Direct Electrical Communication between Graphite Electrodes and Surface Adsorbed Glucose Oxidase/Redox Polymer Complexes

The electrodes mentioned in the title can respond to temporal changes in glucose concentration in less than a second. They consist of the redox terpolymer 1, which is tightly adsorbed on graphite and which, in turn, adsorbs glucose-oxidase. The redox centers of the polymer can thereby reach into the neighborhood of the redox center of the enzyme. If the electrodes are kept at the redox potential of the polymer (ca. 0.25 V vs. SCE) or above, a current flows from the enzyme-bound glucose via enzyme and polymer to the electrodes.