Abstract
A cationic pyrrole derivative, N-(4-butyl-(1-methylimidazole)) pyrrole bro- mide (Py-Br) bearing an imidazolium-type ionic liquid moiety was synthesized. Micro- emulsion polymerization of Py-Br in water/oil microemulsions produced poly(N-(4-butyl- (1-methylimidazole)) pyrrole bromide) (PPy-Br) nanoparticles. The bromide anion of the resultant PPy-Br nanoparticles was exchanged in water with different anions, including BFand PFto produce new nanoparticles bearing different counteranions. The results of thermal analysis indicate that the thermal stability of cationic PPy nanoparticles strongly depends on the nature of counteranion. As an application, water-soluble PPy- Br with fine fluorescence property was used as a new sensor for DNA detection. V C 2008
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