Capacitance Spectroscopy: A Versatile Approach To Resolving the Redox Density of States and Kinetics in Redox-Active Self-Assembled Monolayers

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dc.contributor.authorBueno, Paulo Roberto [UNESP]
dc.contributor.authorMizzon, Giulia
dc.contributor.authorDavis, Jason J.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Oxford
dc.date.accessioned2014-05-20T15:32:16Z
dc.date.available2014-05-20T15:32:16Z
dc.date.issued2012-08-02
dc.description.abstractRedox active self-assembled monolayers inherently possess both electrochemically addressable and polarizable components. The latter will contribute, with additional parasitic terms, to the iR drop effects within any form of electronic analysis, potentially distorting results. A capacitive analysis of such interfaces (Electroactive Mono layer Capacitance Spectroscopy), presented here, enables a clean mapping of both the thermodynamic and kinetic faradaic characteristics in a single experimental run, with parasitic nonfaradaic contributions (polarization and resistance terms) both spectrally resolved and cleanly removed. The methodology enables a rapid and undistorted quantification of accessible redox site density of states (reported directly by redox capacitance), molecular surface coverage, electron transfer kinetics, and reorganization energies with comparatively little experimental effort. Exemplified here with electroactive copper protein and ferrocene films the approach is equally applicable to any redox active interface.en
dc.description.affiliationUniv Estadual Paulista, Inst Quim, BR-14800900 São Paulo, Brazil
dc.description.affiliationUniv Oxford, Dept Chem, Oxford OX1 3QZ, England
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, BR-14800900 São Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipSão Paulo State University (UNESP)
dc.format.extent8822-8829
dc.identifierhttp://dx.doi.org/10.1021/jp303700f
dc.identifier.citationJournal of Physical Chemistry B. Washington: Amer Chemical Soc, v. 116, n. 30, p. 8822-8829, 2012.
dc.identifier.doi10.1021/jp303700f
dc.identifier.issn1520-6106
dc.identifier.lattes0477045906733254
dc.identifier.orcid0000-0003-2827-0208
dc.identifier.urihttp://hdl.handle.net/11449/41212
dc.identifier.wosWOS:000306989800010
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofJournal of Physical Chemistry B
dc.relation.ispartofjcr3.146
dc.relation.ispartofsjr1,331
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleCapacitance Spectroscopy: A Versatile Approach To Resolving the Redox Density of States and Kinetics in Redox-Active Self-Assembled Monolayersen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/copyright/journals/faqs.html
dcterms.rightsHolderAmer Chemical Soc
unesp.author.lattes0477045906733254[1]
unesp.author.orcid0000-0003-2827-0208[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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