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Light-driven Charging of a Molecular Cu(I) Complex for Storage of Photoredox Equivalents and Discharging in the Dark

preprint
submitted on 19.10.2018 and posted on 22.10.2018 by Martin Schulz, Nina Hagmeyer, Frerk Wehmeyer, Benjamin Dietzek
The diurnal day/night cycle presently is a great challenge for the harvest of solar energy rendering suitable energy storage schemes inevitable. In the described experiments a Cu(I) 4H-imidazolate complex is efficiently photoreduced in the presence of a sacrificial donor. The obtained two-electron reduced species is stored for more than 14 hours in the dark. In a dark reaction, the stored photoredox equivalents can be transferred to an electron acceptor while the starting Cu(I) complex is almost completely regained. Repetition of the photoreduction/reoxidation revealed a photoreduction efficiency of 72% after four cycles.

History

Email Address of Submitting Author

martin.schulz.1@uni-jena.de

Institution

Friedrich Schiller University Jena

Country

Germany

ORCID For Submitting Author

0000-0003-4989-5207

Declaration of Conflict of Interest

The authors declare no conflict of interest

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