Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 59, Pages 13479-13483Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201903011
Keywords
CO2 selectivity; covalent organic frameworks; germanate frameworks; lithium ion conductivity; microwave synthesis
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Funding
- National Natural Science Foundation of China [81601549, 21674012, 21625102]
- 1000 Plan (Youth)
- Beijing Municipal Science and Technology Project [Z181100004418001]
- Beijing Institute of Technology Research Fund Program for Young Scholars
- Chinese scholarship council (CSC)
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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 cm(3) g(-1) at 273 K and a high CO2/N-2 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.
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