Porous liquids (PLs), an emerging class of liquid materials with permanent porosity and good fluidity, have shown great potential in gas capture and separation. However, directly turning metal-organic frameworks (MOFs) into Type 1 PLs via post-synthetic modification (PSM) strategy with corona-canopy species has yet to be reported till now. Moreover, challenges including reducing the cost and simplifying the synthesis process are daunting. In present study, we propose a universal approach to turn UiO-66 into PLs via post-synthetic modification strategy with core-corona-canopy structure using organosilane (OS) corona and oligomer canopy species. The ionically-tethered canopy species endow UiO-66-OH with good liquid-like behaviors at room temperature. CO₂ and N₂ adsorption-desorption behaviors revealed that PLs possessed great potential in CO₂ selective adsorption separation. Meanwhile, the enhanced CO₂ selective capture sites were determined. As a proof-of-concept, the as-prepared PL UiO-66-liquid-M2070 was incorporated into Pebax polymer matrix to prepare mixed matrix membranes. The excellent dispersion ability, porous structures, and corona-canopy species contributed to the CO₂ selective permeation. Therefore, the CO₂ permeability and CO₂/N₂ selectivity of MMM P-UiO-66-liquid-50 increased by 396.5% and 81.3%, respectively, compared with that of pure Pebax membrane, presenting great attracting prospect in membrane separation. Moreover, the generality of this PSM strategy was confirmed using other different types of canopy species. Remarkably, this PSM strategy could be applied to synthesize other types of advanced porous materials (APMs)-based (e.g., covalent organic frameworks (COFs)) PLs by utilizing the rich library of oligomer species, thus undoubtedly advancing the applications of porous liquids in gas storage, separation and catalysis.

多孔液体（PLs）是一类新兴的具有永久孔隙度和良好流动性的液体材料，在气体捕获和分离方面显示出巨大潜力。然而，到目前为止，尚未有关于通过电晕冠层物种通过后合成修饰（PSM）策略将金属有机骨架（MOF）直接转化为1型PL的报道。而且，包括降低成本和简化合成过程的挑战令人生畏。在当前的研究中，我们提出了一种通用方法，通过使用有机硅烷（OS）电晕和低聚物冠层物质的后冠修饰结构，通过后合成修饰策略将UiO-66变成PL。离子束缚的树冠物质使UiO-66-OH在室温下具有良好的类似液体的行为。CO ₂和N ₂吸附-解吸行为表明PLs在CO ₂选择性吸附分离中具有巨大潜力。同时，确定了增强的CO ₂选择性捕获位点。作为概念验证，将制备好的PL UiO-66-液体-M2070掺入Pebax聚合物基质中以制备混合基质膜。优异的分散能力，多孔结构和电晕冠层种类有助于CO _2的选择性渗透。因此，CO _2的渗透性和CO ₂ / N ₂与纯Pebax膜相比，MMM P-UiO-66-liquid-50的选择性分别提高了396.5％和81.3％，在膜分离方面具有广阔的应用前景。此外，使用其他不同类型的树冠物种也证实了该PSM策略的普遍性。值得注意的是，该PSM策略可通过利用丰富的低聚物种类库来应用于合成其他类型的基于高级多孔材料（APM）的（例如，共价有机框架（COF））PL，从而无疑地促进了多孔液体在中的应用储气，分离和催化。