Ion exchanged polypyrrole-based glucose biosensor: Enhanced loading and response
1995; Wiley; Volume: 7; Issue: 6 Linguagem: Inglês
10.1002/elan.1140070614
ISSN1521-4109
AutoresKumaran Ramanathan, N. S. Sundaresan, Bansi D. Malhotra,
Tópico(s)Analytical Chemistry and Sensors
ResumoAbstract Enhanced loading of glucose oxidase in polypyrrole films via manipulation of the polymer morphology is reported. The exchange of bulky anions such as p ‐toluene sulfonate and ferricyanide present as dopant ions in polypyrrole, with chloride ion in solution leads to greater porosity and resultant maximization of glucose oxidase (GOx) immobilization in polypyrrole. The polypyrrole–Gox electrode thus prepared exhibits improved performance as an amperometric glucose sensor. The fractal dimension estimated from chronoamperometric data demonstrate the increased dimensionality of the polypyrrole network after ion exchange.
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