Studies on Substituted Derivatives of Polyaniline: Effect of Polymerization Conditions on Electrical Conductivity |
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| Authors: | S S Umare M M Huque M C Gupta S G Viswanath |
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| Institution: | 1. Department of Chemistry , Nagpur University , Nagpur , 440010 , India;2. Department of Chemistry , Nagpur University , Nagpur , 440010 , India;3. Chemistry Department , Bangladesh University of Engineering and Technology , Dhaka , 1000 , Bangladesh;4. Laxminarayan Institute of Technology, Nagpur University , Nagpur , 440010 , India |
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| Abstract: | Abstract Polyaniline, poly(o-methoxyaniline)and poly(N-phenylaniline) were synthesized chemically under different polymerization conditions by peroxodisulphate oxidation in HCl and in a mixture of HCl and CH3CN. The polymer prepared at 0°C, monomer-oxidant ratio 1:1.15 and a strong acidic medium, has the least bandgap and maximum electrical conductivity. The electrical conductivity depends on degree of oxidation and protonation. The bulky substituents increase the torsion angle and hence disorder causes the decrease in the electrical conductivity of polymer. |
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