Patent ID: 8610345

Claim:
A light emitting device material containing a pyrene compound represented by the formula (2): wherein R 20 to R 36 may be the same or different and represent a group selected from 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 arylether group, an arylthioether group, an aryl group selected from a phenyl group, a naphthyl group, a biphenyl group, a phenanthryl group and a terphenyl group, a heteroaryl group, a halogen, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, an amino group, a phosphine oxide group and a silyl group; adjacent substituents among R 20 to R 36 may be combined with each other to form a ring; Ar represents an arylene group selected from a phenyl group and a naphthyl group; and R 22 or R 24 is an aryl group or a heteroaryl group.