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Physicochemical properties of electrochemically prepared poly(pyrrole hexafluorophosphate)

✍ Scribed by Gi Ja Lee; Ran A Jeong; Seung Hwon Lee; Hong Seok Kim; Dong Hoon Lee; Keu Hong Kim; Kyungsoo Ahn

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
245 KB
Volume
68
Category
Article
ISSN
0021-8995

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✦ Synopsis

Poly(pyrrole hexafluorophosphate) (PPPF 6 ) 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 0.2 M pyrrole containing 0.1 M tetraethylammonium hexafluorophosphate as a supporting electrolyte. The result of elemental analysis and Fourier transform infrared spectrum showed that it was a PPPF 6 that was doped with Γ‡28 wt % PF 0 6 . From the cyclic voltammogram, it was found that the redox reaction of PPPF 6 was irreversible. Scanning electron microscopy was performed to know the morphology of PPPF 6 . The result of the differential scanning calorimetry did not show any special peak in temperature range of 25-800ЊC. From the temperature dependence of the electrical conductivity and electron spin resonance measurement, it was suggested that a possible conduction mechanism for the PPPF 6 polymer should be a small polaron hopping conduction.

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