Patent ID: 8871430

Claim:
A photoactive compound represented by the following Formula 1: wherein R 1 is a C 1 ˜C 8 alkyl group; or a C 6 ˜C 12 aryl group, R 2 is a C 1 ˜C 8 alkyl group; or a C 1 ˜C 8 alkyl group substituted by one or more substituent groups selected from the group consisting of R, OR, SR and COR, R 3 and R 4 are hydrogen; or are connected to each other to form a condensed ring, R 5 is a C 1 ˜C 8 alkyl group; or a C 6 ˜C 12 aryl group, A is a C 2 ˜C 15 alkylene group; or a C 2 ˜C 15 alkylene group substituted by one or more substituent groups selected from the group consisting of R, OR, SR, COR and OCOR, and R is selected from a C 1 ˜C 10 alkyl group; a C 1 ˜C 10 haloalkyl group; or a C 7 ˜C 13 aralkyl group.