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    Synchrotron Radiation/Fourier Transform-Infrared Microspectroscopy Study of Undesirable Water Inclusions in Solid-Contact Polymeric Ion-Selective Electrodes

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    Authors
    Veder, Jean-Pierre
    Patel, Kunal
    Clarke, Graeme
    Grygolowicz-Pawlak, Ewa
    Silvester, Debbie
    De Marco, Roland
    Pretsch, E.
    Bakker, Eric
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Veder, Jean-Pierre and Patel, Kunal and Clarke, Graeme and Grygolowicz-Pawlak, Ewa and Silvester, Debbie S. and De Marco, Roland and Pretsch, Erno and Bakker, Eric. 2010. Synchrotron Radiation/Fourier Transform-Infrared Microspectroscopy Study of Undesirable Water Inclusions in Solid-Contact Polymeric Ion-Selective Electrodes. Analytical Chemistry. 82 (14): pp. 6203-6207.
    Source Title
    Analytical Chemistry
    DOI
    10.1021/ac101009n
    ISSN
    00032700
    Faculty
    Nanochemistry Research Institute (NRI)
    Faculty of Science and Engineering
    School
    Nanochemistry Research Institute (Research Institute)
    URI
    http://hdl.handle.net/20.500.11937/13204
    Collection
    • Curtin Research Publications
    Abstract

    This paper reports on three-dimensional synchrotron radiation/Fourier transform-infrared microspectroscopy (SR/FT-IRM) imaging studies of water inclusions at the buried interface of solid-contact-ion-selective electrodes (SC-ISEs). It is our intention to describe a nondestructive method that may be used in surface studies of the buried interfaces of materials, especially multilayers of polymers. Herein, we demonstrate the power of SR/FT-IRM for studying water inclusions at the buried interfaces of SCISEs. A poly(methyl methacrylate)-poly(decyl methacyrlate)[PMMA-PDMA] copolymer revealed the presence of micrometer sized inclusions of water at the gold/membrane interface, while a coupling of a hydrophobic solid contact of poly(3-octylthiophene 2,5-diyl) (POT) prevented the accumulation of water at the buried interface. A similar study with a poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) [PEDOT/PSS] solid contact also revealed an absence of distinct micrometer-sized pools of water; however, there were signs of absorption of water accompanied by swelling of the PEDOT/PSS underlayer, and these membrane zones are enriched with respect to water.

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