2001 Fiscal Year Final Research Report Summary
Dynamic Aspects of the Formation of Molecular Assemblies at Single Crystal Electrode | Solution Interfaces
| Project/Area Number |
12450344
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
工業物理化学
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
OKAJIMA Takeyoshi Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Research Associate, 理工学研究科, 助手 (70194347)
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| Co-Investigator(Kenkyū-buntansha) |
OHSAKA Takeo Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Associate Professor, 大学院・総合理工学研究科, 教授 (80152099)
KITAMURA Fusao Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Associate Professor, 大学院・総合理工学研究科, 助教授 (00224973)
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| Project Period (FY) |
2000 – 2001
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| Keywords | single crystal electrode / self assembled monolayer / dynamics / infrared spectroscopy |
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| Research Abstract |
We have succeeded to obtain molecular information about the mercury electrode | electrolyte solution interface using in situ infrared reflection absorption spectroscopic technique with an amalgamated gold electrode. It was indicated that perchlorate anions, which has been recognized to be weakly bounded to the mercury surface, can adsorb at potentials more positive than the pzc of the electrode. The structural change of water molecules in the double layer was also investigated. In addition, the adsorption behavior of carbonate anions at single crystal gold electrode surfaces was studied both in electrochemical and spectroscopic techniques.
Adsorption of a series of symmetric alkyl viologens on single crystal gold, mercury and highly oriented pyrolytic graphite (HOPG) electrodes was studied. Molecular orientations of adsorbed viologens were found to be strongly dependent on both the electrode materials and the atomic surface structures. The characteristic electrochemical responses observed at each electrode were explained in terms of the order structures of adsorbed viologens.
Anion recognition of SAMs of nickel azamacrocyclic compounds on the gold electrode was studied. Electrochemical investigations revealed that these compounds can sense various non-electroactive anions. A sensing mechanism based on potential-dependent coordination of anions to the nickel(III) was proposed. A SAM of 4-aminothiophenol undergoes oxidative dimerization reaction to form an electroactive species. The reaction process was monitored for the first time by time-resolved infrared spectroscopy.]
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Research Products
(12 results)
