Patent ID: 8120022

Claim:
A light emitting device material comprising a fluorene compound represented by the following general formula (1): wherein R 1 to R 18 each may be the same or different and are selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, an aryl group, a heteroaryl group, halogen, a cyano group, an amino group, a silyl group, and —P(═O)R 19 R 20 , R 19 and R 20 are each selected from the group consisting of an aryl group and a heteroaryl group, adjacent substituents among R 1 to R 18 may be combined with each other to form a ring, provided that at least one of R 1 to R 12 is a substituent represented by the following general formula (2): wherein R 21 to R 24 each may be the same or different and are selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, an aryl group, a heteroaryl group, a cyano group, an amino group, and a silyl group, adjacent substituents among R 21 to R 24 may be combined with each other to form a ring, A is selected from the group consisting of a single bond, an arylene group, and a heteroarylene group, B is used for linkage to R 1 to R 12 , X is an oxygen atom or a sulfur atom, Y is selected from among the following groups: wherein R 25 is selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an aryl group, and a heteroaryl group.