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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/116395
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dc.contributor.authorMedina-Plaza, C.-
dc.contributor.authorFurini, L. N.-
dc.contributor.authorConstantino, C. J. L.-
dc.contributor.authorSaja, J. A. de-
dc.contributor.authorRodriguez-Mendez, M. L.-
dc.date.accessioned2015-03-18T15:53:15Z-
dc.date.accessioned2016-10-25T20:24:41Z-
dc.date.available2015-03-18T15:53:15Z-
dc.date.available2016-10-25T20:24:41Z-
dc.date.issued2014-12-03-
dc.identifierhttp://dx.doi.org/10.1016/j.aca.2014.08.049-
dc.identifier.citationAnalytica Chimica Acta. Amsterdam: Elsevier Science Bv, v. 851, p. 95-102, 2014.-
dc.identifier.issn0003-2670-
dc.identifier.urihttp://hdl.handle.net/11449/116395-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/116395-
dc.description.abstractA synergistic electrocatalytic effect was observed in sensors where two electrocatalytic materials (functionalized gold nanoparticles and lutetium bisphthalocyanine) were co-deposited using the Langmuir-Blodgett technique. Films were prepared using a novel method where water soluble functionalised gold nanoparticles [(11-mercaptoundecyl)tetra(ethylene glycol)] (SAuNPs) were inserted in floating films of lutetium bisphthalocyanine (LuPc2) and dimethyldioctadecylammonium bromide (DODAB) as the amphiphilic matrix. The formation of stable and homogeneous mixed films was confirmed by pi-A isotherms, BAM, UV-vis and Raman spectroscopy, as well as by SEM and TEM microscopy. The synergistic effect towards hydroquinone of the electrodes modified with LuPc2:DODAB/SAuNP was characterised by an increase in the intensity of the redox peaks and a reduction of the overpotential. This synergistic electrocatalytic effect arose from the interaction between the SAuNPs and the phthalocyanines that occur in the Langmuir-Blodgett films and from the high surface area provided by the nanostructured films. The sensitivity increased with the amount of LuPc2 and SAuNPs inserted in the films and limits of detection in the range of 10(-7) mol L-1 were attained. (C) 2014 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipCICYT-
dc.description.sponsorshipMEC-
dc.description.sponsorshipJunta de Castilla y Leon-
dc.description.sponsorshipPIF-UVa-
dc.format.extent95-102-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectGold nanoparticleen
dc.subjectBisphthalocyanineen
dc.subjectLangmuir-Blodgetten
dc.subjectSensoren
dc.subjectHydroquinoneen
dc.titleSynergistic electrocatalytic effect of nanostructured mixed films formed by functionalised gold nanoparticles and bisphthalocyaninesen
dc.typeoutro-
dc.contributor.institutionUniv Valladolid-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Valladolid, Dept Inorgan Chem, Sch Engn, E-47002 Valladolid, Spain-
dc.description.affiliationUniv Estadual Paulista, UNESP, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil-
dc.description.affiliationUniv Valladolid, Dept Condensed Matter Phys, Fac Sci, E-47002 Valladolid, Spain-
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil-
dc.description.sponsorshipIdCICYTAGL2012-33535-
dc.description.sponsorshipIdMECPHB2011-0004PC-
dc.description.sponsorshipIdJunta de Castilla y LeonVA032U13-
dc.description.sponsorshipIdCAPES/DGU260/12-
dc.identifier.doi10.1016/j.aca.2014.08.049-
dc.identifier.wosWOS:000344235300013-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofAnalytica Chimica Acta-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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