| abstract |
The present invention relates to a novel thermally activated delayed fluorescent material and its application and device. The material is characterized in that it has a structure represented by formula (1), Among them, R 1 , R 2 , R 3 , and R 4 are hydrogen atoms, C 1 -C 10 aliphatic straight-chain or branched alkanes, C 3 -C 30 substituted or unsubstituted carbazole groups, C 3 ~C 30 substituted or unsubstituted arylamine group, C 3 ~C 30 substituted or unsubstituted phenothiazine group, C 3 ~C 30 substituted or unsubstituted phenoxazine group, C 3 ~C 30 Any one of substituted or unsubstituted phenazine groups and C 3 -C 30 substituted or unsubstituted acridine groups, the material provided by the invention is stable and has good luminescent performance, and can be used as a luminescent material, Used in organic electroluminescent devices. |