Amperometric glucose electrodes based electrochemical steps

Amperometric glucose electrodes based on glucose oxidase, chemical or electrochemical steps, 124-125 Amperometric glucose sensors glucose oxidase and nonphysiological redox mediators, electron-transfer mechanism, 169-170 poly(etheramine-quinone)s as electron transfer relay systems, 124-135 viologen derivative containing polysiloxane as electron-transfer mediator, 169-178... 

As was mentioned earlier, negatively charged CNTs can act as counterions in the electrochemical deposition of ECPs [19]. This straightforward method has been used for preparation of amperometric enz mie electrodes via entrapment of the enz3mie in the resulting ECP-CNT composite [63, 64]. Wang et al. developed amperometric glucose biosensors based on the PPy-MWCNT-GOD composite [63]. The composite was prepared by a simple one-step electrochemical method in which p3U role was electropolymerized at a constant potential of 0.7 V in the presence of c-MWCNTs and GOD. Results from the CV measurements showed that the incorporated c-MWCNTs act as counterions that maintain the electrical neutrality of the film. The influence of different parameters, such as the amount of the used MWCNTs, and the... 

Amperometric ucose electrodes based on glucose oxidase undergo several chemical or electrochemical steps which produce a measurable current is related to the ucose concentration. In the initial steps, ucose converts the oxidized flavin adenine dimicleotide (FAD) center of die enzyme into its reduced form (FADH2). Because these redox centers are essentially electrical insulated within the enzyme molecule, direct electron transfer to the surface of a conventional electrode does not occur to any measurable d ree. The most common methodi of indirect measuring die amount of ucose present relies on the natural enzymatic reaction ... 

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