Revisiting the Formation and Tunable Dissociation of a [2]pseudorotaxane Formed by Slippage Approach

Overview

Journal Int J Mol Sci

Publisher MDPI

Specialties Biochemistry
Chemistry
Molecular Biology

Date 2015 Apr 15

PMID 25872145

Citations 2

Authors

Ken Cham-Fai Leung

Kwun-Ngai Lau

Wing-Yan Wong

Affiliations

Soon will be listed here.

Abstract

A new [2]pseudorotaxane DB24C8⊃1-H · PF6 with dibenzo[24]crown-8 (DB24C8) crown ether-dibenzylammonium (1-H · PF6) binding which was formed by slippage approach at different solvents and temperature, had been isolated and characterized by NMR spectroscopy and mass spectrometry. The [2]pseudorotaxane DB24C8⊃1-H · PF6 was stable at room temperature. The dissociation rate of [2]pseudorotaxane DB24C8⊃1-H · PF6 could be tuned by using different stimuli such as triethylamine (TEA)/diisopropylethylamine (DIPEA) and dimethyl sulfoxide (DMSO). In particular, the dissociation of [2]pseudorotaxane DB24C8⊃1-H · PF6 by an excess of TEA/DIPEA base mixture possessed a long and sustained, complete dissociation over 60 days. Other stimuli by DMSO possessed a relatively fast dissociation over 24 h.

Citing Articles

π-Stacking Stopper-Macrocycle Stabilized Dynamically Interlocked [2]Rotaxanes.

Chan S, Tang F, Lam C, Kwan C, Hau S, Leung K Molecules. 2021; 26(15).

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A Versatile Axle for the Construction of Disassemblage Rotaxanes.

Powers L, Smithrud D Molecules. 2016; 21(8).

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