We performed the synthesis of a new copoly (M4Ch-ChMA), copoly ((4-methacryloyloxy) chalcone-cholestery methacrylate), with chalconyl and cholesteryl moiety characteristics for photoalignment materials. Good thermal stabilities of the synthesized copolymers are confirmed by thermogravimetric analysis (TGA) measurement. The pretilt angles of the nematic liquid crystal (NLC) are reduced as UV exposure time is increased on the copolymer surfaces. A pretilt angle of 81° in NLC was observed with UV exposure of 3 min on the copolymer-3 surface. The NLCs pretilt angle is attributed to increased chalcone with increasing the UV exposure time.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)