2001 Fiscal Year Final Research Report Summary
Adsorption Behanior of Biomolecule on Slneiconductor and Metal Sunforces.
| Project/Area Number |
12650684
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | Nagoya University |
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Principal Investigator |
YAGI Shinya Nagoya University, School of Engineering, Associate Professor, 工学研究科, 助教授 (20284226)
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| Co-Investigator(Kenkyū-buntansha) |
TANIGUCHI Masaki Hiroshima University, Synchrotron Radiation Center, Professor, 放射光科学研究センター, 教授 (10126120)
MORITA Kenji Nagoya University, School of Engineering, Professor, 工学研究科, 教授 (10023144)
SODA Azuo Nagoya University, School of Engineering, Professor, 工学研究科, 教授 (70154705)
HASHIMOTO Eiji Hiroshima University, Synchrotron Radiation Center, Associate Professor, 放射光科学研究センター, 助教授 (50033907)
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| Project Period (FY) |
2000 – 2001
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| Keywords | Molecularadsorption / Synchrotron radiation / NEXAFS / XPS / Dimethyl sulfide / Ni / Cu / L-cysteine |
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| Research Abstract |
We have studied the (CH_3)_2S/Ni(100) and (CH3)2S/Cu(100) systems using polarization dependent S K-edge Near Edge X-ray Absorption Fine Structure (NEXAFS) and S Is X-ray Photoelectron Spectroscopy (XPS) techniques. Polarization dependence was noticeable in the S K-edge NEXAFS spectra for submonolayer phase. The NEXAFS results imply that the (CH_3)_2S molecule is lying flat on the Ni(100) surface and has some tilt angle of 33°on the Cu(100) surface. As for the Ni(lOO) surface, it is cleared that a surface reaction is higher than the Cu(lOO) surface. Adsorption behavior of a sulfur-containing amino molecule on metal surface has been interested in a bio-catalytic and surface reaction fields. In this study, we have studied an adsorption behavior of the L-cysteine amino acid, which contain the sulfur atom, on polycrystalline Cu, Mo and Ni surfaces by S Kiedge NEXAFS and XPS techniques. Noticeable difference can be seen at the first feature (1s-σ(S-C)) of the NEXAFS spectra. Thess results imply that the L-cysteine molecule is more active on the Ni surface in comparison with the Cu or Mo surfaces. It seems that the charge transfer occurs from the substrate to the sulfur atom of the L-cysteine molecule for the Ni adsorption system.
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Research Products
(10 results)
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[Publications] S. Yagi, K, Matsumura, Y, Nakano, E. Ikenaga,S. A. Sardar, K, Soda, K. Morita, E. Hashimotob and M. Taniguchi: "S K-edge NEXAFS Study of Sulfur-containing Amino Acid L-cysteine on Transition Metal,"Surface and Interface Anaiysi. (in press). (2002)
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