Patent ID: 8252507

Claim:
A photoactive compound represented by Formula 1: wherein R 1 , R 2 and R 3 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, OH, CN, R, OR, SR, COR, OCOR, NRR′, CONRR′, a substituted or unsubstituted phenyl group, and a C 2 -C 5 alkylcarboxylic acid group, wherein R and R′ are each independently C 1 -C 6 alkyl; C 1 -C 6 haloalkyl; or C 1 -C 6 alkyl group substituted with at least one group selected from the group consisting of NL 2 , OL and SL; wherein each L is hydrogen or C 1 to C 6 alkyl; and wherein the substituted phenyl is substituted with at least one group selected from the group consisting of C 1 -C 6 alkyl, halogen atom, nitrile, OH and COOH, X is selected from the group consisting of a hydrogen atom; a halogen atom; a C 1 -C 6 alkyl group unsubstituted or substituted with at least one group selected from the group wherein each L is hydrogen or C 1 to C 6 alkyl, consisting of NL 2 , OL and SL; a C 1 -C 6 haloalkyl group; a phenyl group unsubstituted or substituted with at least one group selected from the group consisting of C 1 -C 6 alkyl, halogen atom, nitrile, OH and COOH; and a C 2 -C 5 alkylcarboxylic acid group, Y is an oxygen atom or N—O—CO—R 3 , A is selected from the group consisting of a cycloalkyl group, an aryl group, and a heterocyclic ring unsubstituted or substituted with at least one halogen atom or alkyl group, n is from 0 to 6, and m is from 0 to 4.