[EN] BICARBAZOLE CONTAINING COMPOUNDS FOR OLEDS<br/>[FR] COMPOSÉS CONTENANT UN BICARBAZOLE POUR OLED
申请人:UNIVERSAL DISPLAY CORP
公开号:WO2011137072A1
公开(公告)日:2011-11-03
Novel organic compounds comprising a bicarbazole core are provided. In particular, the compound has a 3; 31 -bicarbazole core substituted at the 9 th position with at least one of dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene and azadibenzoselenophene. The compounds may be used in organic light emitting devices ( 100, 200 ) to provide devices having improved efficiency and improved lifetime.
Novel organic compounds comprising a bicarbazole core are provided. In particular, the compound has a 3;3′-bicarbazole core substituted at the 9
th
position with at least one of dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene and azadibenzoselenophene. The compounds may be used in organic light emitting devices to provide devices having improved efficiency and improved lifetime.
Novel organic compounds comprising a bicarbazole core are provided. In particular, the compound has a 3;3′-bicarbazole core substituted at the 9th position with at least one of dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene and azadibenzoselenophene. The compounds may be used in organic light emitting devices to provide devices having improved efficiency and improved lifetime.
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.