文献类型：期刊文献

英文题名：Multiple noncovalent interaction constructed polymeric supramolecular crystals: Recognition of butyl viologen by: Para -dicyclohexanocucurbit[6]uril and α,α′,δ,δ′-tetramethylcucurbit[6]uril

作者：Xiao, Zhi-You Lin, Rui-Lian Tao, Zhu Liu, Qing-Yun Liu, Jing-Xin Xiao, Xin

第一作者：肖志友

通信作者：Liu, Jing-Xin

机构：[1] School of Chemical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, 243002, China; [3] College of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China; [4] Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China

第一机构：贵州理工学院化学工程学院

年份：2017

卷号：4

期号：12

起止页码：2422-2427

外文期刊名：Organic Chemistry Frontiers

收录：EI(收录号：20184806137363);Scopus(收录号：2-s2.0-85035000970)

基金：This work was financially supported by the National Natural Science Foundation of China (No. 21561007, 21371004), the Innovation Program for High-level Talents of Guizhou Province (No. 2016-5657), and the Science and Technology Fund of Guizhou Province (No. 2016-1030, 2013-2263).

语种：英文

外文关键词：Binding energy - Crystals - Ions - Nuclear magnetic resonance spectroscopy - Polymers - Supramolecular chemistry

摘要：Binding interactions of butyl viologen (BV+) with para-dicyclohexanocucurbit[6]uril (Cy2Q[6]) and α,α′,δ,δ′-tetramethyl cucurbit[6]uril (TMeQ[6]) were investigated by 1H NMR spectroscopy, isothermal titration calorimetry (ITC) and X-ray crystallography. In the solid state, the BV+ guest and both hosts form polymeric supramolecular crystals through multiple noncovalent interactions, including host-guest interaction, π-π stacking interaction, and metal-host coordination. In the aqueous solution, the butyl chain of BV+ was selectively encapsulated into the hosts Cy2Q[6] and TMeQ[6], while the bipyridinium group resides outside of the host portals, forming [2]pseudorotaxane. The ITC experiment indicates that the host-guest binding processes are exclusively enthalpy driven. ? The Partner Organisations.