University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Electrode

Classification: Electrode -> membrane -> phenylenevinylene

Citations 1

"Conducting Phenylenevinylene Blends As Electrode Materials In LC Amperometric Detection"
Electroanalysis 1997 Volume 9, Issue 15 Pages 1197-1200

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E. Staes*, L. J. Nagels, G. Verreyt, S. Jacobs, Y. Bao, H. J. Geise

Abstract: A novel amperometric electrode based on a conducting polymer is presented and its properties are compared with those of a glassy carbon electrode. The electrode material was made by mixing 2,5-dimethoxy-1,4-bis(2-(3,4,5-trimethoxy-phenyl)ethenyl)benzene with iodine and polycarbonate. The blend was coated on a glassy carbon electrode by evaporation from a chloroform solution. Catecholamines were used as test substances in LC and FIA measurements. They were oxidized at a potential of +0.7 V (vs. SCE). The electrode exhibited a linear response for injected concentrations from 2.5 X 10^-6 M to 2.5 X 10^-3 M. It had a response time of 1.2 s and a coulometric efficiency of 0.74% at a linear flow rate of 1 mL/min. The electrode material is stable for several months under normal operating conditions. Hydrodynamic voltammograms showed E1/2 values shifted by approximately 100 mV as compared to glassy carbon. The novel redox-conducting coating is proposed as an alternative material for the development of enzyme electrodes and chemically modified electrodes.
Catecholamines