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A Porous Metal–Organic Framework Assembled by Cu30 Nanocages: Serving as Recyclable Catalysts for CO2 Fixation with Aziridines

机译:Cu30纳米笼子组装的多孔金属有机骨架:用作可回收的催化剂用于固定氮丙啶与二氧化碳

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摘要

Based on a novel ligand 5‐(2,6‐bis(4‐carboxyphenyl)pyridin‐4‐yl)isophthalic acid (H4BCP) with large skeletons, a unique porous framework {[Cu2(BCP)(H2O)2]·3DMF}n (>1) assembled by nano‐sized and censer‐like [Cu30] cages is successfully obtained and structurally characterized. In >1, the large 1D channel in frameworks and window size in the nanocages can enrich methylene blue and capture CO2, exhibiting the promising applications in environmental protection. More importantly, the explorations on the cycloaddition reaction of CO2 and aziridines with various substituents suggest that >1 can serve as an efficient heterogeneous catalyst for CO2 conversion with aziridines in a solvent‐free system, which can be reused at least ten times without any obvious loss in catalytic activity. This is the first example of metal–organic framework (MOF)‐based catalysts in converting CO2 into high‐value oxazolidinones through activating aziridines and CO2, further extending the applications of MOFs materials in catalysis.
机译:基于具有大骨架的新型配体5-(2,6-双(4-羧苯基)吡啶-4-基)间苯二甲酸(H4BCP),独特的多孔骨架{[Cu2(BCP)(H2O)2]·3DMF } n(> 1 )由纳米尺寸和香炉状[Cu30]笼子组装而成,并进行了结构表征。在> 1 中,纳米笼中框架中的大一维通道和窗口尺寸可以富集亚甲蓝并捕获CO2,在环境保护方面具有广阔的应用前景。更重要的是,对CO2和具有各种取代基的氮丙啶的环加成反应的探索表明,> 1 可以在无溶剂体系中用作氮丙啶转化CO2的高效多相催化剂,可在至少十次而没有明显的催化活性损失。这是基于金属-有机骨架(MOF)的催化剂通过活化氮丙啶和CO2将CO2转化为高价值的恶唑烷酮的第一个实例,进一步扩展了MOFs材料在催化中的应用。

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