Electron transfer mediated by glucose oxidase at the liquid/liquid interface

被引:23
作者
Georganopoulou, DG [1 ]
Caruana, DJ [1 ]
Strutwolf, J [1 ]
Williams, DE [1 ]
机构
[1] UCL, Dept Chem, London WC1H 0AJ, England
关键词
D O I
10.1039/b004449k
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In order to establish an experimental basis for exploring the reactivity of membrane-bound redox enzymes using electrochemistry at an organic/aqueous interface, the reactivity of glucose oxidase adsorbed at the dichloroethane/water interface has been studied. Turnover of glucose in the aqueous phase mediated by dimethyl ferricenium electrogenerated in the organic phase was measured by measuring the feedback current caused by recycling the mediator as the generator electrode approached close to the interface from the organic side. An unexpected self-exchange reaction of the ferrocene at the interface was suppressed by adsorption of a surfactant. The interfacial enzyme reaction could be distinguished from reaction within the bulk of the aqueous phase. Reaction within a protein-surfactant film formed at the interface is conjectured.
引用
收藏
页码:109 / 118
页数:10
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