申请人:UDC Ireland Limited
公开号:US10249827B2
公开(公告)日:2019-04-02
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 B1, B2, B3, B4, B5, B6, B7 and B8 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)化合物,其特征在于它们被苯并咪唑并[1,2-a]苯并咪唑-5-基和/或苯并咪唑并[1,2-a]苯并咪唑-2,5-亚基取代,且取代基 B1、B2、B3、B4、B5、B6、B7 和 B8 中至少有一个代表 N;本发明还涉及其生产工艺及其在电子设备,尤其是电致发光设备中的应用。当用作电致发光器件中磷光发光体的主材料时,式 I 化合物可提高电致发光器件的效率、稳定性、可制造性或光谱特性。