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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/4943

    Título
    Simplifying the assessment of parameters of electron-transfer reactions by using easy-to-use thin-layer spectroelectrochemistry devices
    Autor
    Garoz Ruiz, JesúsAutoridad UBU Orcid
    Guillen Posteguillo, CarlosAutoridad UBU
    Heras Vidaurre, AránzazuAutoridad UBU Orcid
    Colina Santamaría, ÁlvaroAutoridad UBU Orcid
    Publicado en
    Electrochemistry Communications. 2018, V. 86, p. 12-16
    Editorial
    Elsevier
    Fecha de publicación
    2018-01
    ISSN
    1388-2481
    DOI
    10.1016/j.elecom.2017.11.001
    Resumen
    UV–Vis absorption thin-layer spectroelectrochemistry greatly contributes to the assessment of parameters of electron-transfer reactions by providing electrochemical and spectroscopic information obtained simultaneously in a confined space around the working electrode. In this work we present an ingenious modification of a spectroelectrochemistry device based on carbon nanotubes and bare optical fibers to perform UV–Vis absorption thin-layer spectroelectrochemistry measurements. The working and counter electrodes are made of carbon nanotubes filtered and press-transferred onto a flat support where a painted silver line acts as pseudo-reference electrode. To perform high sensitivity measurements, two bare optical fibers are fixed to the support in a parallel arrangement. In a novel development, a quartz plate is placed on top of the bare optical fibers in order to create a thin layer whose thickness is reproducibly controlled by the diameter of the optical fibers. This methodology is also successfully applied using commercial screen-printed electrodes. Three different electroactive compounds, ferrocenemethanol, o-tolidine and [Ru(bpy)3]2 +, are studied and good results are obtained. As demonstrated below, these long optical path UV–Vis absorption thin-layer spectroelectrochemistry cells considerably reduce the complexity associated with this type of devices, eliminating one of the major disadvantages of this technique and making it much more accessible to the scientific community.
    Palabras clave
    Thin-layer
    Spectroelectrochemistry
    Bare optical fibers
    Carbon nanotubes
    Screen-printed electrodes
    Materia
    Química analítica
    Chemistry, Analytic
    URI
    http://hdl.handle.net/10259/4943
    Versión del editor
    https://doi.org/10.1016/j.elecom.2017.11.001
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    • Artículos GAIN
    Attribution-NonCommercial-NoDerivatives 4.0 International
    Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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    Nombre:
    Garoz-ec_2018.pdf
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