Molecular Shuttling of a Compact and Rigid H-Shaped [2]Rotaxane

Push‐button control: A new templating motif for mechanically interlocked molecules involving benzimidazolium axles and dibenzo[24]crown‐8 wheels was used to create [2]rotaxane molecular shuttles with a compact and rigid, H‐shaped molecular structure for condensed‐phase and solid‐state applications....

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2012-02, Vol.51 (9), p.2168-2172
Main Authors: Zhu, Kelong, Vukotic, V. Nicholas, Loeb, Stephen J.
Format: Article
Language:English
Subjects:
Axles
Condensing
Lithium ions
molecular shuttle
Molecular structure
pseudorotaxane
rotaxane
supramolecular chemistry
Wheels
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Summary:Push‐button control: A new templating motif for mechanically interlocked molecules involving benzimidazolium axles and dibenzo[24]crown‐8 wheels was used to create [2]rotaxane molecular shuttles with a compact and rigid, H‐shaped molecular structure for condensed‐phase and solid‐state applications. Four different states of the molecular shuttle were shown to exhibit different rates of motion controlled by acid–base chemistry or the presence/absence of lithium ions (see scheme).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201108488