Mechanochemical synthesis of mixed metal, mixed linker, glass-forming metal–organic frameworks. Issue 8 (2nd April 2020)

• Record Type: Journal Article
• Authors: Thorne, Michael F.; Gómez, María Laura Ríos; Bumstead, Alice M.; Li, Shichun; Bennett, Thomas D.
• Is Part Of: Green chemistry. Volume 22:Issue 8(2020)
• Page Start: 2505
• Page End: 2512
• Publication Date: 2020-04-02
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d0gc00546k
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Methods to produce glass forming metal–organic frameworks (MOFs) rely on solvothermal syntheses which have high energy requirements, low yields and large teratogenic solvent usage. We present mechanochemical methods to overcome these issues. Abstract : Current methodologies to produce glass forming metal–organic frameworks (MOFs) rely on non-scalable solvothermal syntheses which have high energy requirements, relatively low yields and large teratogenic solvent usage. Here we use a mechanochemical method to produce the glass-forming MOFs, ZIF-62 and ZIF-UC-5, in 30 minutes at room temperature, using microlitre quantities of solvent and stoichiometric amounts of organic linkers. This method facilitates the accurate synthesis of ZIF-62 structures containing both Co and Zn, allowing the effect of metal-ion dopant upon melting temperature to be studied for the first time. Further to this, we present variable organic linker ratio series of ZIF-62 and of ZIF-UC-5. The specific composition of the materials in the series is made possible by the mechanochemical method. We also present a greener solvothermal method to form ZIF-62, which is capable of producing crystalline materials of suffcient quality for single crystal diffraction experiments.