Thermal Properties and Ionic Conductivity of Side Chain Polymers Having Imidazolium Salt

We synthesized polymethacrylate containing imidazolium salts via three aromatic rings in the side chain. A smectic phase is shown for the polymer having imidazolium salts with Br anion. Temperature dependence of ionic conductivity for the polymers is observed. The ionic conductivity of the polymers increased with increasing temperature. The ionic conductivity of the polymersis about 10−9–10−8 Scm−1 near room temperature. The highest ionic conductivity of the polymers is about 10−5 Scm−1 at 130°C.