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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Photo-responsive helical nanostructure with conductive triphenylamine core

등록일
2015년 9월 3일 16시 07분 52초
접수번호
1275
발표코드
POLY.P-75 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
고분자화학
저자 및
공동저자
김지성, 서명은1, 김상율*
한국과학기술원(KAIST) 화학과, Korea
1한국과학기술원(KAIST) 나노과학기술대학원, Korea
Evolution of supramolecular chirality from self-assembly of achiral compounds and control over its handedness is closely related to the evolution of life and development of supramolecular materials with desired handedness. Here we report a system where the entire process of induction, control, and locking of supramolecular chirality can be manipulated by light. Combination of triphenylamine and diacetylene moieties in the molecular structure allowed photo-induced self-assembly of the molecule into helical aggregates in a chlorinated solvent by visible light, and covalent fixation of the aggregate via photopolymerization by UV. By utilizing circularly polarized light (CPL), we observed that supramolecular chirality of the resulting helical aggregates was selectively and reversibly controlled by the rotational direction of visible CPL, and the desired supramolecular chirality could be arrested by irradiation of circular polarized ultraviolet light. This methodology opens a route to formation of supramolecular chiral conducting nanostructures from self-assembly of achiral molecules.

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