Patent ID: 8187727

Claim:
An imidazole derivative represented by the following formula (1): wherein R 1 and R 2 are each independently or simultaneously selected from the group consisting of an alkenyl group substituted with an aryl group, a phenyl group, a biphenyl group, a naphthyl group, a phenyl group substituted with —CN, a phenyl group substituted with a heterocyclic group, and a substituted or unsubstituted heterocyclic group; R 3 to R 6 are each independently or simultaneously selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted arylamine group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aliphatic cyclic group, a substituted or unsubstituted silicon group, a substituted or unsubstituted boron group, an amino group, a nitrile group, a nitro group, a halogen group, an amide group and an ester group; R 7 is selected from the group consisting of a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aliphatic cyclic group, and a substituted or unsubstituted silicon group; and R 8 is selected from the group consisting of an alkyl group; an aryl group which is unsubstituted or substituted with an alkyl group, an alkenyl group, —CN, an aryl group, —BRR′ or —SiRR′R″; and a heterocyclic group selected from the group consisting of the following formulae: the heterocyclic group being unsubstituted or substituted with —CN, an aryl group, a heterocyclic group (wherein the heterocyclic group directly bonds to the formulae for R 8 via a carbon atom), an aliphatic cyclic group, —BRR′ or —SiRR′R″ (wherein R, R′ and R″ are the same or different from each other and are independently selected from a C 1 to C 20 alkyl group, a C 6 to C 20 aryl group, and a C 6 to C 20 aryl group substituted with a C 1 to C 20 alkyl group).