Controlled introduction of metal cations into polymerizable ionic liquid-polyoxomolybdate hybrid crystals

Abstract

A polymerizable ionic-liquid cation having methacryl group and imidazolium moieties (denoted as MAImC₁) was successfully hybridized with octamolybdate (Mo₈O₂₆⁴⁻, Mo₈) to obtain inorganic–organic hybrid crystals containing monovalent metal cations. The hybrid crystals were initially prepared as sodium ion-containing hybrid crystal of MAImC₁–Na–Mo₈. The sodium cations in MAImC₁–Na–Mo₈ were exchangeable to other monovalent metal cations such as silver or potassium to form hybrid crystals of MAImC₁–Ag–Mo₈ or MAImC₁–K–Mo₈. Their molecular and crystal structures were clearly revealed by single crystal X-ray analyses. The MAImC₁–Na–Mo₈ hybrid crystal worked as the hybrid monomer, and was found polymerizable by a radical polymerization using AIBN as an initiator to obtain inorganic–organic polymers (P-MAImC₁–Na–Mo₈). The conductivities of the hybrid monomer and polymer consisting of MAImC₁–Na–Mo₈ were investigated.