Introducing CEC′ mechanism: Electrochemical oxidation of 4-methylesculetin–boric acid complex in the presence of glutathione

• Published in: Electrochimica acta Vol. 111; pp. 909 - 915
• Main Authors: Salehzadeh, Hamid, Nematollahi, Davood
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 30.11.2013
• Subjects: 4-Methylesculetin; Aqueous solutions; Boric acid; Catalysis; CEC′ mechanism; Diagnostic systems; EC′ mechanism; Electrochemical oxidation; Electrodes; Glassy carbon; Glutathione; Voltammetry; EC′ mechanism; Boric acid; 4-Methylesculetin; CEC′ mechanism; Glutathione
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/j.electacta.2013.08.093

We report the first successful CEC′ mechanism via electrochemical oxidation of 4-methylesculetin–boric acid complex (4MS–B) in the presence of glutathione (GSH). •Introducing CEC′ mechanism.•Electrochemical oxidation of 4-methylesculetin–boric acid complex.•Electrochemical oxidation of 4-methylesculetin in the presence of glutathione.•Electrochemical oxidation of 4-methylesculetin–boric acid complex in the presence of glutathione. The electrochemical behavior of 4-methylesculetin–boric acid complex (4MS–B) in aqueous solution has been studied at a glassy carbon electrode using cyclic voltammetry. The results indicate that 4MS–B is involved in the CE mechanism. In the next step the electrochemical oxidation of 4-methylesculetin (4MS) was studied in the presence of glutathione using cyclic voltammetry. The results indicate a complicated catalytic system. Finally the electrochemical behavior of 4MS–B in the presence of glutathione has been studied using cyclic voltammetry as a diagnostic technique. The results indicate that this system is involved in the CEC′ process as a new electrochemical mechanism. In this work, the impact of empirical parameters on the shape of the voltammograms is examined based on a CEC′ mechanism.