Journal of the Chemical Society - Faraday Transactions p. 4131 - 4136 (1996)
Update date:2022-08-12
Topics:
Kenausis, Gregg
Taylor, Chris
Katakis, Ioanis
Heller, Adam
Glucose and lactate electrodes based on hydrogels made by crosslinking glucose oxidase and the redox polymer formed upon complexing poly(vinyl pyridine) (PVP) with [Os(dmo-bpy)2Cl]+/2+ (dmo-bpy = 4,4′-dimethoxy-2,2′-bipyridine) on vitreous carbon electrode surfaces have been investigated. The redox potential of the hydrogels was +35 mV vs. SCE and their glucose electrooxidation current reached a plateau at +150 mV vs. SCE. Urate and acetaminophen were not electrooxidized at this potential at rates that would interfere with the glucose and lactate assays. At a glucose concentration of 1 mM, the addition of 0.1 mM ascorbate increased the current by 17%. At 5 mM glucose, switching the atmosphere from argon to oxygen reduced the currents by 11%.
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