Pretilt angles of vertically aligned nematic liquid crystal (NLC) with the application of copolymers possessing chalconyl and cholesteryl moieties

Jeoung Yeon Hwang, Dae Shik Seo, Jong Ho Son, Dong Hack Suh

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)L1108-L1110
JournalJapanese journal of applied physics
Volume39
Issue number11 A
Publication statusPublished - 2000 Nov 1

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copolymers
liquid crystals
thermal stability
synthesis

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "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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Pretilt angles of vertically aligned nematic liquid crystal (NLC) with the application of copolymers possessing chalconyl and cholesteryl moieties. / Hwang, Jeoung Yeon; Seo, Dae Shik; Son, Jong Ho; Suh, Dong Hack.

In: Japanese journal of applied physics, Vol. 39, No. 11 A, 01.11.2000, p. L1108-L1110.

Research output: Contribution to journalArticle

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AU - Hwang, Jeoung Yeon

AU - Seo, Dae Shik

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AU - Suh, Dong Hack

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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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