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    Investigation of the Antifouling Properties of Phenyl Phosphorylcholine-Based Modified Gold Surfaces

    Access Status
    Fulltext not available
    Authors
    Parviz, M.
    Darwish, Nadim
    Alam, M.
    Parker, S.
    Ciampi, S.
    Gooding, J.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Parviz, M. and Darwish, N. and Alam, M. and Parker, S. and Ciampi, S. and Gooding, J. 2014. Investigation of the Antifouling Properties of Phenyl Phosphorylcholine-Based Modified Gold Surfaces. Electroanalysis. 26 (7): pp. 1471-1480.
    Source Title
    Electroanalysis
    DOI
    10.1002/elan.201400102
    ISSN
    1040-0397
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/39646
    Collection
    • Curtin Research Publications
    Abstract

    Low impedance, antifouling coatings on gold electrodes based on three new zwitterionic phenyl phosphorylcholine (PPC)-based layers namely 1) reductively adsorbed PPC diazonium salt, 2) dithiocarbamate PPC SAM and 3) lipoamide PPC SAM (PPC coupled to a-lipoic acid) were evaluated. The layers were assessed for their ability to limit nonspecific adsorption of proteins to electrode surface with some significant differences observed compared with previously studied PPC diazonium salts reductively adsorbed on glassy carbon. Fluorescence microscopy and electrochemical impedance spectroscopy results suggest that protein adsorption is sensitive to the difference in the structure of the PPC molecules and the charge neutrality of the layers. The lipoamide PPC SAM was shown to be the most effective at resisting nonspecific protein adsorption and this layer was as effective as the 'gold standard' of oligo(ethylene oxide) SAMs on gold and PPC diazonium salts reductively adsorbed on glassy carbon.

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