Issue 5, 2015

Ru(ii)–Re(i) binuclear photocatalysts connected by –CH2XCH2– (X = O, S, CH2) for CO2 reduction

Abstract

We developed Ru(II)–Re(I) supramolecular photocatalysts in which each metal complex unit is connected by a –CH2XCH2– (X = O, S, CH2) chain. The photocatalyst with X = O exhibited the best photocatalytic efficiency for CO2 reduction in the reported systems using a NAD(P)H model compound as an electron donor because the introduced oxygen atom strengthened the oxidation power of the Ru photosensitizer unit in the excited state and accelerated electron transfer from the one-electron-reduced Ru photosensitizer unit to the Re catalyst unit. In contrast, the catalytic ability of the photocatalyst with X = S rapidly decreased during irradiation because the supramolecular structure split into mononuclear complexes. A detailed mechanism for the efficient photocatalytic reaction involving these supramolecular photocatalysts was investigated for the first time.

Graphical abstract: Ru(ii)–Re(i) binuclear photocatalysts connected by –CH2XCH2– (X = O, S, CH2) for CO2 reduction

Supplementary files

Article information

Article type
Edge Article
Submitted
01 Dec. 2014
Accepted
28 Febr. 2015
First published
02 Marts 2015
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2015,6, 3003-3012

Ru(II)–Re(I) binuclear photocatalysts connected by –CH2XCH2– (X = O, S, CH2) for CO2 reduction

E. Kato, H. Takeda, K. Koike, K. Ohkubo and O. Ishitani, Chem. Sci., 2015, 6, 3003 DOI: 10.1039/C4SC03710C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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