1. Crystalline Anionic Germanate Covalent Organic Framework for High CO 2 Selectivity and Fast Li Ion Conduction
- Author
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Shumaila Ashraf, Pengfei Li, Shuai Li, Hang Wang, Caixia Liu, Yiming Zuo, Xiao Feng, and Bo Wang
- Subjects
chemistry.chemical_classification ,Anthracene ,010405 organic chemistry ,Organic Chemistry ,Inorganic chemistry ,chemistry.chemical_element ,Germanium ,General Chemistry ,010402 general chemistry ,01 natural sciences ,Catalysis ,0104 chemical sciences ,chemistry.chemical_compound ,chemistry ,Covalent bond ,Lithium ,Germanate ,Counterion ,Selectivity ,Covalent organic framework - Abstract
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 CO2 uptake of 88.5 cm3 g-1 at 273 K and a high CO2 /N2 selectivity of 101. A significantly improved lithium ion conductivity of 0.25 mS cm-1 at room temperature was observed due to the soft germanium center.
- Published
- 2019
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