Synthesis of a Novel Re(I)-Ru(II)-Re(I) Trinuclear Complex as an Effective Photocatalyst for CO2 Reduction

被引：16

作者：

Umemoto, Akinari ^{[1
]}

Yamazaki, Yasuomi ^{[1
,2
]}

Saito, Daiki ^{[1
]}

Tamaki, Yusuke ^{[1
]}

Ishitani, Osamu ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Chem, Meguro Ku, 2-12-1 0 Okayama,E1-9, Tokyo 1528550, Japan

[2] Seikei Univ, Fac Sci & Technol, Dept Mat & Life Sci, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 1808633, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2020年 / 93卷 / 01期

关键词：

Supramolecular photocatalyst; CO2; reduction; Cross-coupling reaction; CARBON-DIOXIDE; METAL-COMPLEXES; SUPRAMOLECULAR PHOTOCATALYSTS; PHOTOCHEMICAL REDUCTION; MULTINUCLEAR COMPLEXES; RHENIUM(I) COMPLEXES; EFFICIENT; WATER; PHOTOSENSITIZERS; BINUCLEAR;

D O I：

10.1246/bcsj.20190284

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Supramolecular photocatalysts, which consist of redox photosensitizer and catalyst units, have recently attracted attention in the field of artificial photosynthesis. Aiming to construct a durable supramolecular photocatalyst for CO2 reduction, a new Re-Ru-Re trinuclear complex was successfully developed, where one Ru unit, acting as photosensitizer, was linked to two Re units, acting as catalysts, through ethylene chains. The novel complex was synthesized by creating two chelate moieties on the ligand of a Ru complex using the Negishi-coupling reaction, which were then coordinated to Re complexes. This trinuclear complex selectively photocatalyzed the reduction of CO2 to CO under visible light irradiation, with high durability compared with the corresponding Ru-Re binuclear complex and a mixed system of model mononuclear complexes. Absorption spectra and mass spectroscopic data of the reaction solutions revealed a rapid consumption of the electrons on the one-electron reduced species of the Ru unit, which led to suppression of the Ru unit decomposition, thereby maintaining its photosensitizing ability and product selectivity.

引用

页码：127 / 137

页数：11

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