Carbon Dots as Versatile Photosensitizers for Solar-Driven Catalysis with Redox Enzymes
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Abstract
Light-driven enzymatic catalysis is enabled by the productive coupling of a protein to a photosensitizer. Photosensitizers used in such hybrid systems are typically costly, toxic, and/or fragile, with limited chemical versatility. Carbon dots (CDs) are low-cost, nanosized light-harvesters that are attractive photosensitizers for biological systems as they are water-soluble, photostable, nontoxic, and their surface chemistry can be easily modified. We demonstrate here that CDs act as excellent light-absorbers in two semibiological photosynthetic systems utilizing either a fumarate reductase (FccA) for the solar-driven hydrogenation of fumarate to succinate or a hydrogenase (H
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1520-5126
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Biotechnology and Biological Sciences Research Council (BB/K010220/1)
Engineering and Physical Sciences Research Council (EP/K039520/1)
European Commission (624997)