ANALYTICAL APPLICATIONS OF ORGANIC CONDUCTING POLYMER ELECTRODES

Electrodes modified by he electrodeposition of conducting polymers wer e used for the detection and quantitative determination of some inorga nic, organic, and biological molecules. Monomers used were five member ed ring heterocycles or crown ethers and their derivatives. The polyme r films were deposited on glassy carbon or platinum substrates. The re sulting electrodes were used in the amperometric mode or in the potent iometric mode for flow injection and chromatographic analyses. The res ults showed that the proposed modified surface catalyzes the oxidation of organic and biological compounds. The detection of electroinactive inorganic anions, such as F-, Cl-, Br-, NO2- and NO3- was also possib le using a Cu(II)-containing poly(3-methylthiophene) working electrode for the single-column ion chromatography. The development of a novel type of poly(crown ether) electrode that is capable of selectively det ermining some 1,2-dihydroxybenzenes will also be discussed.