✍ Scribed by Viera Skákalová; Pavol Fedorko; Janusz Plocharski
No coin nor oath required. For personal study only.
Anomalies in the temperature dependence of the conductivity of BF~4~^−^ doped polypyrrole were observed in cyclic measurements at temperatures between 250 K and 310 K. The anomalies were accompanied by endothermic effects in differential scanning calorimetry and are interpreted as being due to conformational changes (creation and disappearance of conformational defects) in the polymer chains. The conformational defects are supposed to influence the energy and the concentration of bipolarons and, consequently, the transport in the polymer.
📜 SIMILAR VOLUMES
Nanoscopic conducting polypyrrole powder was prepared in an oil/water microemulsion with FeCl 3 as a dopant. Compared with solution and conventional emulsion polymerizations, a microemulsion polymerization system increases the yield of the resultant polypyrrole. The results of FTIR spectra and therm