A self-assembled framework that interpenetrates in crystal but does not interpenetrate in solution  

作　　者：Bo Yang Jian-Wei Zhang Shang-Bo Yu Ze-Kun Wang Pan-Qing Zhang Xiao-Di Yang Qiao-Yan Qi Guan-Yu Yang Da Ma Zhan-Ting Li 

机构地区：[1]College of Chemistry,Zhengzhou University,Zhengzhou 450001,China [2]Innovation Research Institute of Traditional Chinese Medicine,Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China [3]Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China [4]Department of Chemistry,Fudan University,Shanghai 200438,China

出　　处：《Science China Chemistry》2021年第7期1228-1234,共7页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21890732,21890730,21921003)。

摘　　要：A porous supramolecular framework has been for the first time revealed to undergo interpenetration in crystal and noninterpenetration in solution.A new supramolecular organic framework Bu-SOF has been constructed from the co-assembly of a tetracationic tetrahedral monomer and cucurbit[8]uril(CB[8])in water through the encapsulation of two anti-parallel n-butyl chains by CB[8].X-ray diffraction analysis reveals that Bu-SOF forms 3-fold interpenetrated networks in crystals grown by evaporation of its solution in water.1 H NMR,dynamic light scattering and isothermal titration calorimetric experiments confirm that Bu-SOF is also formed in water.Solid samples,prepared by lyophilizing the aqueous solution of Bu-SOF,can adsorb nanoscaled organic dyes,supporting the porosity of the framework and thus non-interpenetration in solution.The avoidance of interpenetration of Bu-SOF in solution has been attributed to the filling of water inside the porous framework as well as the electrostatic repulsion of the appended bipyridinium units of the tetrahedral building block.

关 键 词：supramolecular organic framework CUCURBIT[8]URIL CRYSTAL INTERPENETRATION non-interpenetration 

分 类 号：O641.3[理学—物理化学]