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EnglishIn the field of direct production of hydrogen from solar energy and water, photocatalytic methods hold great potential especially when metal-free molecular components are preferred. In this work, we have developed a new class of calix[4]arene-based molecular photosensitizers to be used as antenna systems in the photocatalytic production of hydrogen. The structure of the dyes has a typical donor-π-acceptor molecular architecture where a calix[4]arene scaffold is used as an embedded donor. The new materials have been fully characterized in their optical, electrochemical, and photocatalytic properties. The properties conferred by the calix[4]arene donor afforded twice larger performances compared to the corresponding linear system though showing similar quantitative optical properties. The new molecular design paves the way to a new strategy for photocatalytic hydrogen production where the calix[4]arene scaffold can afford more efficient systems and can offer the potential for host-guest supramolecular effects.
Multibranched Calix[4]arene-Based Sensitizers for Efficient Photocatalytic Hydrogen Production / Manfredi, N.; Decavoli, C.; Boldrini, C. L.; Dolla, T. H.; Faroldi, F.; Sansone, F.; Montini, T.; Baldini, L.; Fornasiero, P.; Abbotto, A.. - In: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. - ISSN 1434-193X. - 2021:2(2021), pp. 284-288. [10.1002/ejoc.202001296]
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