Electrochemical Glutathione Sensor Based on Electrochemically Deposited Poly‐m‐aminophenol |
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| Authors: | Yasemin Oztekin Almira Ramanaviciene Arunas Ramanavicius |
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| Institution: | 1. Selcuk University, Faculty of Science, Department of Chemistry, Konya, Turkey;2. Vilnius University, Faculty of Chemistry, NanoTechnas – Center of Nanotechnology and Materials Science, Vilnius, Lithuania tel.: +370?60032332;3. fax: +370?52469210 |
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| Abstract: | Preparation and characterization of electrodes suitable for determination of glutathione is reported in this study. For this poly‐m‐aminophenol (PmAP), poly‐o‐aminophenol, and poly‐p‐aminophenol were electrochemically deposited from aqueous solution on the surface of glassy carbon (GC) electrode by potential cycling in the range of +0.2–+1.0 V. The modified GC electrodes were characterized by cyclic voltammetry, electrochemical impedance spectroscopy, contact angle measurement and ellipsometry. It was found that poly‐m‐aminophenol modified GC electrode (PmAP/GC‐electrode) is most suitable for electroanalytical determination of glutathione. An electroanalytical system for the determination of glutathione based on the PmAP/GC‐electrode was developed. The analytical system was characterized by low limit of detection, good stability, high sensitivity and wide linear detection range. |
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| Keywords: | Electrochemical polymerization Aminophenol Glassy carbon Glutathione Electrochemical sensors Polyaniline Conducting polymers |
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