Cations mediating proton conductivity in an oxalate based microporous coordination polymer

Abstract

Through cation substitution in a zirconium based coordination polymer, an isostructural framework 1@NH₄⁺ has been prepared without any apparent structural change. The proton conductivity of 1@NH₄⁺ is successfully improved. It exhibits high proton conductivity (1.39 × 10⁻² S cm⁻¹) at 98% relative humidity and 60 °C.