Functionalisation of monolayer-modified electrodes by covalent coupling ofo-phenylenediamine monomer molecules

The electrochemical properties of self-assembled alkanethiol monolayers on polycrystalline gold electrodes were studied by means of cyclic voltammetry (CV). These films were functionalized by covalent coupling of the o-phenyl enediamine (o-PDA) monomer molecules to the alkanethiol monomolecular him, such as to form the centers for further electropolymerization reaction on t he surface of the film. The rationale behind this a pp roach was to form th e molecular 'wires' of conducting polymer with their structure imposed by t he molecular organization of a monolayer and by the covalent linkage of the monomer molecules. (C) 2000 Elsevier Science Ltd. All rights reserved.