Electrochemical synthesis of poly(3-methylthiophene): A kinetic study

✍ Scribed by I. Villarreal; E. Morales; J. L. Acosta

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 167 KB
• Volume: 38
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(20000501)38:9<1258::aid-polb17>3.0.co;2-w

✦ Synopsis

Poly(3-methylthiophene) (P3MT) films were electrogenerated on both platinum and carbon-felt working electrodes. The kinetic equation was determined by the monomer and electrolyte concentrations being changed for different reaction times. For each sample, the weight of the polymer obtained was measured along with the polymerization charge, the oxidation charge, the ratio (R) between the two magnitudes, the charge storage efficiency (SE), and the doping level. The results obtained from the kinetic study indicate significant electrolyte participation in the electropolymerization process. The SE and the doping level decreased inversely proportionately to both the reaction time and the concentrations of the monomer and electrolyte. The ratio R increased with reaction time as well as with monomer or electrolyte concentrations for all P3MTs generated on the carbon-felt electrodes, whereas for those films generated on platinum electrodes, the highest values were obtained for the lowest monomer and electrolyte concentrations.