Add time:08/20/2019         Source:sciencedirect.com

Glucose electrodes based on hydrogels made by crosslinking glucose oxidase and the redox polymer formed upon complexing polyvinyl imidazole (PVI) with [Os(dmo-bpy)2Cl]+/2+ (dmo-bpy= 4,4′-dimethoxy-2,2′-bipyridine) on vitreous carbon electrode surfaces were investigated. The redox potential of the hydrogels was −69 mV (SCE) and their glucose electrooxidation current reached a plateau at +50 mV (SCE). Urate and acetaminophen were not electrooxidized at this potential at rates that would interfere with the glucose assays. At 32 mM glucose concentration switching of the atmosphere from argon to O2 reduced the current only by 5%.

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