| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9776291 | Synthetic Metals | 2005 | 4 Pages |
Abstract
The electrosynthesis of a composite polypyrrole-dextran-sulphite oxidase (PPy-Dex-SOx) film was carried out by galvanostatic polymerisation. The simultaneous formation of a conducting polypyrrole support and the entrapment of sulfite oxidase (SOx) on a platinum electrode was accomplished in an aqueous solution which contained 0.5Â M pyrrole, 0.02Â g/1 dextran and 8Â units/ml SOx at an applied current density of 0.25Â mA/cm2 and a polymerization time of 25Â sec. The conductivity of the resulting composite PPy-Dex-SOx film was as high as that of polypyrrole- sulfite oxidase (PPy-SOx) film, but the presence of dextran improved the mechanical stability of the composite film. The presence of SOx in the composite film was confirmed by scanning electron microscopy and arnperometric measurement of sulfite.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Biomaterials
Authors
Samuel B. Adeloju, Anita Ohanessian, Nguyen N. Duc,