期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 67, 期 26, 页码 9175-9181出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo020373d
关键词
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A chemically addressable, bistable [2]rotaxane, which incorporates a dumbbell-shaped component containing both secondary dialkylammonium and 1,2-bis(pyridinium)ethane recognition sites for its ring component, dibenzo[24]crown-8 (DB24C8), has been assembled. H-1 NMR spectroscopy has demonstrated that deprotonation (and reprotonation) of the secondary dialkylammonium (dialkylamine) recognition site induces the DB24C8 ring to move away from this site to the 1,2-bis(pyridinium)ethane one (and back again) in a discrete manner, particularly when the experiment is performed in CDCl3 solution.
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