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Electrochemistry and Characterization of Some Organic Molecules at “Microsize” Conducting Polymer Electrodes
Author(s) -
Galal Ahmed
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199802)10:2<121::aid-elan121>3.0.co;2-r
Subject(s) - electrode , polymer , materials science , electrochemistry , conductive polymer , platinum , scanning electron microscope , substrate (aquarium) , characterization (materials science) , analytical chemistry (journal) , chemical engineering , nanotechnology , chemistry , composite material , organic chemistry , geology , catalysis , oceanography , engineering
Poly(3‐methylthiophene) is electrochemically deposited on platinum microsize substrate. Two methods are used for the electropolymerization including applying constant potential of 1.65 V to 1.75 V, or cycling the working electrode between two potential limits from −0.2 V to 1.65–1.80 V (vs. Ag/AgCl). The resulting conducting polymer electrode is used for the determination of some organic molecules of biological interest. The resolution of the voltammetric peaks obtained for the determination of a mixture of three components analyte is a function of the method used for electrodeposition of the polymer film. The electrochemical data obtained at the microsize conducting polymer electrode are compared to those obtained at “conventional”‐size polymer electrodes. The morphology of the microsize polymer electrode is examined using scanning electron microscopy. The data suggest great promise for using microsize polymer electrodes as electrochemical sensor for biomedical applications.