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A Simple Method for Examining the Electrochemistry of Metalloporphyrins and Other Hydrophobic Reactants in Thin Layers of Organic Solvents Interposed between Graphite Electrodes and Aqueous Solutions

Shi, Chunnian and Anson, Fred C. (1998) A Simple Method for Examining the Electrochemistry of Metalloporphyrins and Other Hydrophobic Reactants in Thin Layers of Organic Solvents Interposed between Graphite Electrodes and Aqueous Solutions. Analytical Chemistry, 70 (15). pp. 3114-3118. ISSN 0003-2700. http://resolver.caltech.edu/CaltechAUTHORS:20170915-082322991

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Abstract

A method is described for the preparation of stable, adherent, thin layers of organic solvents interposed between the surfaces of graphite electrodes and aqueous supporting electrolytes in which they are immersed. The electrochemistry of reactants dissolved in the thin layers is examined and utilized to evaluate surface coverages and formal potentials for molecules, such as cobalt tetraphenylporphyrins, that do not exhibit useful electrochemical responses when adsorbed on graphite. The thin layers of organic solvent can be used to concentrate analytes by extracting them from dilute aqueous solutions to produce enhanced sensitivity in electroanalytical applications. Electron transfer across the liquid/liquid interface created by the presence of the thin layer of immiscible organic solvent is also demonstrated.


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https://doi.org/10.1021/ac980426kDOIArticle
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Additional Information:© 1998 American Chemical Society. Received for review April 22, 1998. Accepted June 10, 1998. Publication Date (Web): July 3, 1998. This work was supported by the U.S. National Science Foundation.
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Record Number:CaltechAUTHORS:20170915-082322991
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170915-082322991
Official Citation:A Simple Method for Examining the Electrochemistry of Metalloporphyrins and Other Hydrophobic Reactants in Thin Layers of Organic Solvents Interposed between Graphite Electrodes and Aqueous Solutions. Chunnian Shi and Fred C. Anson. Analytical Chemistry 1998 70 (15), 3114-3118 DOI: 10.1021/ac980426k
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:81480
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Sep 2017 16:32
Last Modified:15 Sep 2017 16:32

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