DIRECT ELECTRICAL RESPONSE BETWEEN GLUCOSE-OXIDASE AND POLY(MERCAPTO-P-BENZOQUINONE) FILMS

Glucose oxidase was immobilized in a conductive redox polymer, poly(mercapto-p-benzoquinone), by means of an electropolymerization of mercaptohydroquinone in the presence of the enzyme. A glassy carbon electrode coated with the resulting polymer film functioned well as a direct response type of glucose sensor, where the polymer chain served as a conductive molecular chain between the active center (FAD) in the enzyme and the substrate electrode. The sensor showed excellent selectivity and possessed good durability.