Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, China.
Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Chemistry. 2019 Oct 22;25(59):13479-13483. doi: 10.1002/chem.201903011. Epub 2019 Aug 20.
The metalloid-centered covalent organic framework has attracted great interest from both its structure and application. Heavier elements have seldomly been incorporated in the covalent organic frameworks, even if they exhibit special structural features and properties. Herein, we reported the first crystalline germanate covalent organic framework with hexacoordinated germanate linked by an anthracene linker. The existence of counterion lithium ions in the framework provides a high CO uptake of 88.5 cm g at 273 K and a high CO /N selectivity of 101. A significantly improved lithium ion conductivity of 0.25 mS cm at room temperature was observed due to the soft germanium center.
金属中心共价有机骨架因其结构和应用引起了极大的兴趣。尽管较重的元素具有特殊的结构特征和性质，但它们很少被纳入共价有机骨架中。在此，我们报道了首例具有六配位锗酸根的结晶锗酸共价有机骨架，该骨架由蒽连接体连接而成。框架中锂离子的存在提供了在 273 K 时高达 88.5 cm3 g-1 的高 CO 吸附量和 101 的高 CO/N 选择性。由于软锗中心，观察到室温下锂离子电导率显著提高至 0.25 mS cm-1。
