WIRING OF GLUCOSE OXIDASE WITHIN A HYDROGEL MADE WITH POLYVINYL IMIDAZOLE COMPLEXED WITH [(OS-4,4'-DIMETHOXY-2,2'-BIPYRIDINE)CL](+/2+)

摘要

Glucose electrodes based on hydrogels made by crosslinking glucose oxidase and the redox polymer formed upon complexing polyvinyl imidazole (PVI) with [os(dmo-bpy)(2)Cl](+/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 O-2 reduced the current only by 5%. [References: 15]