Patent ID: 8168369

Claim:
A photoactive compound represented by Chemical Formula 1 below: wherein, each of R1 and R2 independently is hydrogen, halogen, cyano, —R, —OR, —SR, —COR, —OCOR, —NRR′, or —CONRR′ group, R3 is an alkyl group of C1 to C8 or an aryl group of C6 to C12, and A is an alkylene group of C2 to C15 unsubstituted or substituted with one or more substituents selected from the group consisting of —R, —OR, —SR, —COR, and —OCOR groups, and each of the R and R′ is an alkyl group of C1 to C10, a halo alkyl group of C1 to C10, or an aralkyl group of C7 to C13, or R and R′ taken together form a ring.