Patent ID: 7226546

Claim:
An organic host material for an organic luminescence layer for an organic electroluminescence element that is a carbazole derivative represented by the following general formula (2) wherein R 1 to R 6 are each independently a hydrogen or halogen atom, an alkyl, aralkyl, aryl, cycloalkyl, fluoroalkyl, amino, nitro, cyano, hydroxy, or alkoxy group; R 7 and R 8 are each independently a hydrogen atom, an alkyl, aralkyl, aryl, or cycloalkyl group, X 1 and X 2 are each independently a hydrogen atom, an alkyl, aralkyl, aryl, or cycloalkyl group; Y is a single bond, an alkylene, cycloalkylene, arylene, or aralkylene chain; and p is an integer 2 or 3.