title: Kinetic isotope effect of proton-coupled electron transfer in a hydrogen bonded phenol-pyrrolidino[60]fullerene.
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.
authors.affiliation: Department of Physics and Astronomy, Faculty of Sciences, VU University, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherland. j.t.m.kennis@vu.nl.
authors.forename: Janneke
authors.initials: J
authors.lastname: Ravensbergen
authors.affiliation: Center for Bioenergy and Photosynthesis, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. Ana.Moore@asu.edu.
authors.forename: Chelsea L
authors.initials: CL
authors.lastname: Brown
authors.affiliation: Center for Bioenergy and Photosynthesis, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. Ana.Moore@asu.edu.
authors.forename: Gary F
authors.initials: GF
authors.lastname: Moore
authors.affiliation: Department of Physics and Astronomy, Faculty of Sciences, VU University, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherland. j.t.m.kennis@vu.nl.
authors.forename: Raoul N
authors.initials: RN
authors.lastname: Frese
authors.affiliation: Department of Physics and Astronomy, Faculty of Sciences, VU University, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherland. j.t.m.kennis@vu.nl.
authors.forename: Rienk
authors.initials: R
authors.lastname: van Grondelle
authors.affiliation: Center for Bioenergy and Photosynthesis, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. Ana.Moore@asu.edu.
authors.forename: Devens
authors.initials: D
authors.lastname: Gust
authors.affiliation: Center for Bioenergy and Photosynthesis, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. Ana.Moore@asu.edu.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Moore
authors.affiliation: Center for Bioenergy and Photosynthesis, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. Ana.Moore@asu.edu.
authors.forename: Ana L
authors.initials: AL
authors.lastname: Moore
authors.affiliation: Department of Physics and Astronomy, Faculty of Sciences, VU University, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherland. j.t.m.kennis@vu.nl.
authors.forename: John T M
authors.initials: JT
authors.lastname: Kennis
mesh_terms: D004579:Electron Transport; D004583:Electrons; D037741:Fullerenes / Q000737:chemistry*; D006860:Hydrogen Bonding; D007554:Isotopes / Q000737:chemistry; D007700:Kinetics; D019800:Phenol / Q000737:chemistry*; D011522:Protons; D011759:Pyrrolidines / Q000737:chemistry*; D013053:Spectrophotometry
chemical_list: D037741:Fullerenes; D007554:Isotopes; D011522:Protons; D011759:Pyrrolidines; D019800:Phenol; C069837:fullerene C60