Kinetic isotope effect of proton-coupled electron transfer in a hydrogen bonded phenol–pyrrolidino[60]fullerene. Issue 12 (30th October 2015)

• Record Type: Journal Article
• Authors: Ravensbergen, Janneke; Brown, Chelsea L.; Moore, Gary F.; Frese, Raoul N.; van Grondelle, Rienk; Gust, Devens; Moore, Thomas A.; Moore, Ana L.; Kennis, John T. M.
• Is Part Of: Photochemical & photobiological sciences. Volume 14:Issue 12(2015:Dec.)
• Page Start: 2147
• Page End: 2150
• Publication Date: 2015-10-30
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; 541.35
• DOI: 10.1039/c5pp00259a
• Languages: English
• ISSNs: 1474-905X

Abstract

Abstract : Proton-coupled electron transfer (PCET) plays a central role in photosynthesis and potentially in solar-to-fuel systems. 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.