Hyper-crosslinked polymers (HCPs) are a category of porous materials with the high specific surface area, abundant pore canal, and tunable structure. A very challenging topic is to fabricate ion-pair active sites into the skeleton structure of HCPs, which can endow HCPs with specific CO₂ separation and catalytic characters. In this work, a series of hyper-crosslinked polymers with the high specific surface area and tunable ion-pair active sites are fabricated by using a one-pot method with simultaneous quaternization and Friedel-Crafts reactions. These ion-pair-containing hyper-crosslinked polymers (IHCPs) are served as adsorbents for selective separation of CO₂ from CH₄ and N₂. It is found that CO₂ uptake of IHCP-2 reaches 2.87 mmol·g⁻¹ at 273 K and 1 bar, which is higher than that of the same type of ionic polymers that have been reported in the literature. The high CO₂ adsorption capacity is due to the abundant microporous and high specific surface area of as-prepared IHCPs. More importantly, these IHCPs can also be used as recyclable catalysts for cycloaddition of CO₂ and epoxides under metal- and cocatalyst-free conditions, affording corresponding cyclic carbonates in excellent yields. The high catalytic activity is attributed to synergistic contributions of the hierarchical pores and nucleophilic ion pair’s structure. This research provides an alternative strategy for development of bifunctional function materials towards efficient CO₂ capture and conversion.

超交联聚合物（HCPs）是一类具有高比表面积、丰富的孔道和可调结构的多孔材料。一个非常具有挑战性的课题是将离子对活性位点制造到HCPs的骨架结构中，这可以赋予HCPs特定的CO ₂分离和催化特性。在这项工作中，通过同时季铵化和傅克反应的一锅法制备了一系列具有高比表面积和可调离子对活性位点的超交联聚合物。这些含离子对的超交联聚合物 (IHCP) 用作吸附剂，用于从 CH ₄和 N _{2中选择性分离 CO 2}。发现CO ₂在 273 K 和 1 bar 下， IHCP-2 的吸收量达到 2.87 mmol·g ^-1，高于文献报道的同类型离子聚合物。高CO ₂吸附能力是由于所制备的IHCP具有丰富的微孔和高比表面积。更重要的是，这些 IHCP 还可以用作可回收催化剂，用于在无金属和无助催化剂的条件下进行 CO ₂和环氧化物的环加成反应，以优异的收率提供相应的环状碳酸酯。高催化活性归因于分级孔和亲核离子对结构的协同作用。该研究为开发高效 CO 的双功能功能材料提供了一种替代策略₂捕获和转换。