Porous aromatic frameworks (PAFs) are promising functional porous solids known for their feasible amenability and extraordinary stability. When the framework modified by ionic functional groups, the given ionic PAFs (iPAFs) exhibited charged channels for adsorption, separation and catalysis. However, the surface areas of ionic porous frameworks are usually lower than the neutral ones, and their synthesis limited by specific strategies and complex modifying processes. To overcome these problems, we proposed an intuitive route to construct ionic porous framework with high specific surface area, through a multivariable synthesis strategy. Herein, multivariate ionic porous aromatic framework (MTV‐iPAFs) material named PAF‐270 was synthesized from readily available building units with ionic functional groups. PAF‐270 exhibited hierarchical structure with the highest specific surface area among reported imidazolium functionalized PAFs. Leveraging its physical and chemical properties, we explored its availability for polyoxometalates loading and heterogeneous catalysis. PAF‐270 exhibited high adsorption capacity up to 50% for both H3O40PW12 (HPW) and (NH4)5H6PV8Mo4O40 (V8). HPW@PAF‐270 and V8@PAF‐270 exhibited excellent catalytic abilities for oleic acid esterification and extractive oxidative desulfurization, respectively. Due to the stability of PAFs, these materials also showed remarkable resistance to temperature and pH changes. These results highlight the potential application of MTV‐iPAFs as functional porous materials.

中文翻译：

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嵌入多金属氧酸盐的离子多孔芳香骨架用于多相催化

多孔芳香骨架（PAF）是一种很有前途的功能性多孔固体，以其可行的适应性和非凡的稳定性而闻名。当框架被离子官能团修饰时，给定的离子PAF（iPAF）表现出用于吸附、分离和催化的带电通道。然而，离子多孔骨架的表面积通常低于中性骨架，其合成受到特定策略和复杂改性过程的限制。为了克服这些问题，我们提出了一种通过多变量合成策略构建具有高比表面积的离子多孔框架的直观途径。在此，由具有离子官能团的现成结构单元合成了名为 PAF-270 的多元离子多孔芳香骨架（MTV-iPAF）材料。 PAF-270 表现出分级结构，在已报道的咪唑功能化 PAF 中具有最高的比表面积。利用其物理和化学性质，我们探索了其在多金属氧酸盐负载和多相催化方面的可用性。 PAF-270 对 H3O40PW12 (HPW) 和 (NH4)5H6PV8Mo4O40 (V8) 均表现出高达 50% 的高吸附容量。 HPW@PAF-270和V8@PAF-270分别对油酸酯化和萃取氧化脱硫表现出优异的催化能力。由于 PAF 的稳定性，这些材料还表现出显着的耐温度和 pH 变化的能力。这些结果凸显了 MTV-iPAF 作为功能性多孔材料的潜在应用。