-基和/或苯并咪唑[1,2-a]苯并咪唑-2,5-亚基取代,并且其中至少一个取代基B1、B2、B3、B4、B5、B6、B7和B8代表N;以及它们在电子器件中的使用,特别是在电致发光器件中。当作为电致发光器件中荧光发射体的主体材料时,式(I)的化合物可能提供电致发光器件的效率、稳定性、可制造性或光谱特性的改进。同时,本发明还涉及该化合物的制备方法。