Supramolecular assemblies constructed from inverted cucurbit[7]uril and lanthanide cations : synthesis, structure and sorption properties

Li, Qing; Qiu, Sheng-Chao; Zhang, Yun-Qian; Xue, Sai-Feng; Tao, Zhu (Chemist); Prior, Timothy J.; Redshaw, Carl; Xiao, Xin; Zhu, Qian-Jiang

Department of Chemistry; Department of Chemistry
Chemistry
2016

Journal article


Rights
©2017 University of Hull
Abstract

The interaction of a series of lanthanide cations (Ln³⁺) with inverted cucurbit[7]uril (iQ[7]) in the presence of [ZnCl₄]²⁻ anions as a structure-directing agent have been investigated. Single-crystal X-ray diffraction analysis has revealed that the [ZnCl₄]²⁻ anions surround the iQ[7] molecules via outer surface interactions of iQ[7]. This results in the formation of honeycomb-like frameworks, and ultimately linear supramolecular chains of iQ[7] in which Ln³⁺ cations occupy voids within the framework. Moreover, these iQ[7]/Ln³⁺-based supramolecular assemblies exhibit excellent thermal stability as well as permanent porosity, and in one case screening revealed high CH₃OH uptake capacity compared with other porous organic materials assembled solely through hydrogen bonding under ambient conditions.

Publisher
The University of Hull
Peer reviewed
Yes
Language
English
Identifier
hull:13662

Journal

Journal title
RSC advances
Publication date
2016
Publisher
Royal Society of Chemistry
DOI
10.1039/C6RA15559F
ISSN (Electronic)
2046-2069
Issue
6
Start page
77805
End page
77810
Notes

Authors' accepted manuscript of article published in: RSC advances, 2016, issue 6

Link
Published article
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