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Title: Concerted Electron-Nuclear Motion in Proton-Coupled Electron Transfer-Driven Grotthuss-Type Proton Translocation

Journal Article · · Journal of Physical Chemistry Letters
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [1]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [2];  [4]; ORCiD logo [4]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]
  1. Department of Chemistry, University of California, Berkeley, California 94720, United States, Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States, Kavli Energy Nanoscience Institute at Berkeley, Berkeley, California 94720, United States
  2. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
  3. Department of Chemistry, University of California, Berkeley, California 94720, United States, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
  4. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States, The Biodesign Institute Center for Applied Structural Discovery (CASD), Tempe, Arizona 85287, United States

Photoinduced proton-coupled electron transfer and long-range two-proton transport via a Grotthuss-type mechanism are investigated in a biomimetic construct. The ultrafast, nonequilibrium dynamics are assessed via two-dimensional electronic vibrational spectroscopy, in concert with electrochemical and computational techniques. A low- frequency mode is identified experimentally and found to promote double proton and electron transfer, supported by recent theoretical simulations of a similar but abbreviated (non-photoactive) system. Excitation frequency peak evolution and center line slope dynamics show direct evidence of strongly coupled nuclear and electronic degrees of freedom, from which we can conclude that the double proton and electron transfer processes are concerted (up to an uncertainty of 24 fs). The nonequilibrium pathway from the photoexcited Franck-Condon region to the E2PT state is characterized by an ~110 fs time scale. This study and the tools presented herein constitute a new window into hot charge transfer processes involving an electron and multiple protons.

Research Organization:
University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Arizona State Univ., Tempe, AZ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Science Foundation (NSF); National Institutes of Health (NIH), National Institute of General Medical Sciences (NIGMS); Japan Society for the Promotion of Science (JSPS); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
FG02-03ER15393; SC0021186; DEAC02 05CH11231; AC02-05CH11231; DGE 1752814; F32GM142231
OSTI ID:
1867899
Alternate ID(s):
OSTI ID: 1870112; OSTI ID: 1896690; OSTI ID: 1906923
Journal Information:
Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Vol. 13 Journal Issue: 20; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (38)

Energetics of proton release on the first oxidation step in the water-oxidizing enzyme journal October 2015
Coupling of Phosphorylation to Electron and Hydrogen Transfer by a Chemi-Osmotic type of Mechanism journal July 1961
Nonequilibrium Dynamics of Proton-Coupled Electron Transfer in Proton Wires: Concerted but Asynchronous Mechanisms journal September 2020
Radical Initiation in the Class I Ribonucleotide Reductase:  Long-Range Proton-Coupled Electron Transfer? journal June 2003
Mechanism of Radical Formation in the H-Bond Network of D1-Asn298 in Photosystem II journal July 2018
Concerted One-Electron Two-Proton Transfer Processes in Models Inspired by the Tyr-His Couple of Photosystem II journal April 2017
Progress Toward a Molecular Mechanism of Water Oxidation in Photosystem II journal May 2017
Two-dimensional electronic–vibrational spectroscopy: Exploring the interplay of electrons and nuclei in excited state molecular dynamics journal July 2021
Infrared spectra of pyridinium salts in solution—I. The region of middle frequencies journal January 1982
PCET-Based Ligand Limits Charge Recombination with an Ir(III) Photoredox Catalyst journal August 2021
Solvent Mediated Excited State Proton Transfer in Indigo Carmine journal May 2020
Controlling Proton-Coupled Electron Transfer in Bioinspired Artificial Photosynthetic Relays journal October 2018
Vibronic mixing enables ultrafast energy flow in light-harvesting complex II journal March 2020
Proton-Coupled Electron Transfer in Biology: Results from Synergistic Studies in Natural and Model Systems journal June 2009
Electron–Nuclear Dynamics Accompanying Proton-Coupled Electron Transfer journal February 2021
Two-Dimensional Electronic–Vibrational Spectroscopy Reveals Cross-Correlation between Solvation Dynamics and Vibrational Spectral Diffusion journal November 2020
D1-Asn-298 in photosystem II is involved in a hydrogen-bond network near the redox-active tyrosine Y Z for proton exit during water oxidation journal October 2017
Biochemistry and Theory of Proton-Coupled Electron Transfer journal January 2014
Proton-Coupled Electron Transfer journal November 2007
The role of mixed vibronic Qy-Qx states in green light absorption of light-harvesting complex II journal November 2020
Role of Intact Hydrogen-Bond Networks in Multiproton-Coupled Electron Transfer journal December 2020
Et tu, Grotthuss! and other unfinished stories journal August 2006
Reaction dynamics and proton coupled electron transfer: Studies of tyrosine-based charge transfer in natural and biomimetic systems journal January 2015
Solar fuels and feedstocks: the quest for renewable black gold journal January 2021
Meeting the Global Food Demand of the Future by Engineering Crop Photosynthesis and Yield Potential journal March 2015
Vibrational Spectra of Pyridinium Salts journal October 1961
Proton-Coupled Electron Transfer in Solution, Proteins, and Electrochemistry journal November 2008
Redesigning photosynthesis to sustainably meet global food and bioenergy demand journal June 2015
Design and synthesis of benzimidazole phenol-porphyrin dyads for the study of bioinspired photoinduced proton-coupled electron transfer journal December 2019
Correlating the motion of electrons and nuclei with two-dimensional electronic-vibrational spectroscopy journal June 2014
Proton-Coupled Electron Transfer in Artificial Photosynthetic Systems journal January 2018
Diffusion-free Grotthuss topochemistry for high-rate and long-life proton batteries journal January 2019
The Possible Role of Proton-Coupled Electron Transfer (PCET) in Water Oxidation by Photosystem II journal July 2007
Comparing Photosynthetic and Photovoltaic Efficiencies and Recognizing the Potential for Improvement journal May 2011
Two-dimensional electronic-vibrational spectroscopic study of conical intersection dynamics: an experimental and electronic structure study journal January 2019
A Bioinspired Construct That Mimics the Proton Coupled Electron Transfer between P680 •+ and the Tyr Z -His190 Pair of Photosystem II journal August 2008
Proton-Coupled Electron Transfer Drives Long-Range Proton Translocation in Bioinspired Systems journal August 2019
Multicomponent Quantum Chemistry: Integrating Electronic and Nuclear Quantum Effects via the Nuclear–Electronic Orbital Method journal April 2020

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