Effect of molecular interactions on solubility of polypyrrole

Molecular interactions in polypyrrole (PPy) doped with dodecylbenzene sulfo nic acid anion were studied as a key factor. affecting solubility of thr po lymer. The bulky dopant molecules are able to restrain the molecular intera ctions in as-polymerized PPy, but molecular interaction increases gradually as time elapses, causing insolubilization of PPy powder. Insolubilization results mainly from a formation of crosslinks between polymer chains.