Abstract
Two kinds of water-soluble polymers having ferrocenyl groups were prepared by the reactions of ferrocenoyl chloride with a homopolymer and a copolymer of l-lysine. The polymers acted as electron mediators between electrodes and the reduced form of glucose oxidase. Amperometric glucose-sensing electrodes were constructed by the simultaneous immobilization of each polymeric mediator and glucose oxidase near the surface of a glassy carbon electrode with a semipermeable membrane. The sensing-electrode using the ferrocene-attached l-lysine homopolymer was usable for the determination of glucose concentrations up to 6 mM.
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