Electropolymerized Architecture Entrapping a Trilacunary Keggin-Type Polyoxometalate for Assembling a Glucose Biosensor
摘要：
A new design to obtain an amperometric glucose biosensor based on glucose oxidase (GOx) immobilization on an electropolymerized matrix [poly (1,8DAN)] entrapping a trilacunary Keggin type polyoxometalate (Fe4POM) deposited on a graphite electrode was proposed. Some experimental evidences suggest that the modified conducting polymeric matrix consists in a multilayer architecture, formed from positively charged conductive poly (1,8DAN) alternating with the negatively charged (Fe4POM). At an applied potential of 0.04V (vs. Ag/AgCl, KClsat), the batch amperometric response to glucose of the G/Fe4POM-poly(1,8DAN)/GOx modified electrode is characterized by a sensitivity of 19.8±2.4μA M1 cm2, a linear range between 2.5 to 20mM glucose, a response time less than 40 s and a detection limit of 1.2mM glucose (for S/N=3).
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DOI：
10.1002/1521-4109(200211)14:223.0.CO;2-6
被引量：
年份：
2002
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