A Microelectrochemical Enzyme Transistor Responsive to Glucose

Microelectrochemical enzyme transistors, or enzyme switches, were prepared by connecting two carbon band electrodes (∼10 μm wide, 4.5 mm long separated by a 20-μm gap) with an anodically grown film of poly(aniline). Glucose oxidase (GOx, EC 1.1.3.4) was immobilized onto the poly(aniline) film in an insulating poly(1,2-diaminobenzene) polymer grown electro-chemically on top of the poly(aniline) film to complete the device

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