The Electrochemistry of Nicotinamide-adenine Dinucleotide at a β-Naphthochinonsulfonicum Modified Gold Band Electrode

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (11): 1680.

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The Electrochemistry of Nicotinamide-adenine Dinucleotide at a β-Naphthochinonsulfonicum Modified Gold Band Electrode

JU Huang-Xian, MA Wei, CAI Chen-Xin, CHEN Hong-Yuan

Department of Chemistry, Nanjing University, Nanjing, 210093

Received:1994-12-31 Revised:1995-04-19 Online:1995-11-24 Published:1995-11-24

Abstract

Abstract: The preparation of β-naphthochinonsulfon-icum(NQS) modified gold band electrode was studied.The electropolymerization process of NQS/PPy and the effects of experimental conditions on the behaviour of polymer membrane were discussed. The effect of anionic NOS on chronoamperometric curves in electropolymerization process was explained with the nucleation and growth theory. The modified electrode can catalyze the electrochemical reduction of NAD⁺at a gold electrode. At pH 7.0,the catalytic peak current is proportional to the concentration of NAD⁺in the range of 4.0× 10^-3to 1. 5×10^-3mol/L. The electrocatalvtical mechanism was also discussed.

Key words: Modified electrode, Polypyrrole, Gold band electrode, β-naphthochinonsulfonicum, Nicotinamide-adenine dinueleotide

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JU Huang-Xian, MA Wei, CAI Chen-Xin, CHEN Hong-Yuan. The Electrochemistry of Nicotinamide-adenine Dinucleotide at a β-Naphthochinonsulfonicum Modified Gold Band Electrode[J]. Chem. J. Chinese Universities, 1995, 16(11): 1680.

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The Electrochemistry of Nicotinamide-adenine Dinucleotide at a β-Naphthochinonsulfonicum Modified Gold Band Electrode

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