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Abstract：
Type II porous liquids are demonstrated to be promise porous materials. However, the category of porous hosts is very limited. Here, a porous host metal-organic polyhedra (MOP-18) is reported to construct type II porous liquids. MOP-18 is dissolved into 15-crown-5 as an individual cage (5 nm). Both the molecular dynamics simulations and experimental gravimetric CO2 solubility test indicate that the inner cavity of MOP-18 in porous liquids is unoccupied by 15-crown-5 and is accessible to CO2 . Thus, the prepared porous liquids show enhanced gas solubility. Furthermore, the prepared porous liquid is encapsulated into graphene oxide (GO) nanoslits to form a GO-supported porous liquid membrane (GO-SPLM). Owing to the empty cavity of MOP-18 unit cages in porous liquids that reduces the gas diffusion barrier, GO-SPLM significantly enhances the permeability of gas.
摘要：
II型多孔液体被证明是有希望的多孔材料。然而,多孔宿主的类别非常有限。这里,据报道，多孔主体金属有机多面体（MOP-18）可构建II型多孔液体。将MOP-18溶解在15-冠-5中作为单独的笼(5nm)。分子动力学模拟和实验重量分析CO2溶解度测试均表明，MOP-18在多孔液体中的内腔未被15-crown-5占据，并且可以进入CO2。因此，制备的多孔液体显示出增强的气体溶解度。此外，将制备的多孔液体包封到氧化石墨烯(GO)纳米砂中,以形成GO负载的多孔液体膜(GO-SPLM)。由于MOP-18单元笼在多孔液体中的空腔减少了气体扩散屏障，GO-SPLM显著提高了气体的渗透性。
