scholarly journals Electrochemical Oxidation of Organic Molecules at Lower Overpotential: Accessing Broader Functional Group Compatibility with Electron−Proton Transfer Mediators

2020 ◽  
Vol 53 (3) ◽  
pp. 561-574 ◽  
Author(s):  
Fei Wang ◽  
Shannon S. Stahl
Keyword(s):  
Proton Transfer ◽  
Electrochemical Oxidation ◽  
Organic Molecules ◽  
Functional Group ◽  
Electron Proton Transfer ◽  
Lower Overpotential

scholarly journals Base-enhanced catalytic water oxidation by a carboxylate–bipyridine Ru(II) complex

2015 ◽  
Vol 112 (16) ◽  
pp. 4935-4940 ◽  
Author(s):  
Na Song ◽  
Javier J. Concepcion ◽  
Robert A. Binstead ◽  
Jennifer A. Rudd ◽  
Aaron K. Vannucci ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Proton Transfer ◽  
Water Oxidation ◽  
Proton Acceptor ◽  
Half Time ◽  
X Ray ◽  
X Ray Crystallography ◽  
Buffer Base ◽  
Electron Proton Transfer ◽  
C Nmr

In aqueous solution above pH 2.4 with 4% (vol/vol) CH3CN, the complex [RuII(bda)(isoq)2] (bda is 2,2′-bipyridine-6,6′-dicarboxylate; isoq is isoquinoline) exists as the open-arm chelate, [RuII(CO2-bpy-CO2−)(isoq)2(NCCH3)], as shown by 1H and 13C-NMR, X-ray crystallography, and pH titrations. Rates of water oxidation with the open-arm chelate are remarkably enhanced by added proton acceptor bases, as measured by cyclic voltammetry (CV). In 1.0 M PO43–, the calculated half-time for water oxidation is ∼7 μs. The key to the rate accelerations with added bases is direct involvement of the buffer base in either atom–proton transfer (APT) or concerted electron–proton transfer (EPT) pathways.

scholarly journals Electrochemical Oxidation of Small Organic Molecules on Au Nanoparticles with Preferential Surface Orientation

2015 ◽  
Vol 2 (7) ◽  
pp. 958-962 ◽  
Author(s):  
Javier Monzó ◽  
Yvonne Malewski ◽  
Francisco J. Vidal-Iglesias ◽  
Jose Solla-Gullon ◽  
Paramaconi Rodriguez
Keyword(s):  
Electrochemical Oxidation ◽  
Organic Molecules ◽  
Au Nanoparticles ◽  
Surface Orientation ◽  
Small Organic Molecules

scholarly journals Solvent-dependent transition from concerted electron–proton to proton transfer in photoinduced reactions between phenols and polypyridine Ru complexes with proton-accepting sites

2018 ◽  
Vol 47 (44) ◽  
pp. 15917-15928 ◽  
Author(s):  
Sergei V. Lymar ◽  
Mehmed Z. Ertem ◽  
Dmitry E. Polyansky
Keyword(s):  
Proton Transfer ◽  
Polar Solvent ◽  
Ru Complexes ◽  
Photoinduced Reactions ◽  
Electron Proton Transfer

Transition from photo-induced concerted electron–proton transfer to a proton transfer is enhanced in more polar solvent.

scholarly journals Hydrogen bonding between hydroxylic donors and MLCT-excited Ru(bpy)2(bpz)2+ complex: implications for photoinduced electron–proton transfer

2019 ◽  
Vol 55 (42) ◽  
pp. 5870-5873 ◽  
Author(s):  
Sergei V. Lymar ◽  
Gerald F. Manbeck ◽  
Dmitry E. Polyansky
Keyword(s):  
Free Energy ◽  
Hydrogen Bonding ◽  
Proton Transfer ◽  
Energy Correlation ◽  
Electron Proton Transfer

Rates of electron–proton transfer within the H-bonded exciplexes are evaluated using the free energy correlation with donor's H-bonding acidity.

scholarly journals NH4+ Association and Proton Transfer Reactions With a Series of Organic Molecules

2019 ◽  
Vol 7 ◽  
Author(s):  
Eva Canaval ◽  
Noora Hyttinen ◽  
Benjamin Schmidbauer ◽  
Lukas Fischer ◽  
Armin Hansel
Keyword(s):  
Proton Transfer ◽  
Organic Molecules ◽  
Transfer Reactions ◽  
Proton Transfer Reactions
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