Preserving Mesoporosity in Type III Porous Liquids through Dual-layer Surface Weaving

We present a dual-layer surface weaving strategy that can disregard this limitation and achieve micro- and mesoporous metal-organic framework (MOF)-based T3PLs even with apertures much larger than the solvent molecules. By first weaving a tight network of poly(tert-butyl methacrylate) on the MOF surface, the poly(dimethylsiloxane) (PDMS) solvent can be effectively excluded from the pores while smaller guest molecules such as CO2, C2H4, and H2O can freely access the interior, as confirmed by low-pressure adsorption isotherms. Further application of a PDMS-containing polymer coating helps lower the viscosity of the PL due to increased particle dispersibility. This strategy has resulted in the successful construction of T3PLs with aperture sizes up to 3.1 nm.PMID:38588044 | DOI:10.1002/anie.202405288

Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Siqi Li Dongxu Wang Yongjin Lee Tao Li Source Type: research