2007 Fiscal Year Final Research Report Summary
Bottom-up synthesis and chemical functions of heterostructures of metal-cluster complexes
| Project/Area Number |
16550048
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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 |
Inorganic chemistry
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| Research Institution | Kyushu University (2005-2007)
Hokkaido University (2004) |
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Principal Investigator |
ABE Masaaki Kyushu University, Graduate School of Engineering, Associate Professor (90260033)
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| Project Period (FY) |
2004 – 2007
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| Keywords | Ruthenium / Surface / Layered structures / Proton-coupled electron transfer / Dinuclear complexes / Trinuclear complexes / Porphyrin / Corrin complexes |
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| Research Abstract |
This project has explored synthesis and characterizations of new potential-gradient molecular architectures where multiple units of redox-active moieties (including multinuclear complexes and organic ligands)are built up on Au electrode surfaces in a well-defined sequence. Here we have focused on the construction of molecular systems in which two different metal-cluster units are linked by a bridging ligand on a surface of Au(111) electrode. The hetero-molecular layers have been prepared by immersing an Au (111) electrode covered with the H_2O-terminated triruthenium SAM into a CH_2Cl_2 solution of a new ruthenium dimer. Here, the Ru_3 unit(bottom layer)and the Ru_2 unit (upper layer) are linked with 4,4'-bpy. Owing to the nature of proton-coupled electron transfer reaction in the ruthenium dimer, it was demonstrated that the potential gradient of molecular wire was controlled by pH of the electrolyte media in a reversible manner. Direct and facile immobilization of a solvent-terminated new diruthenium complex onto organic SAM was also demonstrated. For the triruthenium complex SAM, we examined electrolyte anion effects in redox potentials, reactivity of Ru_3 SAM with gaseous molecules such as CO and NO,^3 and photoreactivity. Another achievement in this project was a successful synthetic incorporation of a series of terapyrrol ligands and their metal complexes into the triruthenium complex.
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Research Products
(25 results)
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[Journal Article] Spontaneous Rapid Growth of Triruthenium Cluster Multilayers on Gold Surface.Cyclic Voltammetric in situ Monitoring and AFM Characterization2008
Author(s)
Takayuki, Michi, Masaaki, Abe, Satoru, Takakusagi, Masako, Kato, Kohei, Uosaki, Yoichi, Sasaki
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Journal Title
Chem.Lett. 37(6)
Pages: 576-577
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Disproportionation Reaction of Seven-coordinate [ReVO(tpen)]3+into[ReIVO(tpen)]2+and[ReVII(O)3(tpenH-κ3N,N'',N''')]2+where tpen is N,N,N',N'-Tetrakis(2-pyridylmethyl)ethylenediamine2006
Author(s)
Toshihiro, Tabeya, Masaaki, Abe, Yoichi, Sasaki
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Journal Title
Chem.Lett. 35(9)
Pages: 1066-1067
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Mixed ReVII-FeIII and ReVII-CuII Complexes Prepared by the Use of the Complex Ligand[Re(O)3(tpenH-κ3N,N'',N''')]2+(tpen=N,N,N',N'-Tetrakis(2-pyridylmethyl)ethylenediamine)2006
Author(s)
Toshihiro, Tabeya, Masaaki, Abe, Yoichi, Sasaki
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Journal Title
Bull.Chem.Soc.Jpn. 79(9)
Pages: 1398-1403
Description
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[Journal Article] Oxidation States and CO Ligand Exchange Kinetics in a Self-Assembled Monolayer of a Triruthenium Cluster Studied by in situ Infrared Spectroscopy2005
Author(s)
Wei, Zhou, Shen, Ye, Masaaki, Abe, Takuma, Nishida, Kohei, Uosaki, Masatoshi, Osawa, Yoichi, Sasaki
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Journal Title
Chem.Eur.J. 11(17)
Pages: 5040-5054
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Interfacial Electron-Transfer and Ligand-Dissociation Characteristics of Layer-by-Layer Nanoarchitectures Constructed from Ruthenium Cluster Molecules2005
Author(s)
Takayuki, Michi, Masaaki, Abe, Shen, Ye, Masatoshi, Osawa, Toshihiro, Kondo, Kohei, Uosaki, Yoichi, Sasaki
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Journal Title
ECS Proceedings Volume, Electrode Processes VII
Pages: 116-131
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] X-ray Structure and Electrochemical Properties of a Tpen-Bridged Hetero-Binuclear Complex fac-,fac-[ReVIIO3(μ-tpen)ReI(CO)3](PF6)2 where Tpen Is N,N,N',N'-T etrakis(2-pyridylmethyl)ethylenediamine2005
Author(s)
Toshihiro, Tabeya, Masaaki, Abe, Ayako, Mitani, Kiyoshi, Tsuge, Yoichi, Sasaki
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Journal Title
J.Nucl.Radiochem.Sci. 6(3)
Pages: 157-159
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Surface Coordination of Nitric Oxide to a Self-Assembled Monolayer of a Triruthenium Cluster : An in situ Infrared Spectroscopic Study
Author(s)
Shen, Ye, Wei, Zhou, Yi, Zhang, Masaaki, Abe, Kohei, Uosaki, Masatoshi, Osawa, Yoichi, Sasaki
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Journal Title
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