Synthesis, characterization, and electrical response of phosphazene polyelectrolytes

Article abstract of DOI:10.1021/ja00193a047

New phosphazene-based polymers have been synthesized, which function as single-ion conductors of either sodium or halide ions. As a prelude to the synthesis of these polymers, similar substitution reactions were carried out on hexchlorocyclotriphosphazene and the products were well characterized. The polyelectrolytes were characterized by ¹H NMR, ³¹P NMR, IR, DSC, and ac complex impedance studies. The temperature dependence of the conductivity of these polyelectrolytes follows the VTF equation, indicating that, as with polymer-salt complexes, ion transport is promoted by polymer-segment motion. The ionic conductivity of the polyelectrolytes containing bromide and iodide is 2 orders of magnitude higher than that of the sodium polyelectrolytes at 30-80°C.