LANGMUIR-BLODGETT-FILMS OF FERROCENECARBO XYLIC ACID AND GLUCOSE-OXIDASE BASED ON AMPHIPHILIC POLYELECTROLYTES

Monomolecular films of ferrocene derivatives and of glucose oxidase (G OD) have been formed on a graphite electrode by the Langmuir - Schaefe r method with the help of amphiphilic polyelectrolytes. The cyclic vol tammograms of these films and of their interaction with GOD are studie d. The ferrocenecarboxylic acid, incorporated into the polymeric matri ces by adsorption to a monomolecular polymer film or by direct mixing with a polymer solution before LB-film formation, retains its mediator properties in the reaction with GOD. The amperometric response of the graphite electrode with immobilized multilayer films containing polym er matrices, ferrocenecarboxylic acid and GOD were linear over the ran ge 1-20 mM of glucose.