Thiophenes containing alkylester groups in the beta position of the ri
ng have been electropolymerized on Pt. The fraction of the polymer fil
ms that became soluble in chloroform has been analysed by spectroscopi
c techniques and by size exclusion chromatography, with the aim of com
paring them with the chemically prepared corresponding macromolecules.
The electrochemical behaviour, i.e., the charge process of the polyth
iophene coatings, has been studied and the relevant parameters have be
en discussed.