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    • DEP63 - Artículos de revista
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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/30601

    Título
    Synergistic electrocatalytic effect of nanostructured mixed films formed by functionalised gold nanoparticles and bisphthalocyanines.
    Autor
    Medina Plaza, Cristina
    Furini, Leonardo Negri
    Constantino, Carlos José Leopoldo
    Saja Sáez, José Antonio de
    Rodríguez Méndez, María Luzuntranslated ORCID
    Año del Documento
    2014
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Analytica Chimica Acta Volume 851, 3 December 2014, Pages 95–102
    Abstract
    A 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.
    Materias (normalizadas)
    A
    ISSN
    0003-2670
    Revisión por pares
    SI
    DOI
    10.1016/j.aca.2014.08.049
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/30601
    Derechos
    embargoedAccess
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    • DEP63 - Artículos de revista [188]
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