Premium
Crystalline Anionic Germanate Covalent Organic Framework for High CO 2 Selectivity and Fast Li Ion Conduction
Author(s) -
Ashraf Shumaila,
Zuo Yiming,
Li Shuai,
Liu Caixia,
Wang Hang,
Feng Xiao,
Li Pengfei,
Wang Bo
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201903011
Subject(s) - germanate , covalent bond , counterion , selectivity , ion , lithium (medication) , covalent organic framework , chemistry , anthracene , germanium , inorganic chemistry , conductivity , materials science , crystallography , photochemistry , organic chemistry , silicon , medicine , endocrinology , catalysis
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 2 uptake of 88.5 cm 3 g −1 at 273 K and a high CO 2 /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.