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Updated: Jun 12, 2025
Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
A Dawson-type {P4W24} modified using phenylphosphonic acid with excellent proton conductivity
Jiayu Liu1, Wenjing Lei1, Shihao Zhang1
1Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemical and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China. jpwang@henu.edu.cn.
Abstract:
A case of organic-inorganic hybridized phosphotungstate modified using aromatic organophosphonic acid, K4Na4H11[KCo2(H2O)10P4W24O92{(PhPO)2}]·48H2O (1), was successfully synthesized in conventional aqueous solution. The prominent structural feature is that the total structure of [KP4W24O92{(PhPO)2}]23- resembles a V-shaped structure, which was stabilized by two [Co(H2O)5]2+ ions. Furthermore, it can be connected into a three-dimensional mesh structure using K+ ions. Surprisingly, 1 possesses a remarkably high proton conductivity of 1.59 × 10-2 S cm-1 at 95% RH and 318 K probably due to the fact that its structure contains large amounts of lattice water molecules, coordination water molecules and counter cations.
