Chemical Adsorption of Poly(3-alkylthiophene) on Au Using Self-Assembling Technique
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概要
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We investigated the chemical adsorption of poly(3-alkylthiophene) (P3AT) on Au using a self-assembling technique by X-ray photoelectron spectroscopy (XPS). The XPS spectra in the S 2p region of a P3AT self-assembled monolayer (SAM) on Au were observed at 161.8 (S 2p3/2) and 163.6 eV (S 2p3/2). The former was assigned to the sulfur of the thiolate-gold component and the latter to thiophene sulfur. These results indicate that the sulfur head groups in P3AT cause chemical reactions with gold in the self-assembling process. The chemisorption of polythiophene tightly and easily on the metal surface through chemical bonds will pave the way for the construction of good electric contacts and a controllable modification of electronic state on metal surfaces essential for electronic or electrooptical devices such as light-emitting diodes.
- 2007-12-25
著者
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Iida Takahiro
Graduate School Of National Defense Academy
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Shimomura Takeshi
Graduate School Of Bio-applications And System Engineering Tokyo University Of Agriculture And Techn
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NAKAMURA Tohru
Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Techn
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Ito Kohzo
Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei, Tokyo 184-8588, Japan
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Shimomura Takeshi
Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei, Tokyo 184-8588, Japan
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Sakai Yasuhiro
Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Iida Takahiro
Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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Nakamura Tohru
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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