Show simple item record

dc.contributor.authorGaroz Ruiz, Jesús 
dc.contributor.authorGuillen Posteguillo, Carlos 
dc.contributor.authorHeras, Aránzazu 
dc.contributor.authorColina, Álvaro 
dc.date.accessioned2018-09-12T11:40:48Z
dc.date.issued2018-01
dc.identifier.issn1388-2481
dc.identifier.urihttp://hdl.handle.net/10259/4943
dc.description.abstractUV–Vis absorption thin-layer spectroelectrochemistry greatly contributes to the assessment of parameters of electron-transfer reactions by providing electrochemical and spectroscopic information obtained simultaneously in a confined space around the working electrode. In this work we present an ingenious modification of a spectroelectrochemistry device based on carbon nanotubes and bare optical fibers to perform UV–Vis absorption thin-layer spectroelectrochemistry measurements. The working and counter electrodes are made of carbon nanotubes filtered and press-transferred onto a flat support where a painted silver line acts as pseudo-reference electrode. To perform high sensitivity measurements, two bare optical fibers are fixed to the support in a parallel arrangement. In a novel development, a quartz plate is placed on top of the bare optical fibers in order to create a thin layer whose thickness is reproducibly controlled by the diameter of the optical fibers. This methodology is also successfully applied using commercial screen-printed electrodes. Three different electroactive compounds, ferrocenemethanol, o-tolidine and [Ru(bpy)3]2 +, are studied and good results are obtained. As demonstrated below, these long optical path UV–Vis absorption thin-layer spectroelectrochemistry cells considerably reduce the complexity associated with this type of devices, eliminating one of the major disadvantages of this technique and making it much more accessible to the scientific community.en
dc.description.sponsorshipMinisterio de Economía y Competitividad (CTQ2014-55583-R, CTQ2014-61914-EXP, CTQ2015-71955-REDT) and Junta de Castilla y León (BU033-U16)en
dc.description.sponsorshipMinisterio de Economía y Competitividad (CTQ2014-55583-R, CTQ2014-61914-EXP, CTQ2015-71955-REDT) and Junta de Castilla y León (BU033-U16)
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieren
dc.relation.ispartofElectrochemistry Communications. 2018, V. 86, p. 12-16
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectThin-layeren
dc.subjectSpectroelectrochemistryen
dc.subjectBare optical fibersen
dc.subjectCarbon nanotubesen
dc.subjectScreen-printed electrodesen
dc.subject.otherQuímica analíticaes
dc.subject.otherChemistry, Analyticen
dc.titleSimplifying the assessment of parameters of electron-transfer reactions by using easy-to-use thin-layer spectroelectrochemistry devicesen
dc.typeArtículoes
dc.typeinfo:eu-repo/semantics/article
dc.date.embargo2020-02
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.publisherversionhttps://doi.org/10.1016/j.elecom.2017.11.001
dc.identifier.doi10.1016/j.elecom.2017.11.001
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2014-61914-EXP
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2015-71955-REDT
dc.relation.projectIDinfo:eu-repo/grantAgreement/JCyL/BU033-U16
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersionen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record