Patent ID: 8021764

Claim:
A compound represented by Formula (1): where X is selected from the group consisting of a substituted or unsubstituted C1-C30 alkylene group, a substituted or unsubstituted C2-C30 alkenylene group, a substituted or unsubstituted C6-C30 arylene group, a substituted or unsubstituted C2-C30 heteroarylene group, and a substituted or unsubstituted C2-C30 heterocycle; each of R 1 , R 2 , R 3 , R 1 ′, R 2 ′ and R 3 ′ is independently a mono or multi substituent selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C1-C30 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aryloxy group, a substituted or unsubstituted C2-C30 heterocycle, a substituted or unsubstituted C6-C30 condensed polycyclic group, a hydroxy group, a cyano group, and a substituted or unsubstituted amino group, and two or more adjacent groups among R 1 , R 2 , R 3 , R 1 ′, R 2 ′ and R 3 ′ can be connected to each other to form a saturated or unsaturated carbocycle; and each Ar is independently selected from the group consisting of a phenyl group, an ethylphenyl group, an ethylbiphenyl group, an o-, m-, or p-fluorophenyl group, a dichlorophenyl group, a dicyanophenyl group, a trifluoromethoxyphenyl group, an o-, m-, or p-tolyl group, an o-, m-, and p-cumenyl group, a mesityl group, a phenoxyphenyl group, a (α,α-dimethylbenzene) phenyl group, a (N,N′-dimethyl)aminophenyl group, a (N,N′-diphenyl) aminophenyl group, a pentarenyl group, an indenyl group, a naphthyl group, a methylnaphthyl group, an anthracenyl group, an azurenyl group, a heptarenyl group, an acenaphthylrenyl group, a phenanthrenyl group, a fluorenyl group, an anthraquinolyl group, a triphenylene group, a pyrenyl group, a pherylenyl group, a chloropherylenyl group, a pentaphenyl group, a pentacenyl group, a tetraphenylenyl group, a hexaphenyl group, a coroneryl group, a trinaphthylenyl group, a heptaphenyl group, and a carbazolyl group.