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dc.contributor.authorMedina Plaza, Cristina
dc.contributor.authorFurini, Leonardo Negri
dc.contributor.authorConstantino, Carlos José Leopoldo
dc.contributor.authorSaja Sáez, José Antonio de
dc.contributor.authorRodríguez Méndez, María Luz 
dc.date.accessioned2018-07-11T10:10:42Z
dc.date.issued2014
dc.identifier.citationAnalytica Chimica Acta Volume 851, 3 December 2014, Pages 95–102es
dc.identifier.issn0003-2670es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/30601
dc.descriptionProducción Científicaes
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 π-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.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleSynergistic electrocatalytic effect of nanostructured mixed films formed by functionalised gold nanoparticles and bisphthalocyanines.es
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1016/j.aca.2014.08.049es
dc.identifier.publicationfirstpage95es
dc.identifier.publicationlastpage102es
dc.identifier.publicationvolume851es
dc.peerreviewedSIes
dc.description.embargo2022-07-10es
dc.description.lift2022-07-10
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International


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