A supramolecular photocatalyst composed of a polyoxometalate and a photosensitizing water-soluble porphyrin diacid for the oxidation of organic substrates in water

Tomoya Ishizuka; Shumpei Ohkawa; Hidemi Ochiai; Muneaki Hashimoto; Kei Ohkubo; Hiroaki Kotani; Masahiro Sadakane; Shunichi Fukuzumi; Takahiko Kojima

doi:10.1039/C8GC00295A

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A supramolecular photocatalyst composed of a polyoxometalate and a photosensitizing water-soluble porphyrin diacid for the oxidation of organic substrates in water†

Tomoya Ishizuka,

^a Shumpei Ohkawa,^a Hidemi Ochiai,^a Muneaki Hashimoto,^a Kei Ohkubo,^bc Hiroaki Kotani,

^a Masahiro Sadakane,^d Shunichi Fukuzumi

^ce and Takahiko Kojima

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba and CREST (JST), 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
E-mail: kojima@chem.tsukuba.ac.jp

^b Institute for Advanced Co-Creation Studies and Institute for Academic Initiatives, Osaka University, Suita, Osaka 565-0871, Japan

^c Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea

^d Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Japan

^e Faculty of Science and Technology, Meijo University, Tempaku, Nagoya, Aichi 468-8502, Japan

Abstract

A diprotonated form of a cationic water-soluble saddle-distorted porphyrin (H₄1⁶⁺) forms stable supramolecular assemblies with multianionic polyoxometalates (POMs) by electrostatic interactions. An assembly of H₄1⁶⁺ with a Ru-substituted POM can perform photocatalytic oxidation of organic substrates in water under visible-light irradiation through adduct formation of the H₄1⁶⁺ moiety with an oxidant.

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DOI: https://doi.org/10.1039/C8GC00295A
Article type: Communication
Submitted: 27 Jan 2018
Accepted: 26 Mar 2018
First published: 27 Mar 2018

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Green Chem., 2018,20, 1975-1980

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A supramolecular photocatalyst composed of a polyoxometalate and a photosensitizing water-soluble porphyrin diacid for the oxidation of organic substrates in water

T. Ishizuka, S. Ohkawa, H. Ochiai, M. Hashimoto, K. Ohkubo, H. Kotani, M. Sadakane, S. Fukuzumi and T. Kojima, Green Chem., 2018, 20, 1975 DOI: 10.1039/C8GC00295A

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Green Chemistry

A supramolecular photocatalyst composed of a polyoxometalate and a photosensitizing water-soluble porphyrin diacid for the oxidation of organic substrates in water†

Abstract

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A supramolecular photocatalyst composed of a polyoxometalate and a photosensitizing water-soluble porphyrin diacid for the oxidation of organic substrates in water

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