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  • 02월 28일 19시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제111회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Study on the effect of gold nanoparticle in liquid-crystalline blue phases

등록일
2013년 2월 14일 16시 41분 41초
접수번호
1240
발표코드
MAT.P-1046 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 17일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
이지혜, 성열민, 정 현*
동국대학교 화학과, Korea
Cholesteric blue phases exhibit unique properties for applications as a display or sensor. However, in only single component systems, they show very narrow temperature range between the isotropic and the chiral nematic phase. This behavior significantly hinders their applications. In order to widening of the temperature range of blue phase, we introduce surface modified gold nanoparticles with thiol or ammonium ions in blue phase of liquid crystal (mixture of 4-cyano-4’ pentylbiphenyl, JC-1041XX and 7.5 wt% of chiral dopant). The monodispersed and nonaggreated pristine gold nanoparticle can be easily obtained by ‘Brust’ two-phase method from aqueous solution of hydrogen tetrachloroaurate in the presence of tetraoctylammonium bromide (TOAB). After reduction of gold ions, surface of gold nanoparticle further functionalized by ligand exchange reaction with 4’-(10-mercaptodecyloxy)biphenyl-4-carbonitrile (HS10OCB). These multi-component liquid crystal mixtures shows enhanced thermal stability due to addition of gold nanoparticle in the lattice disclinations of cholesteric blue phases.

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