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    Water uptake in the hydrophilic poly(3,4-ethylenedioxythiophene):poly-(styrene sulfonate) solid-contact of all-solid-state polymeric ion-selective electrodes

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    Fulltext not available
    Authors
    Veder, Jean-pierre
    De Marco, Roland
    Clarke, Graeme
    Jiang, San Ping
    Prince, K.
    Pretsch, E.
    Bakker, Eric
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Veder, J. and De Marco, R. and Clarke, G. and Jiang, S.P. and Prince, K. and Pretsch, E. and Bakker, E. 2011. Water uptake in the hydrophilic poly(3,4-ethylenedioxythiophene):poly-(styrene sulfonate) solid-contact of all-solid-state polymeric ion-selective electrodes. Analyst. 136: pp. 3252-3258.
    Source Title
    Analyst
    DOI
    10.1039/c1an15267j
    ISSN
    0003-2654
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/25590
    Collection
    • Curtin Research Publications
    Abstract

    Solid-contact (SC) ion-selective electrodes (ISEs) utilizing thin films of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and plasticized poly(vinylchloride) (PVC) have been produced using a spin casting procedure. This study was carried out with a view of characterizing this popular and well known SC ISE using a series of complementary surface analysis techniques. This work revealed that PEDOT:PSS prevents the separation of an undesirable water layer at the buried interface of this SC ISE due to the high miscibility of water in the hydrophilic PEDOT:PSS layer. The lack of a clearly defined and molecularly sharp buried interface prohibits the formation of a distinct water layer presumably by eliminating sites that promote the accumulation of water. This outcome is important to the chemical sensor community since it provides further insights into the compatibility of sensor components in SC ISEs.

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