RT info:eu-repo/semantics/article
T1 Multisensor system based on bisphthalocyanine nanowires for the detection of antioxidants
A1 Rodríguez Méndez, María Luz
A1 Gay Martín, Mónica
A1 Muñoz Martínez, Raquel
A1 Saja Sáez, José Antonio de
AB 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.
SN 0013-4686
YR 2012
FD 2012
LK http://uvadoc.uva.es/handle/10324/30704
UL http://uvadoc.uva.es/handle/10324/30704
LA eng
NO Electrochimica Acta  vol. 68 p. 88-94
NO Producción Científica
DS UVaDOC
RD 24-abr-2024