BIOSENSOR ON THE BASE OF POLYPYRROLE MODIFIED ULTRAMICROELECTRODE ARRAYS

A novel approach for the construction of a micro biosensor on the base of amperometric enzyme microelectrode arrays is described in this pap er. The technique contains the electrochemical deposition of different enzymes in a conducting organic polymer, e.g. polypyrrole, on a trans ducer built up with the help of microfabrication technology. The elect rochemical characteristics of these microelectrode arrays can be compa red to conventional microelectrodes with the advantage of higher curre nt outputs. For the first time different model enzymes like glucose ox idase, choline oxidase and lactate oxidase have been tested showing th e principal possibility to construct a micro biosensor on the base of ultramicroelectrode arrays.