The photogeneration of electricity and solar fuels by solar irradiation in photoelectrochemical cells is one of the sectors with the highest growth potential in the decarbonised society. However, the use of different components, in particular photosensitizers and catalysts, can present problems of charge transfer efficiency at the interface, leading to lower final efficiencies. In this work we present novel integrated photosensitizer-catalyst dyads based on robust and, at the same time, flexible host-guest non-covalent interactions through the use of calix[4]arene cavities. Current photogeneration in photoelectrochemical cells showed twice greater efficiency in the integrated calixarene-based host-guest dyads compared to the traditional architecture based on the separate photosensitizer-catalyst pair. Molecular dynamics studies have shown that the enhanced performance originates from an optimization of the distances between the centres of the photosensitizer, catalyst and semiconductor involved in the charge transfer processes, thus allowing a higher final efficiency of the charge photogeneration process.

Decavoli, C., Boldrini, C., Faroldi, F., Baldini, L., Sansone, F., Ranaudo, A., et al. (2022). Calix[4]arene-Based Sensitizers for Host-Guest Supramolecular Dyads for Solar Energy Conversion in Photoelectrochemical Cells. EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, 2022(34) [10.1002/ejoc.202200649].

Calix[4]arene-Based Sensitizers for Host-Guest Supramolecular Dyads for Solar Energy Conversion in Photoelectrochemical Cells

Decavoli, C;Boldrini, CL;Ranaudo, A;Greco, C;Cosentino, U
;
Moro, G;Manfredi, N
;
Abbotto, A
2022

Abstract

The photogeneration of electricity and solar fuels by solar irradiation in photoelectrochemical cells is one of the sectors with the highest growth potential in the decarbonised society. However, the use of different components, in particular photosensitizers and catalysts, can present problems of charge transfer efficiency at the interface, leading to lower final efficiencies. In this work we present novel integrated photosensitizer-catalyst dyads based on robust and, at the same time, flexible host-guest non-covalent interactions through the use of calix[4]arene cavities. Current photogeneration in photoelectrochemical cells showed twice greater efficiency in the integrated calixarene-based host-guest dyads compared to the traditional architecture based on the separate photosensitizer-catalyst pair. Molecular dynamics studies have shown that the enhanced performance originates from an optimization of the distances between the centres of the photosensitizer, catalyst and semiconductor involved in the charge transfer processes, thus allowing a higher final efficiency of the charge photogeneration process.
Articolo in rivista - Articolo scientifico
Calix[4]arene; Dye-sensitized; Molecular dynamics; Photoelectrochemistry; Water splitting;
English
Decavoli, C., Boldrini, C., Faroldi, F., Baldini, L., Sansone, F., Ranaudo, A., et al. (2022). Calix[4]arene-Based Sensitizers for Host-Guest Supramolecular Dyads for Solar Energy Conversion in Photoelectrochemical Cells. EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, 2022(34) [10.1002/ejoc.202200649].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/395295
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