Patent ID: 7901794

Claim:
A light-emitting device material containing a pyrene compound represented by the following general formula (4): wherein R 16 to R 24 each may be the same or different and are selected from among hydrogen, alkyl group, cycloalkyl group, heterocyclic group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, arylether group, arylthioether group, aryl group, heteroaryl group, halogen, cyano group, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, amino group, phosphine oxide group and condensed ring formed between adjacent groups; R 25 to R 28 each may be the same or different and are selected from among hydrogen, alkyl group, cycloalkyl group, heterocyclic group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, arylether group, arylthioether group, aryl group, heteroaryl group, halogen, cyano group, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, amino group and phosphine oxide group; and X 2 is selected from among groups represented by the following general formula (5): wherein R 29 is selected from the group consisting of hydrogen, alkyl group, cycloalkyl group, heterocyclic group, alkenyl group, cycloalkenyl group, alkynyl group, aryl group, heteroaryl group, cyano group, carbonyl group, carboxyl group, oxycarbonyl, group and carbamoyl group, wherein at least one of R 16 to R 24 is an aryl group or heteroaryl group.