Davis, James and Cooper, Jonathan (2002) Electrochemical manipulation of localised pH: application to electroanalysis. Journal of Electroanalytical Chemistry, 520 . pp. 13-17. [Journal article]
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The electrochemical manipulation of the local pH at a polymer functionalised electrode has been achieved in order to enhance the electrochemical response to cationic analytes. The changes in pH have been shown to provide a method for significantly enhancing the analytical signal towards the model compounds, dopamine and p-aminophenol. The procedure was found to operate irrespective of the electrical properties of the film. The main requirement for this electroanalytical system is that the film contains acidic groups within the polymer backbone. In the carboxylic acid functionalised polypyrrole film studied here, the performance was found to be greatest when the bulk solution pH was less than the pKa of the acid groups. The mechanism attributed to the enhanced response is elucidated and the limitations of the technique are assessed.
|Item Type:||Journal article|
|Faculties and Schools:||Faculty of Computing & Engineering|
Faculty of Computing & Engineering > School of Engineering
|Research Institutes and Groups:||Engineering Research Institute|
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
|Deposited By:||Professor James Davis|
|Deposited On:||08 Jun 2012 08:15|
|Last Modified:||08 Jun 2012 08:15|
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