scholarly journals Photoinduced Water Oxidation at the Aqueous GaN (101̅0) Interface: Deprotonation Kinetics of the First Proton-Coupled Electron-Transfer Step

ACS Catalysis ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2317-2323 ◽  
Author(s):  
Mehmed Z. Ertem ◽  
Neerav Kharche ◽  
Victor S. Batista ◽  
Mark S. Hybertsen ◽  
John C. Tully ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Water Oxidation ◽  
Proton Coupled Electron Transfer ◽  
Transfer Step ◽  
Kinetics Of

Entropy and enthalpy contributions to the kinetics of proton coupled electron transfer to the Mn4O4(O2PPh2)6 cubane

2014 ◽  
Vol 16 (24) ◽  
pp. 11843-11847
Author(s):  
Thomas G. Carrell ◽  
Paul F. Smith ◽  
Joseph Dennes ◽  
G. Charles Dismukes
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Hydrogen Atom ◽  
Water Oxidation ◽  
Proton Coupled Electron Transfer ◽  
Kinetics Of ◽  
Natural Photosynthesis

The reaction of a manganese-oxo cubane with hydrogen atom donors effectively models water oxidation and charge transfer in natural photosynthesis.

The role of proton coupled electron transfer in water oxidation

2012 ◽  
Vol 5 (7) ◽  
pp. 7704 ◽  
Author(s):  
Christopher J. Gagliardi ◽  
Aaron K. Vannucci ◽  
Javier J. Concepcion ◽  
Zuofeng Chen ◽  
Thomas J. Meyer
Keyword(s):  
Electron Transfer ◽  
Water Oxidation ◽  
Proton Coupled Electron Transfer

scholarly journals Atomically manipulated proton transfer energizes water oxidation on silicon carbide photoanodes

2018 ◽  
Vol 6 (47) ◽  
pp. 24358-24366 ◽  
Author(s):  
Hao Li ◽  
Huan Shang ◽  
Yuchen Shi ◽  
Rositsa Yakimova ◽  
Mikael Syväjärvi ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Electron Transfer ◽  
Proton Transfer ◽  
Water Oxidation ◽  
Proton Coupled Electron Transfer ◽  
Rate Limiting Step ◽  
Limiting Step ◽  
Rate Limiting

Preferential exposure of Si-face of SiC will mechanistically shift the rate limiting step of water oxidation from sluggish proton-coupled electron transfer on C-face to a more energy-favorable electron transfer.

Aligning Electronic and Protonic Energy Levels of Proton-Coupled Electron Transfer in Water Oxidation on Aqueous TiO2

2014 ◽  
Vol 126 (45) ◽  
pp. 12242-12246 ◽  
Author(s):  
Jun Cheng ◽  
Xiandong Liu ◽  
John A. Kattirtzi ◽  
Joost VandeVondele ◽  
Michiel Sprik
Keyword(s):  
Electron Transfer ◽  
Water Oxidation ◽  
Energy Levels ◽  
Proton Coupled Electron Transfer

scholarly journals Frontispiece: Aligning Electronic and Protonic Energy Levels of Proton-Coupled Electron Transfer in Water Oxidation on Aqueous TiO2

2014 ◽  
Vol 53 (45) ◽  
pp. n/a-n/a
Author(s):  
Jun Cheng ◽  
Xiandong Liu ◽  
John A. Kattirtzi ◽  
Joost VandeVondele ◽  
Michiel Sprik
Keyword(s):  
Electron Transfer ◽  
Water Oxidation ◽  
Energy Levels ◽  
Proton Coupled Electron Transfer

scholarly journals Design and synthesis of benzimidazole phenol-porphyrin dyads for the study of bioinspired photoinduced proton-coupled electron transfer

2019 ◽  
Vol 23 (11n12) ◽  
pp. 1336-1345
Author(s):  
S. Jimena Mora ◽  
Daniel A. Heredia ◽  
Emmanuel Odella ◽  
Uma Vrudhula ◽  
Devens Gust ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Photosystem Ii ◽  
Proton Transfer ◽  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Design And Synthesis ◽  
Proton Coupled Electron Transfer ◽  
Anchoring Groups ◽  
High Redox Potential

Benzimidazole phenol-porphyrin dyads have been synthesized to study proton-coupled electron transfer (PCET) reactions induced by photoexcitation. High-potential porphyrins have been chosen to model P680, the photoactive chlorophyll cluster of photosynthetic photosystem II (PSII). They have either two or three pentafluorophenyl groups at the meso positions to impart the high redox potential. The benzimidazole phenol (BIP) moiety models the Tyr[Formula: see text]-His190 pair of PSII, which is a redox mediator that shuttles electrons from the water oxidation catalyst to P680[Formula: see text]. The dyads consisting of a porphyrin and an unsubstituted BIP are designed to study one-electron one-proton transfer (E1PT) processes upon excitation of the porphyrin. When the BIP moiety is substituted with proton-accepting groups such as imines, one-electron two-proton transfer (E2PT) processes are expected to take place upon oxidation of the phenol by the excited state of the porphyrin. The bis-pentafluorophenyl porphyrins linked to BIPs provide platforms for introducing a variety of electron-accepting moieties and/or anchoring groups to attach semiconductor nanoparticles to the macrocycle. The triads thus formed will serve to study the PCET process involving the BIPs when the oxidation of the phenol is achieved by the photochemically produced radical cation of the porphyrin.

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