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Investigating comproportionation in multielectron transfers via UV–visible spectroelectrochemistry: the electroreduction of anthraquinone-2-sulfonate in aqueous media

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dc.contributor.authorRomay García, Luis
dc.contributor.authorGonzález Sánchez, Joaquín
dc.contributor.authorMolina Gómez, Ángela
dc.contributor.authorLaborda Ochando, Eduardo
dc.contributor.departmentQuímica Física
dc.contributor.otherFacultad de Química
dc.date.accessioned2026-01-25T21:19:39Z
dc.date.available2026-01-25T21:19:39Z
dc.date.copyright© 2022 American Chemical Society
dc.date.issued2022-08-22
dc.description.abstractUV–vis spectroelectrochemistry is assessed as a tool for the diagnosis and quantitative in situ investigation of the incidence of comproportionation in multielectron transfer processes. Thus, the sensitivity of the limiting current chronoabsorptometric signals related to the different redox states to the comproportionation kinetics is studied theoretically for different working modes (normal and parallel light beam arrangements) and mass transport regimes (from semi-infinite to thin layer diffusion). The theoretical results are applied to the spectroelectrochemical study of the two-electron reduction of the anthraquinone-2-sulfonate in alkaline aqueous solution, tuning the thermodynamic favorability of the comproportionation reaction through the electrolyte cation. The quantitative analysis of the experimental results reveals the occurrence of comproportionation in the three media examined, showing different kinetics depending on the cationic species in solution.
dc.formatapplication/pdf
dc.format.extent22
dc.identifier.citationAnalytical Chemistry 94 (2022) 12152−12158
dc.identifier.doihttps://doi.org/10.1021/acs.analchem.2c02523
dc.identifier.eissn1520-6882
dc.identifier.issn0003-2700
dc.identifier.urihttp://hdl.handle.net/10201/193369
dc.languageeng
dc.publisherACS Publications
dc.relationFundación Séneca de la Región de Murcia (Project 19887/GERM/15); Ministerio de Ciencia e Innovación (Grant PID2019-106097GB-I00/AEI/10.13039/501100011033)
dc.relation.publisherversionhttps://pubs.acs.org/doi/10.1021/acs.analchem.2c02523
dc.rightsAttribution-NonCommercial-NoDerivates 4.0 International*
dc.rights.accessRightsinfo:eu-repo/semantics/closedAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAbsorption
dc.subjectDiffusion
dc.subjectElectrodes
dc.subjectKinetics
dc.subjectRedox reactions
dc.subject.odsNo relacionado con ningún objetivo de desarrollo sostenible
dc.titleInvestigating comproportionation in multielectron transfers via UV–visible spectroelectrochemistry: the electroreduction of anthraquinone-2-sulfonate in aqueous media
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
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