서지주요정보
Monolayer behavior and in situ interfacial polymerization of polymerizable liquid crystal at the air-water interface and application to alignment layers for liquid crystal display = 중합가능한 액정분자의 기-액 계면에서의 단분자막 및 계면중합과 액정배향막에의 응용
서명 / 저자 Monolayer behavior and in situ interfacial polymerization of polymerizable liquid crystal at the air-water interface and application to alignment layers for liquid crystal display = 중합가능한 액정분자의 기-액 계면에서의 단분자막 및 계면중합과 액정배향막에의 응용 / Mu-Hyun Kim.
저자명 Kim, Mu-Hyun ; 김무현
발행사항 [대전 : 한국과학기술원, 1996].
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소장정보

등록번호

8006558

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 96003

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The monolayers and interfacial polymerization of liquid crystalline n-[(4- cyano-4'-biphenyl)oxy] alkyl vinyl ether series were studied. All of the materials were synthesized from the reaction of 4-cyano-4'-(n-hydroxyalkane -1-yloxy) biphenyl and n-heptyl vinyl ether. At the air-water interface 3-[(4-cyano-4'-biphenyl) oxy] undecanyl vinyl ether] formed an unstable monolayer, but 11-[(4-cyano-4'-biphenyl) oxy] undecanyl vinyl ether] could form a stable monolayer. The limiting areas of homologues series of 8,10,11 -[(4-cyano-4'-biphenyl) oxy] undecanyl vinyl ether] were about 12, 15, and 18$Å^2$/molecule, respectively, and smaller than the flat area of hydrophilic cyanobiphenyl group. The monolayer of 11-[(4-cyano-4'-biphenyl) oxy] undecanyl vinyl ether] was transferred only as the Z-type on a hydrophilic substrate in the first few layers. The deposition of 11-[(4-cyano -4'-biphenyl) oxy] undecanyl vinyl ether] onto various substrates using a mixture with poly (amic acid) alkylamine salt were investigated to apply to liquid crystal display for alignment. Mixed films of the poly (amic acid) alkylamine salt and 11-[(4-cyano-4'-biphenyl) oxy]undecanyl vinyl ether] were completely miscible in dimethylacetamide and formed a stable monolayer at the air-water interface. Y-type LB film on ITO glass was confirmed by FTIR spectroscopy and UV-vis spectroscopy. The layer thickness of the Y-type deposition onto a Si wafer was determined to be 19.5Å by ellipsometry. The contact angles of all transferred films showed a sharp increases after first layer. The monolayer of the mixture was polymerized by UV-irradiation at 25 mN/m, and the extent of the reaction was investigated by UV-vis spectroscopy. A liquid crystal cell with a mixture LB alignment was fabricated and the polarized microscope textures of liquid crystals confirmed the alignment of liquid crystal display even without a rubbing process.

서지기타정보

서지기타정보
청구기호 {MCHE 96003
형태사항 viii, 87 p. : 삽도 ; 26 cm
언어 영어
일반주기 저자명의 한글표기 : 김무현
지도교수의 영문표기 : Jong-Duk Kim
지도교수의 한글표기 : 김종득
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 Reference : p. 83-87
주제 Monolayer
Langmuir-Blodgett film
Liquid Crystal Display Alignment
Interfacial Photopolymerization
Liquid Crystal
단분자막
Langmuir-Blodgett막
액정표시소자 배향막
계면 광중합
액정
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