Glucose Sensitivity of Thiol-modified Gold Electrodes Having Immobilized Glucose Oxidase and 2-Aminoethylferrocene

Abstract

Abstract A novel amperometric glucose sensor was fabricated in which glucose oxidase and 2-aminoethylferrocene as an electron mediator were chemically bound to self-assembled 4-aminothiophenol monolayer on gold electrode with use of glutaraldehyde as a cross linking agent. The glucose sensor prepared under optimal conditions showed sensitivities more than 30 μA cm−2 for 20 mM of glucose.