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- Title
Composite Material Based on Macroporous Polyaniline and Osmium Redox Complex for Biosensor Development.
- Authors
Antiochia, Riccarda; Mazzei, Franco; Gorton, Lo; Leech, Dónal; Favero, Gabriele
- Abstract
Here the feasibility of layers based on the conducting polymer polyaniline (PANI) as component of glucose biosensors using glucose oxidase (GOx) as enzyme and [Os(bpy)2(4-aminomethylpyridine)Cl]PF6 (OsCmplx) as electrochemical mediator, is evaluated. Particularly, PANI was employed to obtain a nanostructured macroporous material (m-PANI) around polystyrene nanoparticles taken as template and the mediator was co-immobilized during the polymerizing procedure. The GOx biosensor based on OsCmplx modified m-PANI provides a linear response to glucose concentration in the range 5 up to 65 mM with a sensitivity of 3.54 µA/mM/cm2 (on a projected geometric area=0.07 cm2), an LOD of 0.8 mM and a good precision (% RSD≤7, n=5); the biosensor is stable showing a decrease of 10% to the value of the sensitivity after 15 days of use and of about 50% after 40 days.
- Subjects
POLYANILINES; OSMIUM; GLUCOSE oxidase; COMPOSITE materials; NANOSTRUCTURED materials
- Publication
Electroanalysis, 2014, Vol 26, Issue 7, p1623
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201400021