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  • 02월 26일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제115회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Role of a Surfactant in Tailoring Shape Evolution of 3D Molecular Architecture

2015년 2월 26일 13시 46분 07초
MAT.P-1175 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 15일 (수요일) 16:00~19:00
저자 및
전묘빈, 권선범, 이희승*
한국과학기술원(KAIST) 화학과, Korea
There have been tremendous efforts to control the three-dimensional (3D) shapes of nano/microstructures, since the shape is one of the most important parameter determining physicochemical properties of materials. Therefore, both tailoring shapes and understanding the mechanism of morphogenesis have been of great interest to material scientists in order to elicit the targeted functions. For example, using surfactants is a common method to control the shape of a wide variety of organic and inorganic crystals. In most precedent studies, surfactant molecules are known to adsorb preferentially onto the specific crystal facets to stabilize surface energy and inhibit the growth. However, quantitative investigation of the interactions between crystal facets and surfactant has been recognized as a challenging task. Here, we report the role of ionic surfactant cetyltrimethyl ammonium bromide (CTAB) in shape evolution of 3D molecular architectures obtained from the self-assembly of a β-peptide foldamer. Shape evolution tendency and molecular packing structures of the self-assembled structures were analyzed by electron microscopy and diffraction experiments. Moreover, molecular dynamics simulation provided a plausible explanation for the role of surfactant molecules in crystal growth mechanism and interactions between surfactants and building block peptides in detail.