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Complexation of a pentiptycene-derived trans-bis(crown ether) host with different terminally functionalized paraquat
Ying-Xian Ma1, Ying Han, Jing Cao
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. cchen@iccas.ac.cn.
Abstract:
The complexation behaviour of a pentiptycene-derived bis(crown ether), containing two 24-crown-8 moieties in a trans arrangement, and a series of paraquat derivatives with different terminal functional groups was investigated. It was found that all of the paraquat derivatives could form stable 2 : 1 complexes with the pentiptycene-derived host both in solution and the solid state, where multiple non-covalent interactions between the host and the guests played an important role. Moreover, the binding and release of the guests in the complexes could also be efficiently controlled by the removal and addition of potassium ions.
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