Effect of hydroxylic additives on the electrochemical reduction of some azobenzenes

Sánchez, Pablo D. Astudillo; Evans, Dennis H.

doi:10.1016/j.jelechem.2009.10.016

Journal of Electroanalytical Chemistry

2010

DOI: 10.1016/j.jelechem.2009.10.016

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Effect of hydroxylic additives on the electrochemical reduction of some azobenzenes

Pablo D. Astudillo Sánchez¹,

Dennis H. Evans²

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Cited by 6 publications

References 39 publications

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An aqueous proton battery under alkaline electrolyte

Dong,

Ren,

Yang

et al. 2025

Energy Storage Materials

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An aqueous proton battery under alkaline electrolyte

Dong,

Ren,

Yang

et al. 2025

Energy Storage Materials

View full text Add to dashboard Cite

Ab Initio Kinetics of Electrochemical Reactions Using the Computational Fc⁰/Fc⁺ Electrode

Kramarenko,

Sharapa,

Pidko

et al. 2024

J. Phys. Chem. A

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The current state-of-the-art electron-transfer modeling primarily focuses on the kinetics of charge transfer between an electroactive species and an inert electrode. Experimental studies have revealed that the existing Butler−Volmer model fails to satisfactorily replicate experimental voltammetry results for both solution-based and surface-bound redox couples. Consequently, experimentalists lack an accurate tool for predicting electron-transfer kinetics. In response to this challenge, we developed a density functional theory-based approach for accurately predicting current peak potentials by using the Marcus−Hush model. Through extensive cyclic voltammetry simulations, we conducted a thorough exploration that offers valuable insights for conducting well-informed studies in the field of electrochemistry.

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The Role of H-Bonding in Nonconcerted Proton-Coupled Electron Transfer: Explaining the Voltammetry of Phenylenediamines in the Presence of Weak Bases in Acetonitrile

et al. 2019

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The kinetics of many proton-coupled electron transfer (PCET) reactions cannot be adequately described by stepwise proton and electron transfer. Concerted electron− proton transfer (CPET) is another possibility, but examples exist where stepwise mechanisms are not viable yet there is no compelling evidence for CPET. This study investigates such a reaction, the oxidation of an NH-containing phenylenediamine radical cation, H 2 PD + , in the presence of pyridines in acetonitrile, using CV and UV/vis spectroelectrochemistry. As observed previously, the E 1/2 for the radical oxidation jumps to a considerably more negative potential upon addition of 1 equiv of pyridine. The CV wave broadens but stays chemically reversible. Further addition of pyridine leads to smaller E 1/2 shifts with continued reversibility. Different explanations have been put forth for this behavior; however, this study provides strong evidence that the E 1/2 shift can be completely explained by the overall reaction being H 2 PD + + pyr − e − → HPD + + Hpyr + . Classic stepwise proton−electron transfer cannot explain the reversibility, but it can be explained by a "wedge" scheme mechanism in which electron and proton transfer occurs in a stepwise fashion within the H-bond complex formed as an intermediate in proton transfer. This result points to the important role H-bonding may play in PCET even without CPET.

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Effect of hydroxylic additives on the electrochemical reduction of some azobenzenes

Cited by 6 publications

References 39 publications

An aqueous proton battery under alkaline electrolyte

An aqueous proton battery under alkaline electrolyte

Ab Initio Kinetics of Electrochemical Reactions Using the Computational Fc⁰/Fc⁺ Electrode

The Role of H-Bonding in Nonconcerted Proton-Coupled Electron Transfer: Explaining the Voltammetry of Phenylenediamines in the Presence of Weak Bases in Acetonitrile

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Effect of hydroxylic additives on the electrochemical reduction of some azobenzenes

Cited by 6 publications

References 39 publications

An aqueous proton battery under alkaline electrolyte

An aqueous proton battery under alkaline electrolyte

Ab Initio Kinetics of Electrochemical Reactions Using the Computational Fc0/Fc+ Electrode

The Role of H-Bonding in Nonconcerted Proton-Coupled Electron Transfer: Explaining the Voltammetry of Phenylenediamines in the Presence of Weak Bases in Acetonitrile

Contact Info

Product

Resources

About

Ab Initio Kinetics of Electrochemical Reactions Using the Computational Fc⁰/Fc⁺ Electrode