Development of efficient heterodinuclear water oxidation catalysts based on intramolecular O-O bond formation between different metal ions

2019 Fiscal Year Final Research Report

• Project/Area Number: 19K21136
• Project/Area Number (Other): 18H05990 (2018)
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund (2019); Single-year Grants (2018)
• Review Section: 0502:Inorganic/coordination chemistry, analytical chemistry, inorganic materials chemistry, energy-related chemistry, and related fields
• Research Institution: Niigata University
• Principal Investigator: Tsubonouchi Yuta 新潟大学, 自然科学系, 特任助教 (90823972)
• Project Period (FY): 2018-08-24 – 2020-03-31
• Keywords: 人工光合成 / 水の酸化反応 / 二核錯体 / 異種金属錯体 / 反応機構解析

Outline of Final Research Achievements

This study focuses on the development of efficient water oxidation catalysts based on intramolecular O-O bond formation. We newly synthesized a dinuclear ruthenium complex having an organic bridging ligand and immobilized it on a carbon electrode using hydrophobic interactions. The molecular anode shows a remarkable activity and low overpotential for water oxidation. Furthermore, we successfully prepared and characterized a new series of heterodinuclear complexes inspired by the oxygen-evolving complex of photosystem II.

Free Research Field

錯体化学

Academic Significance and Societal Importance of the Research Achievements

本研究では高活性な分子性水の酸化アノードの開発に成功した。これは人工光合成研究の進展に貢献する重要な成果である。また、異種金属二核錯体の合成とその特性評価は、生体の異種金属酵素の反応を解き明かす上で、有用な示唆を与えると期待される。