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    • WISSENSCHAFTLICHE ARBEITEN
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    • Dpto. Química Física y Química Inorgánica
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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/30704

    Título
    Multisensor system based on bisphthalocyanine nanowires for the detection of antioxidants
    Autor
    Rodríguez Méndez, María LuzAutoridad UVA Orcid
    Gay Martín, Mónica
    Muñoz Martínez, RaquelAutoridad UVA Orcid
    Saja Saez, José Antonio DeAutoridad UVA Orcid
    Año del Documento
    2012
    Descripción
    Producción Científica
    Documento Fuente
    Electrochimica Acta vol. 68 p. 88-94
    Zusammenfassung
    Electrophoretic deposition has been used to prepare thin films based on nanowires of three lanthanoid bisphthalocyaninates (including dysprosium, gadolinium and lutetium). Nanowires of similar structural characteristics have been obtained for the three compounds by tuning the electrophoretic conditions according to the redox properties of each phthalocyanine. The three electrodes have been used to form an array of sensors that has been employed to discriminate phenolic antioxidants of interest in the food industry including caffeic, gallic, vanillic and ferulic acids. The Principal Component Analysis (PCA) and the Partial Least Squares Discriminant Analysis (PLS-DA) of the electrochemical signals has allowed a clear discrimination of the four phenols analyzed according to the number of phenolic groups attached to the structure (monophenol, diphenol or triphenol). The PCA loading plots indicate that the three electrodes bring complementary information facilitating the discrimination of the studied solutions. In addition, good correlations between the intensity of the redox processes observed in the electrodes and the concentration of phenolic compounds have been found with detection limits in the range of 10−5–10−6 mol L−1 and good reproducibility. The fast preparation of these nanowires based films and their excellent performance offer a new sensing platform for the detection of antioxidants in a fast, reliable way.
    ISSN
    0013-4686
    Revisión por pares
    SI
    DOI
    10.1016/j.electacta.2012.02.042
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/30704
    Derechos
    openAccess
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    • DEP63 - Artículos de revista [324]
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    Universidad de Valladolid

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