Transforming Porous Organic Cages into Porous Ionic Liquids via a Supramolecular Complexation Strategy

Abstract

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An In Situ Coupling Strategy toward Porous Carbon Liquid with Permanent Porosity

“…in hindered solvents (e.g., 15‐crown‐5, 18‐crown‐6, poly(dimethylsiloxane), phosphonium‐based ionic liquid and branched ionic liquids. ); [ 2,5–14 ] suitable surface engineering of porous structures (e.g., hollow silica and silicalite‐1 with an organosilane, as well as hollow carbon spheres with polymerized ionic liquids as coronas, respectively, which were subsequently modified with an ionic attachment of liquid polyethylene glycol chains as canopy; [ 3,15–17 ] ) as well as the liquefaction of metal–organic framework (i.e., ZIF‐4) above its melting temperature. [ 18 ] However, preparing liquid porous materials with permanent porosity is still challenging due to several obstacles, such as the intermolecular self‐filling phenomenon, easy collapse and decomposition of the discrete hosts, as well as the setting and agglomeration of the microporous structures, and more.…”

Gas Storage in Porous Molecular Materials

“…Dai and co‐workers recently reported the synthesis of type I and type II ionic porous liquids based on functionalized anionic organic cages, whose charge was balanced by a crown‐ether‐encapsulated potassium cation. The porous liquids prepared through this approach, were shown to display a CO 2 uptake of 0.4 mmol g −1 at 10 bar and 298 K [233] . Metal–organic coordination cages have also been incorporated in porous liquids.…”

Unraveling the mechanism of CO2 capture and separation by porous liquids

“…However, the difficulty of preparation greatly limits the development of porous liquids, resulting in a few related reports, [14][15][16][17][18][19][20][21][22][23][24] many of which are more about porous organic cages. 25 Jie et al 15 successfully developed a porous liquid based on an anionic organic covalent cage and crown ether through a supramolecular complexation strategy. James et al 22 modied the vertices of porous organic cages (POCs) with alkyl groups to make type I porous liquid.…”