Patent ID: 7989802

Claim:
A light emitting device material, comprising a pyrene compound represented by formula (1): wherein R 1 to R 17 may be the same or different and are each selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, an aryl group, a heteroaryl group, an amino group, a silyl group, —P(═O)R 18 R 19 , and a ring structure formed together with an adjacent substituent, R 18 and R 19 are each selected from an aryl group and a heteroaryl group, n is an integer of 1 to 2, and X is selected from the group consisting of a single bond, an arylene group and a heteroarylene group, provided that at least one of R 10 to R 17 is used to link to X.