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Creators/Authors contains: "White, Travis A."

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  1. ; ; ; ; ; ; (, Chemical Science)
    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. 
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