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PHOTOREDOX CATALYSIS

A handle on charge reorganization

Nature Chemistry volume 14, pages 720–722 (2022)Cite this article

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Photoredox catalysts offer a promising approach to performing reactions with high energetic requirements, however, the influence of solvent and counter ions is not fully understood. Now, a microwave-based technique is shown to give direct insight into their effects on charge reorganization during catalysis.

The rearrangement of charge is a central aspect in many light-driven processes in biology, chemistry and materials science with the absorption of light often triggering a plethora of processes during which electrons — and often nuclei — reorganize in molecules. Clear examples are found in natural photosynthesis, in which a key step is the formation of a charge-separated state, and in organic solar cells, where the interface between an electron-donating and an accepting material induces the formation of isolated charges. The time-resolved detection of such charge rearrangement is usually indirect, for instance, exploiting changes in optical absorption that characterize the different species that are formed, but the assignment of optical signatures to specific species can be difficult to do in an unambiguous way.

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Fig. 1: Structure of photoredox catalysts.

adapted from ref. 1., Springer Nature Ltd.

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  1. Department of Chemical Engineering, Delft University of Technology, Delft, The Netherlands

    Ferdinand C. Grozema

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  1. Ferdinand C. Grozema
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Correspondence to Ferdinand C. Grozema.

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The author declares no competing interests.

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Grozema, F.C. A handle on charge reorganization. Nat. Chem. 14, 720–722 (2022). https://doi.org/10.1038/s41557-022-00987-0

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  • DOI: https://doi.org/10.1038/s41557-022-00987-0

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