Abstract
The chemical polymerization of aniline in anhydrous medium was investigated using periodic acid, H 5IO 6 as an oxidant. This is the first time that H 5IO 6 has been used as an oxidant in the chemical synthesis of conductive polymers. The product was characterized by FTIR, UV–vis spectroscopies, scanning electron microscope (SEM), energy dispersive X-ray (EDX) spectroscopy, thermogravimetric (TG) analysis, and electrical conductivity measurements. EDX and thermogravimetric analysis showed that Pani includes ClO 4 − and iodine or iodide ion as dopants. Electrical conductivity of polyaniline with H 5IO 6 was measured as 100 S cm −1. H 5IO 6 oxidant produces first IO 3 − and then I 2. Therefore, it could ensure both oxidation of aniline by IO 3 − and then doping polyaniline with I 2, without any residual oxidant contamination. I 2, which is a well known extrinsic dopant, was produced intrinsically in this study. Thus, H 5IO 6 was found to be an effective oxidant material for the chemical polymerization of aniline.
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