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Host-Guest Interactions in a Metal-Organic Framework Isoreticular Series for Molecular Photocatalytic CO2 Reduction.

ABSTRACT: A strategy to improve homogeneous molecular catalyst stability, efficiency, and selectivity is the immobilization on supporting surfaces or within host matrices. Herein, we examine the co-immobilization of a CO2 reduction catalyst [ReBr(CO)3 (4,4'-dcbpy)] and a photosensitizer [Ru(bpy)2 (5,5'-dcbpy)]Cl2 using the isoreticular series of metal-organic frameworks (MOFs) UiO-66, -67, and -68. Specific host pore size choice enables distinct catalyst and photosensitizer spatial location-either at the outer MOF particle surface or inside the MOF cavities-affecting catalyst stability, electronic communication between reaction center and photosensitizer, and consequently the apparent catalytic rates. These results allow for a rational understanding of an optimized supramolecular layout of catalyst, photosensitizer, and host matrix.

SUBMITTER: Stanley PM 

PROVIDER: S-EPMC8453824 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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Host-Guest Interactions in a Metal-Organic Framework Isoreticular Series for Molecular Photocatalytic CO<sub>2</sub> Reduction.

Stanley Philip M PM   Haimerl Johanna J   Thomas Christopher C   Urstoeger Alexander A   Schuster Michael M   Shustova Natalia B NB   Casini Angela A   Rieger Bernhard B   Warnan Julien J   Fischer Roland A RA  

Angewandte Chemie (International ed. in English) 20210601 33

A strategy to improve homogeneous molecular catalyst stability, efficiency, and selectivity is the immobilization on supporting surfaces or within host matrices. Herein, we examine the co-immobilization of a CO<sub>2</sub> reduction catalyst [ReBr(CO)<sub>3</sub> (4,4'-dcbpy)] and a photosensitizer [Ru(bpy)<sub>2</sub> (5,5'-dcbpy)]Cl<sub>2</sub> using the isoreticular series of metal-organic frameworks (MOFs) UiO-66, -67, and -68. Specific host pore size choice enables distinct catalyst and pho  ...[more]

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