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Electrocatalysis of oxidation of 2-mercaptoethanol, l-cysteine and reduced glutathione by adsorbed and electrodeposited cobalt tetra phenoxypyrrole and tetra ethoxythiophene substituted phthalocyanines |
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| Authors: | Nthapo Sehlotho Tebello Nyokong Fethi Bedioui |
| Affiliation: | a Unité de Pharmacologie Chimique et Génétique, UMR CNRS no. 8151/U INSERM no. 640, Ecole Nationale Supérieure de Chimie de Paris, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France b Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa c Facultad de Quimica y Biologia, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile |
| Abstract: | Catalytic activity of cobalt tetra ethoxythiophene and cobalt tetra phenoxypyrrole phthalocyanine complexes towards oxidation of 2-mercaptoethanol, l-cysteine and reduced glutathione is reported. It was found that the activity of the complexes depends on the substitution of the phthalocyanine ring, pH, film thickness and method of electrode modification. The high electrocatalytic activity obtained with adsorbed complexes in alkaline medium clearly demonstrates the necessity of modifying bare carbon electrodes to endow them with the desired behaviour. |
| Keywords: | Metallophthalocyanine Electrocatalysis 2-Mercaptoethanol smallcaps" >l-Cysteine Reduced glutathione Bare carbon electrode Modified electrode |
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