Multiple noncovalent interaction constructed polymeric supramolecular crystals: recognition of butyl viologen by para-dicyclohexanocucurbit[6]uril and α,α′,δ,δ′-tetramethylcucurbit[6]uril
文献信息
发布日期
2017-09-05
DOI
10.1039/C7QO00708F
影响因子
5.281
作者
Zhi-You Xiao, Rui-Lian Lin, Zhu Tao, Qing-Yun Liu, Jing-Xin Liu, Xin Xiao
查看原文
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.
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来源期刊
Organic Chemistry Frontiers
CiteScore:
7.8
自引率:
8.7%
年发文量:
724
Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry
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