摘要
Polyhaloalkanes are broadly useful yet environmentally harmful stock chemicals,therefore the development of adsorbent materials with capacity and selectivity for polyhaloalkane vapors is highly desirable.Here we report a novel macrocycle WreathArene,a fluorinated C;-symmetrical [1;]-paracyclophane.In the crysalline state,WreathArene features guest-adaptive polymorphism for polyhaloalkanes including chloroform,tribromomethane,1,1,2-trichloroethane,and 1,2-dibromoethane.Non-covalent C-halogen…πinteractions are observed in all of these host-guest structures.Based on these properties,the activated WreathArene crystals can be utilized as a selective and recyclable adsorbent for polyhaloalkane vapors with excellent capacity under user-friendly conditions.
基金
Financial support from the National Natural Science Foundation of China (Nos. 21672227, 21922113, 21988102, 22071257)
Chinese Academy of Sciences (Nos. XDB17000000)
the National Key Research and Development Program (No. 2017YFA0206903)
K. C.Wong Education Foundation
the TIPC Director’s Fund。
