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 alpha,alpha ',delta,delta '-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, JX[1];Xiao, X[2]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Anhui Univ Technol, Coll Chem & Chem Engn, Maanshan 243002, Peoples R China;[3]Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao, Peoples R China;[4]Guizhou Univ, Key Lab Macrocycl & Supramol Chem Guizhou Prov, Guiyang 550025, Guizhou, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Anhui Univ Technol, Coll Chem & Chem Engn, Maanshan 243002, Peoples R China;corresponding author), Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao, Peoples R China.

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：;WOS:【SCI-EXPANDED(收录号:WOS:000416065700022)】；

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

摘要：Binding interactions of butyl viologen (BV+) with para-dicyclohexanocucurbit[6]uril (Cy2Q[6]) and alpha,alpha',delta,delta'-tetramethyl cucurbit[6]uril (TMeQ[6]) were investigated by H-1 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, pi-pi 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.