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Morphology And Microstructure Of Polypyrrole Formed By Electrochemical Polymerization
Published 1997 · Materials Science
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Using a needle–circle electrode configuration in an electrolyte solution of acetonitrile containing sodium p-toluenesulfonate and monomer, we prepared polypyrrole (PPy) with fractal pattern by electrochemical polymerization. We classify the growth patterns and draw a phase diagram on the basis of the experiments, investigating the relationship between fractal patterns and the growth conditions. A previously unrecognized morphological transition under constant voltage is reported. The microstructure of PPy is also displayed.