Preparation of a Mg2+-containing MOF through ion exchange and its high ionic conductivity

Abstract

We report, for the first time, the preparation and ionic conductivity of a Mg²⁺-containing metal–organic framework (MOF) having type A features, i.e., an anionic framework containing Mg²⁺ as the counter cation. We prepared Mg₃[(MnMo₆O₁₈)₂L] (L¹²⁻ = C{C₆H₄CHNC(CH₂O)₃}₄¹²⁻) (MOF-688-Mg) through a simple ion exchange reaction, and it showed high ionic conductivity above 10⁻⁵ S cm⁻¹ at 25 °C under MeCN vapor.