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

Autor:	Chunnian Shi, Fred C. Anson
Rok vydání:	1998
Předmět:	Electron transfer Thin layers Adsorption Aqueous solution Chemistry Inorganic chemistry Electrolyte Graphite Cyclic voltammetry Electrochemistry Analytical Chemistry
Zdroj:	Analytical Chemistry. 70:3114-3118
ISSN:	1520-6882 0003-2700
DOI:	10.1021/ac980426k
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02e6acfa2e95ec36d89042578c17cca6 https://doi.org/10.1021/ac980426k Zobrazit plný text záznamu