Poly(Xylylviologen) Electron Transfer Mediators in Amperometric Glucose Sensors

Autor: P.D. Hale, H.L. Lan, Yoshi Okamoto, L. I. Boguslavsky, T. A. Skotheim, H. I. Karan
Rok vydání: 1990
Předmět:
Zdroj: Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics. 190:259-264
ISSN: 1044-1859
DOI: 10.1080/00268949008047849
Popis: Water-soluble poly(o-xylylviologen dibromide) and poly(p-xylylviologen dibromide) are shown to efficiently mediate electron transfer from reduced glucose oxidase to a conventional carbon paste electrode. Because of their low oxidation potentials, glucose sensors based on glucose oxidase and these mediators can be operated in a potential range where oxidation of interfering species such as ascorbic acid and uric acid does not occur. The corresponding monomeric materials, benzylviologen bromide and dibenzylviologen dibromide cannot serve as electron transfer mediators as their formal potentials are more negative than that of the flavin redox centers in glucose oxidase.
Databáze: OpenAIRE