Kinetic isotope effect of proton-coupled electron transfer in a hydrogen bonded phenol-pyrrolidino[60]fullerene

J. Ravensbergen, C.L. Brown, G.F. Moore, R.N. Frese, R. van Grondelle, D. Gust, T.A. Moore, A.L. Moore, J.T.M. Kennis

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Proton-coupled electron transfer (PCET) plays a central role in photosynthesis and potentially in solar-to-fuel systems. We report a spectroscopy study on a phenol-pyrrolidino[60]fullerene. Quenching of the singlet excited state from 1 ns to 250 ps is assigned to PCET. A H/D exchange study reveals a kinetic isotope effect (KIE) of 3.0, consistent with a concerted PCET mechanism.
Original languageEnglish
Pages (from-to)2147-2150
JournalPhotochemical and Photobiological Sciences
Issue number12
Publication statusPublished - 2015


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