Journal
ANALYTICAL CHEMISTRY
Volume 82, Issue 12, Pages 5317-5322Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac100846v
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Funding
- U.S. Army Research Office
- U.S. Defense Threat Reduction Agency [W911NF-07-1-0330]
- Robert A. Welch Foundation [F-0032]
- Korean Government [KRF-2008-357-C00091]
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In this paper, we report a new electroanalytical technique we call snapshot voltammetry. This method combines the properties of bipolar electrodes with electrogenerated chemiluminescence (ECL) to provide a means for recording optical voltammograms in a single micrograph. In essence, the information in a snapshot voltammogram is contained in the spatial domain rather than in the time domain, which is the case for conventional voltammetry. The use of a triangle-shaped bipolar electrode stabilizes the interfacial potential difference along its length. Basic electrochemical parameters extracted from snapshot voltammograms are in good agreement with those obtained by conventional voltammetry. Although not explicitly demonstrated in this paper, this method offers the possibility of using arrays of bipolar electrodes to obtain numerous snapshot voltammograms simultaneously.
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