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Front Cover: Carbon Dioxide Conversion Upgraded by Host‐guest Cooperation between Nitrogen‐Rich Covalent Organic Framework and Imidazolium‐Based Ionic Polymer (ChemSusChem 23/2020)
Author(s) -
Zhong Hong,
Gao Jinwei,
Sa Rongjian,
Yang Shuailong,
Wu Zhicheng,
Wang Ruihu
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202002412
Subject(s) - ionic liquid , ionic bonding , chemistry , covalent bond , hydrogen bond , catalysis , selectivity , covalent organic framework , adsorption , polymer , nucleophile , sorption , polymer chemistry , organic chemistry , molecule , ion
The Front Cover shows how host–guest composite catalysts with task‐specific components have been developed through integrating nitrogen‐rich covalent organic framework (TT‐COF) and imidazolium‐based ionic polymer (ImIP). TT‐COF possesses good CO 2 sorption ability, high adsorption selectivity of CO 2 over N 2 , high nitrogen content, and periodic hydrogen‐bonding donor ability, leading to high concentration of CO 2 around active sites. The nucleophilic Br ‐ anion from ImIP and the hydrogen‐bonding donor from TT‐COF synchronously promote the ring opening of the epoxides for the formation of the oxyanion intermediate. The synergistic interaction enables the catalytic activity of ImIP@TT‐COF to be much higher than those of the individual counterparts or their physical mixture in the cycloaddition reaction of CO 2 with epoxides. More information can be found in the Full Paper by H. Zhong et al.