Patent ID: 7504162

Claim:
A carbazole derivative represented by general formula (1): in the formula, I represents a core carbazole (G 0 ) illustrated by general formula (2), Z represents an internally branched carbazole (G 1 to G n-1 ) illustrated by general formula (3), E represents an end carbazole (G n ) illustrated by general formula (4), n represents an integer showing generation number of dendrimer, X 1 represents hydrogen, halogen, a cynano group, an alkyl group (provided, carbon number ranges from 1 to 20), a haloalkyl group (provided, carbon number ranges from 1 to 20), an alkoxy group (provided, carbon number ranges from 1 to 20), a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic residue, C A and C B in (G (n-m)-1 ) (provided, n-m≧1) make a covalent bond with N A in (G (n-m) ), and each of R 1 to R 8 represents independently hydrogen, halogen, a cynano group, an alkyl group (provided, carbon number ranges from 1 to 20), an acyl group (provided, carbon number ranges from 1 to 20), a haloalkyl group (provided, carbon number ranges from 1 to 20), a dialkylamino group (provided, carbon number ranges from 1 to 20), a diarylamino group (provided, carbon number ranges from 1 to 20), an alkoxy group (provided, carbon number ranges from 1 to 10) or a substituted or unsubstituted heterocyclic residue