
TY  - JOUR
A1  - Baker, P 
A1  - Matthews, D 
A1  - Hope, A 
T1  - The Preparation and Characterization of Colloidal Polypyrrole
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1994
VL  - 47
IS  - 1
SP  - 1
EP  - 6
KW  - 
UR  - https://doi.org/10.1071/CH9940001 
N2  - This paper describes the preparation and properties of colloidal polypyrrole. The polypyrrole was prepared by the oxidation of pyrrole with potassium persulfate in acidic, 25% aqueous, ethanol at 95&#176;C. Absorption spectra showed that the reaction produced both unoxidized  polypyrrole (ppy0) and oxidized polypyrrole ( ppy +), which were separated by precipitating the ppy + with water. The resulting ppy + was readily redispersed in ethanol to yield a strongly coloured , transparent, dispersion. Cyclic voltammetry of the dispersion yielded well defined peaks for reduction and reoxidation with a standard reduction potential of approximately -0.39 V v . s.c.e . The ppy + was also characterized by fluorescence spectroscopy, proton magnetic resonance spectroscopy and electron microscopy. 
ER  -

