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Media type:
E-Article
Title:
A Helicate‐Based Three‐State Molecular Switch
Contributor:
Chen, Xiaofei;
Gerger, Thomas M.;
Räuber, Christoph;
Raabe, Gerhard;
Göb, Christian;
Oppel, Iris M.;
Albrecht, Markus
imprint:
Wiley, 2018
Published in:Angewandte Chemie International Edition
Language:
English
DOI:
10.1002/anie.201806607
ISSN:
1433-7851;
1521-3773
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title><jats:p>The control of structural transformations triggered by external signals is important for the development of novel functional devices. In the present study, it is demonstrated that helicates can be designed to structurally respond to the presence of different counterions and to adopt either a compressed or an expanded structure. Reversible switching is not only possible between those two states, furthermore, the twist of the aggregate also can be controlled. Thus, three out of four possible states of a helicate (expanded/left‐handed, expanded/right‐handed, compressed/left‐handed) based on an enantiomerically pure ester bridged dicatecholate ligand are specifically addressed by introduction, exchange, or removal of countercations. This approach is used to reversibly switch between the different states or to successively address them.</jats:p>