| abstract |
The present invention relates to a compound of the general formula represented by the following formula: In formula (I): A 4 is selected from cyano group or phenylcyano group; A 1 , A 2 and A 3 are each independently represented by the following formula (II) or formula (III): In formula (II) and formula (III): R 1 -R 8 and R 9 -R 16 are independently selected from hydrogen, C 1 -C 10 alkyl, C 6 -C 30 substituted or unsubstituted aryl Or a fused ring aromatic hydrocarbon group, a C 3 -C 30 substituted or unsubstituted heteroaryl group or a fused heterocyclic aromatic hydrocarbon group; and any adjacent two of R 1 -R 8 are optionally connected to form a cyclic structure , any adjacent two of R 9 -R 16 are optionally connected to form a cyclic structure; and when A 1 is selected from formula (II), at least one of R 1 and R 8 in formula (II) is hydrogen ; When A 1 is selected from formula (III), at least one of R 9 and R 16 in formula (III) is hydrogen; in formula (III): X is selected from oxygen, sulfur, imino, methylene, methylene in the silyl group. The present invention also relates to organic electroluminescent devices employing the compounds of the general formula above. |