Patent ID: 8883398

Claim:
A photoactive compound represented by Formula 1, [Formula 1] wherein, in Formula 1, Y is a C 1 -C 15 alkylene group unsubstituted or substituted with one or more substituents selected from the group consisting of R, OR, SR, COR and OCOR, M 1 is a C 1 -C 8 alkyl group or a C 6 -C 12 aryl group, R 1 is a C 1 -C 8 alkyl group or a C 6 -C 12 aryl group, at least one of R 2 to R 6 is XA, and the rest are each independently selected from the group consisting of a halogen group, CN, R, OR, SR, COR, OCOR, NRR′ and CONRR′, X is directly linked; or selected from the group consisting of C═O, O, S, S═O, and SO 2 , A is a C 6 -C 20 aryl group unsubstituted or substituted with one or more substituents selected from the group consisting of a halogen group, CN, R, OR, SR, COR, OCOR, NRR′ and CONRR′, R and R′ are each independently selected from the group consisting of hydrogen, a C 1 -C 10 alkyl group, a C 1 -C 10 haloalkyl group and a C 7 -C 13 arylalkyl group, or R and R′ may form a ring together.