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Open Access Photoinduced Charge Accumulation in Molecular Systems

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Fuel-forming reactions such as CO2 reduction or water splitting require multiple redox equivalents. When aiming at light-driven production of energy-rich chemicals, nowadays often referred to as solar fuels, it therefore becomes important to master the photoinduced accumulation of electrons or holes on individual molecular components. Featured in this short review are some of the key molecular systems explored in this emerging field of research. This includes for example a trinuclear Ru(II)-Rh(III)-Ru(III) complex or an Ir(III)-sensitized polyoxotungstate hybrid, but also several systems in which electron or hole collection occurs at organic moieties such as perylenebis(dicarboximide), quinone-containing or oligotriarylamine-based units. In many cases the photodriven accumulation of charge requires the use of sacrificial electron donors, but there exist also a handful of studies in which redox equivalents can be accumulated without the use of such additives.

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Keywords: ELECTRON TRANSFER; PHOTOCHEMISTRY; PROTON TRANSFER; SOLAR FUEL; TRANSIENT ABSORPTION

Document Type: Research Article

Affiliations: 1: Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland 2: Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland. [email protected]

Publication date: February 1, 2015

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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