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

Janneke Ravensbergen, Chelsea L. Brown, Gary Moore, Raoul N. Frese, Rienk Van Grondelle, Devens Gust, Thomas Moore, Ana Moore, John 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 (US)
Pages (from-to)2147-2150
Number of pages4
JournalPhotochemical and Photobiological Sciences
Issue number12
StatePublished - Jan 1 2015


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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