The present invention deals with the electrochemical synthesis of
electrically conductive polymers in supercritical fluids, for example
supercritical CO.sub.2. The use of the supercritical fluid as a solvent
results in the reduction or elimination of hazardous reagents and
environmentally hazardous waste, which was generated in the prior
chemical synthesis techniques. The electrochemical approach eliminates
the need to add a charge transfer agent as the electrode serves this
purpose. The resulting polymers are characterized by high conductivities
and distinctive surface morphology, which suggests that they may be more
appropriate than the previous materials for certain applications (e.g.,
corrosion inhibition, optical applications, etc.).