Hacettepe University Institutional Repository (hacettepe.edu.tr) · 2003 · 18 citations · 0 references
Open access
Oligomerization reactions of thiophene and pyrrole monomers and chemical copolymerization of these oligomers were investigated in acetonitrile solutions containing thiophene-HBF4, pyrrole-HBF4 and thiophene-pyrrole-HBF4. According to the results obtained from these studies, chemical oxidative polymerization of pyrrole and thiophene-pyrrole mixture occurs when anhydrous FeCl3 is used as oxidative agent in the presence of various amounts of HBF4. It was observed that homopolymer and copolymer colloids of different compositions are formed, respectively, depending on the concentration of HBF4 used. These polymers were characterized with TGA, DSC, UV-Vis, FTIR techniques and elemental analysis. Indroduction The field of conducting polymers has attracted the interest of many academic and industrial researchers. The properties of these organic polymers have led to use them in various applications, such as anti-static and anti-corrosion coating materials, sensors, batteries and supercapacitors, light emitting diodes, electrochromic devices and