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Enhanced photoreduction of water catalyzed by a cucurbit[8]uril-secured platinum dimer Rabbani, Ramin Saeedi, Sima Nazimuddin, Md Barbero San Juan, Héctor Kyritsakas, Nathalie White, Travis A. Masson, Eric Producción Científica A cucurbit[8]uril (CB[8])-secured platinum terpyridyl chloride dimer was used as a photosensitizer and hydrogen-evolving catalyst for the photoreduction of water. Volumes of produced hydrogen were up to 25 and 6 times larger than those obtained with the corresponding free and cucurbit[7]uril-bound platinum monomer, respectively, at equal Pt concentration. The thermodynamics of the proton-coupled electron transfer from the Pt(II)–Pt(II) dimer to the corresponding Pt(II)–Pt(III)–H hydride key intermediate, as quantified by density functional theory, suggest that CB[8] secures the Pt(II)–Pt(II) dimer in a particularly reactive conformation that promotes hydrogen formation. 2024-01-30T15:23:28Z 2024-01-30T15:23:28Z 2021 info:eu-repo/semantics/article Chem. Sci., 2021, 12, 15347 2041-6520 https://uvadoc.uva.es/handle/10324/65371 10.1039/d1sc03743a 15347 46 15352 Chemical Science 12 2041-6539 eng https://pubs.rsc.org/en/content/articlelanding/2021/sc/d1sc03743a info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/ Attribution-NonCommercial-NoDerivs 3.0 Unported Royal Society of Chemistry SI