Abstract − Analytical Sciences, 18(12), 1339 (2002).
Electrochemical Properties of Nile Blue Covalently Immobilized on Self-assembled Thiol-monolayer Modified Gold Electrodes
Hui-Hong LIU,*,** Ji-Lin LU,*,*** Min ZHANG,* and Dai-Wen PANG*
*Department of Chemistry, Wuhan University, Wuhan 430072, China
**Department of Chemistry, Xiangfan University, Xiangfan 441053, China
***Department of Chemistry, Changde Normal University, Changde 415000, China
**Department of Chemistry, Xiangfan University, Xiangfan 441053, China
***Department of Chemistry, Changde Normal University, Changde 415000, China
A monolayer of Nile Blue (NB) has been covalently immobilized on the self-assembled thiol-monolayer modified gold electrode. Cyclic voltammograms indicated a stable and reverse redox process of NB bonded on the electrode surface. The mechanisms of redox process coupling with proton transfer were proposed. The NB-modified electrode showed excellent electrocatalytic activity toward Nicotinamide adenine dinucleotide (NADH) oxidation and horseradish peroxidase (HRP) reduction. A hydrogen peroxide biosensor based on NB as a mediator has been demonstrated.
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