Physicochemical properties of electrochemically prepared poly(pyrrole hexafluorophosphate)

摘要

Poly(pyrrole hexafluorophosphate) (PPPF6) was prepared with the potentiostatic method to supply a constant potential of 1.21 V for 5 h in water/acetonitrile (1/99 vol %) solution of 0.2M pyrrole containing 0.1M tetraethylammonium hexafluorophosphate as a supporting electrolyte. The result of elemental analysis and Fourier transform infrared spectrum showed that it was a PPPF6 that was doped with similar to 28 wt % PF6-. From the cyclic voltammogram, it was found that the redox reaction of PPPF6 was irreversible. Scanning electron microscopy was performed to know the morphology of PPPF6. The result of the differential scanning calorimetry did not show any special peak in temperature range of 25-800 degrees C. From the temperature dependence of the electrical conductivity and electron spin resonance measurement, it was suggested that a possible conduction mechanism for the PPPF6 polymer should be a small polaron hopping conduction. (C) 1998 John Wiley & Sons, Inc. [References: 24]