Patent ID: 8729530

Claim:
A light emitting device material containing a pyrene compound represented by formula (1): wherein R 1 to R 10 may be the same or different and represent a group 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 arylether group, an arylthioether group, an aryl group, a heteroaryl group, halogen, an amino group, a cyano group, a silyl group and —P(═O)—R 11 , and adjacent substituents may be combined to form a ring structure; R 11 represents a group selected from among an aryl group and a heteroaryl group, provided that any one of R 1 to R 10 is a group represented by formula (2) and the pyrene compound contains only one group represented by formula (2): wherein R 12 to R 16 may be the same or different and represent a group 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 arylether group, an arylthioether group, an aryl group, a heteroaryl group, halogen, an amino group, a cyano group and a silyl group, and adjacent substituents may be combined to form a ring structure, and B is a boron atom, wherein at least one of R 1 to R 10 is an alkyl group or an aryl group.