Growth of Self-Assembled Monolayer of Thiophene on Gold Surface : An Infrared Spectroscopic Study : Surfaces, Interfaces, and Films
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概要
- 論文の詳細を見る
The growth process of self-assembled monolayers (SAMs) of thiophene on Au(111) surfaces was revealed by Fourier-transform infrared reflection absorption spectroscopy (FT-IR-RAS). Thiophene spontaneously adsorbs from an ethanol solution onto the gold surface, and form swell-ordered SAM. FT-IR-RAS measurements and Langmuir adsorption isotherms revealed that thiophene SAMs possess two phases with different molecular orientations during SAM growth. In the primary phase, thiophene orients parallel to the gold surface, In the final phase, the molecular orientation changes from parallel to up right configurations with respect to the surface. This suggests that even molecules without alkyl-chain moiety can reorient during SAM growth. A transition of the molecular orientation is caused by a balance between thiophene-thiophene and thiophene-gold interactions.
- 社団法人応用物理学会の論文
- 2001-12-15
著者
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Matsuura Toshihiko
Department Of Physics Hokkaido University Of Education
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Matsuura Toshihiko
Department Of Applied Physics Graduate School Of Engineering Hokkaido University
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Nakajima Masayoshi
Department Of Physics Hokkaido University Of Education
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Shimoyama Yuhei
Department of Physics, Hokkaido University of Education
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Shimoyama Yuhei
Department Of Physics Faculty Of Education Hokkaido University Of Education
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Shimoyama Yuhei
Department of Materials Science and Engineering, Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan
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