High Performance Polymers, 2nd Edition

8 HIGH PERFORMANCE POLYMERS

deposition of a conducting film of PVK onto the

surface of a working electrode [47].

Electrochemical polymerization of NVK in organic

solvents such as dichloromethane and acetonitrile

yields both a white-colored nonconducting PVK and

a green-colored conducting PVK. The nonconduct-

ing PVK precipitates in electrolyte solution, whereas

the conducting PVK covers the electrode surface as a

green-colored film.

In dioxane H

2

SO

4

, no conductingPVK is formed on

the electrode surface in electrolysis experiments done

with acid concentrations below 2.0 M H

2

SO

4

.How-

ever, conducting PVK is formed at lower acid con-

centrations when the solvent ...