ELECTROGENERATION OF POLY(2,5-DI-(2-THIENYL)-PYRROLE) IN ACETONITRILE- KINETICS, PRODUCTIVITY AND COMPOSITION OF THE OXIDIZED FORM

Poly(2,5-di-(2-thienyl)-pyrrole) (poly(SNS)) was synthesized on a Pt e lectrode by flow of an anodic constant current density of 0.5 mA cm(-2 ) through a solution containing the monomer SNS and LiClO4 in acetonit rile. The obtained polymer weight was followed by 'ex situ' ultramicro gravimetry. Kinetics were followed as a function of temperature, monom er concentration and electrolyte concentration. Two different kinetic regions were found at lower or greater polarization times than 100 s. Productivities of the polymerization charge (as mg of polymer produced per mC of consumed charge), composition (by elemental analysis) and t he subsequent number of electrons required to incorporate a monomeric unit into the polymer were determined from different samples.