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Poly(2,5-dimethoxyaniline) (PDMA) films were electrochemically synthesized on mild steel from an aqueous oxalic acid solution using galvanostatic mode. These films were characterized by potential-time curve, UVvisible absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The enzyme glucose oxidase (GOx) was entrapped into the PDMA film by a physical adsorption method. The resulting PDMA-GOx films were characterized by UV-visible absorption spectroscopy, FTIR, and SEM. The amperometric response of the PDMA-GOx films was measured as a function of glucose concentration in phosphate buffer solution (pH 7.3). The PDMA-GOx films exhibit a fast and linear amperometric response in the range of 2-20 mM glucose. The maximum current density and Michaelis-Menten constant of PDMA/GOx films are found to be $483 lA/cm 2 and 1.12 mM, respectively. The shelf stability and thermal stability of these films were also investigated.

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