State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
J Am Chem Soc. 2020 Aug 5;142(31):13334-13338. doi: 10.1021/jacs.0c06485. Epub 2020 Jul 22.
Three-dimensional (3D) covalent organic frameworks (COFs) are excellent crystalline porous polymers for numerous potential applications, but their building units and topological nets have been limited. Herein we report the design and synthesis of the first 3D large-pore COF with the topology constructed from a 6-connected triptycene-based monomer. The new COF (termed JUC-564) has a high specific surface area (up to 3300 m g), the largest pore size among 3D COFs (43 Å), and record-breaking low density among crystalline materials reported to date (0.108 g cm). The large pore size of JUC-564 was confirmed by the incorporation of a protein. This study expands the structural varieties of 3D COFs based on the deliberate symmetry-guided design principle as well as their applications for adsorption and separation of large biological molecules.
三维（3D）共价有机骨架（COF）是一类优秀的结晶多孔聚合物，在众多潜在应用中具有很大的优势，但它们的构建单元和拓扑网络一直受到限制。在此，我们报告了首例由 6 连接三蝶烯基单体构筑的拓扑结构的 3D 大孔 COF 的设计与合成。这种新型 COF（命名为 JUC-564）具有高比表面积（高达 3300 m²/g），是 3D COF 中孔径最大的（43 Å），也是迄今为止报道的结晶材料中密度最低的（0.108 g/cm³）。通过蛋白质的引入证实了 JUC-564 的大孔径。这项研究扩展了基于刻意对称引导设计原则的 3D COF 的结构多样性，以及它们在大生物分子吸附和分离方面的应用。
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