Characterization of electrochemically synthesized alkylpyrrole intrinsically conducting polymers

✍ Scribed by Nicola Costantini; Simone Capaccioli,; Marco Geppi; Giacomo Ruggeri,

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 219 KB
• Volume: 11
• Category: Article
• ISSN: 1042-7147
• DOI: 10.1002/(sici)1099-1581(200001)11:1<27::aid-pat934>3.0.co;2-k

✦ Synopsis

This work concerns some electrochemical polymerizations of pyrrole derivatives in order to obtain intrinsically conducting polymers: the study was mainly concerned with the electrochemical polymerization of 3-alkyl substituted pyrroles with different chain lengths (3hexylpyrrole, 3-decylpyrrole, 3-hexadecylpyrrole). Different experimental conditions were adopted with 3alkylpyrroles: different solvents (propylene carbonate, acetonitrile), different counterions (ClO 4 À , BF 4 À , NO 3 À , PF 6 À , TsO À ) and different current densities (0.05, 0.1, 0.2, 0.4 mA/cm 2 ). The synthesized conducting polymers were characterized through Fourier transform infrared spectroscopy, 13 C cross-polarization magic angle spinning solid-state nuclear magnetic resonance and electrical conductivity measurements to study the relations connecting the experimental conditions of synthesis with the structure and electrical properties of the polymers. Thermogravimetric analysis, differential scanning calorimetry and isothermal heatings were performed in order to evaluate the polymer's thermal stability. Copyright Ó 2000 John Wiley & Sons, Ltd.