Noncontact Atomic Force Microscopy Investigation of Phase-Separated Alkanethiol Self-Assembled Monolayers with Different Head Groups
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概要
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We investigated alkanethiol phase-separated SAMs (PS-SAMs) with different head groups using noncontact atomic force microscopy (NC-AFM). Two kinds of PS-SAMs were prepared composed of 1-dodecanethiol (C12)/3-mercapto-1-propanol (C3OH) and C12/11-mercapto-1-undecanol (C11OH). We obtained the topographic, energy dissipation, and surface potential (SP) images of each sample. All the images clearly showed the feature of phase separation. Additionally, in the case of C12/C11OH PS-SAMs, the tip-to-sample distance dependence of frequency shift ($\Delta f$) and energy dissipation were measured on each domain, which also exhibited a difference in molecular species. We discussed them in terms of the difference in the molecular arrangement, dipole moment and hydrophobic/hydrophilic properties of the head groups.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-07-15
著者
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Ichii Takashi
Department Of Electronic Science And Engineering Kyoto University
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KOBAYASHI Kei
International Innovation Center, Kyoto University
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Fukuma Takeshi
Department Of Electronic Science And Engineering Kyoto University
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Matsushige Kazumi
Department Of Applied Science Faculty Of Engineering Kyushu University
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Ichii Takashi
Department Of Materials Science And Engineering Kyoto University
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Fukuma Takeshi
Department of Electronic Science and Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
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Yamada Hirofumi
Department of Electrical Science and Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Ichii Takashi
Department of Materials Science and Engineering, Kyoto University, Yoshida-hommachi, Sakyo-ku, Kyoto 606-8501, Japan
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