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Issue 12, 2015
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Kinetic isotope effect of proton-coupled electron transfer in a hydrogen bonded phenol–pyrrolidino[60]fullerene

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Abstract

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.

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

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Article information


Submitted
07 Jul 2015
Accepted
24 Oct 2015
First published
27 Oct 2015

This article is Open Access

Photochem. Photobiol. Sci., 2015,14, 2147-2150
Article type
Communication
Author version available

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 and J. T. M. Kennis, Photochem. Photobiol. Sci., 2015, 14, 2147
DOI: 10.1039/C5PP00259A

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