CONDUCTING POLYMER SENSORS FOR THE AMPEROMETRIC DETECTION OF PROTEINSIN A FLOW SYSTEM - THE USE OF SULFONATED DYE COUNTERIONS TO INDUCE SELECTIVITY

In this article, we have demonstrated the feasibility of using dye bin ding interactions for the amperometric detection of proteins at conduc ting polymer coated electrodes with how injection analysis. Incorporat ion of appropriate dyes into the conducting polymer during synthesis e nables sensitive and selective responses to be obtained. The effects o f eluent pH and applied potential on the responses obtained for a rang e of proteins have been investigated. These parameters can be used to modify selectivity and achieve sensitivity.