TY - JOUR
T1 - Pretilt angles of vertically aligned nematic liquid crystal (NLC) with the application of copolymers possessing chalconyl and cholesteryl moieties
AU - Hwang, Jeoung Yeon
AU - Seo, Dae Shik
AU - Son, Jong Ho
AU - Suh, Dong Hack
PY - 2000/11/1
Y1 - 2000/11/1
N2 - 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.
AB - 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.
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U2 - 10.1143/jjap.39.l1108
DO - 10.1143/jjap.39.l1108
M3 - Article
AN - SCOPUS:0034316546
SN - 0021-4922
VL - 39
SP - L1108-L1110
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 11 A
ER -