Porous liquids are fluids with the permanent porosity, which can overcome the poor gas solubility limitations of conventional porous solid materials for three phase gas-liquid-solid reactions. However, preparation of porous liquids still requires the complicated and tedious use of porous hosts and bulky liquids. Herein, we develop a facile method to produce a porous metal-organic cage (MOC) liquid (Im-PL-Cage) by self-assembly of long polyethylene glycol (PEG)-imidazolium chain functional linkers, calixarene molecules and Zn ions. The Im-PL-Cage in neat liquid has permanent porosity and fluidity, endowing it with a high capacity of CO₂ adsorption. Thus, the CO₂ stored in an Im-PL-Cage can be efficiently converted to the value-added formylation product in the atmosphere, which far exceeds the porous MOC solid and nonporous PEG-imidazolium counterparts. This work offers a new method to prepare neat porous liquids for catalytic transformation of adsorbed gas molecules.

多孔液体是具有永久孔隙率的流体，它可以克服传统多孔固体材料在气-液-固三相反应中气体溶解度差的局限性。然而，多孔液体的制备仍然需要复杂而繁琐地使用多孔主体和大体积液体。在此，我们开发了一种简便的方法，通过长聚乙二醇 (PEG)-咪唑鎓链功能接头、杯芳烃分子和 Zn 离子的自组装来生产多孔金属有机笼 (MOC) 液体 (Im-PL-Cage)。纯液体中的 Im-PL-Cage 具有永久性孔隙率和流动性，赋予其高 CO ₂吸附能力。因此，CO ₂存储在 Im-PL-Cage 中的分子可以在大气中有效地转化为增值的甲酰化产物，这远远超过多孔 MOC 固体和无孔 PEG-咪唑盐对应物。这项工作为制备用于吸附气体分子催化转化的纯多孔液体提供了一种新方法。