Volume 133, Issue 11 pp. 6030-6034
Forschungsartikel

Electrochemical Polymerization Provides a Function-Integrated System for Water Oxidation

Hikaru Iwami

Hikaru Iwami

Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan

Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science (IMS), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, 444-8787 Japan

Department of Structural Molecular Sciences, SOKENDAI (The Graduate University for Advanced Studies), Shonan village, Hayama, Kanagawa, 240-0193 Japan

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Dr. Masaya Okamura

Dr. Masaya Okamura

Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science (IMS), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, 444-8787 Japan

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Prof. Dr. Mio Kondo

Corresponding Author

Prof. Dr. Mio Kondo

Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan

JST, PRESTO, 4-1-8 Honcho, Kawaguchi, 332-0012 Japan

Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka, 565-0871 Japan

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Prof. Dr. Shigeyuki Masaoka

Corresponding Author

Prof. Dr. Shigeyuki Masaoka

Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871 Japan

Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka, 565-0871 Japan

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First published: 30 November 2020
Citations: 5

Abstract

Water oxidation is a key reaction in natural and artificial photosynthesis. In nature, the reaction is efficiently catalyzed by a metal-complex-based catalyst surrounded by hole-transporting amino acid residues. However, in artificial systems, there is no example of a water oxidation system that has a catalytic center surrounded by hole transporters. Herein, we present a facile strategy to integrate catalytic centers and hole transporters in one system. Electrochemical polymerization of a metal-complex-based precursor afforded a polymer-based material (Poly-1). Poly-1 exhibited excellent hole-transporting ability and catalyzed water oxidation with high performance. It was also revealed that the catalytic activity was almost completely suppressed in the absence of the hole-transporting moieties. The present study provides a novel strategy for constructing efficient molecule-based systems for water oxidation.

Conflict of interest

The authors declare no conflict of interest.

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