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- Title
Amphiphilic Polycarbonate Micellar Rhenium Catalysts for Efficient Photocatalytic CO<sub>2</sub> Reduction in Aqueous Media.
- Authors
Ren, Fang‐Yu; Chen, Kaihong; Qiu, Li‐Qi; Chen, Jin‐Mei; Darensbourg, Donald J.; He, Liang‐Nian
- Abstract
A triblock amphiphilic polymer derived from the copolymerization of CO2 and epoxides containing a bipyridine rhenium complex in its backbone is shown to effectively catalyze the visible‐light‐driven reduction of CO2 to CO. This polymer provides uniformly spherical micelles in aqueous solution, where the metal catalyst is sequestered in the hydrophobic portion of the nanostructured micelle. CO2 to CO reduction occurs in an efficient visible‐light‐driven process in aqueous media with turnover numbers up to 110 (>99 % selectivity) in the absence of a photosensitizer, which is a 37‐fold enhancement over the corresponding molecular rhenium catalyst in organic solvent. Notably, the amphiphilic polycarbonate micelle rhenium catalyst suppresses H2 generation, presumably by preventing deactivation of the active catalytic center by water.
- Subjects
RHENIUM catalysts; POLYCARBONATES; TURNOVER frequency (Catalysis); METAL catalysts; MICELLES; COORDINATION polymers; PHOTOREDUCTION; ORGANIC solvents
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 27, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202200751