ELECTROCHEMICAL AND SENSING PROPERTIES OF ENZYME-POLYPYRROLE MULTICOMPONENT ELECTRODES

A structurally well-defined multilayer enzyme electrode comprised of a lipid-modified glucose oxidase and an electrically conductive poly(py rrole) LB film for detecting glucose was fabricated by using the Langm uir-Blodgett technique. The voltammetric measurements of these electro des revealed that the electrically conductive poly(pyrrole) layers cou ld quantitatively detect the hydrogen peroxide produced by the modifie d enzyme layers. The amperometric anodic current (at 0.6 V vs. Ag/AgCl ) of the electrode increased with increasing the glucose concentration . A linear response to glucose concentration was observed in the range of 15 - 100 mM with a detection limit of 5 mM.