Département de chimie moléculaire

A new matrix was designed and produced, which entailed the co-electropolymn. of pyrrole-biotin (Py-B) with pyrrole-alginate (Alg-Py). The aim was to demonstrate that improved performance could be obtained in a classical model system such as monitoring for the presence of glucose. The sensor construction consisted of the conjugation of biotinylated-glucose oxidase (B-GOx) to B-Py through avidin (Av) bridges, followed by copolymn. with Alg-Py. When the aforementioned set-up did not include the pyrrole-modified alginate but unmodified alginate, its performance values were significantly less. During measurement of the concn. of the model glucose analyte via hydrogen peroxide oxidn., the current was obsd. to be conducted faster to the electrode surface, therefore providing a lower response time, and a higher sensitivity value, using a relatively low enzyme load. [on SciFinder(R)]