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An Acid–Base‐Controllable [c2]Daisy Chain
Author(s) -
Wu Jishan,
Leung Ken ChamFai,
Benítez Diego,
Han JaYoung,
Cantrill Stuart J.,
Fang Lei,
Stoddart J. Fraser
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200803036
Subject(s) - janus , rotaxane , bistability , crown ether , base (topology) , chain (unit) , computer science , chemistry , nanotechnology , engineering drawing , polymer science , materials science , molecule , physics , engineering , mathematics , optoelectronics , supramolecular chemistry , organic chemistry , ion , mathematical analysis , astronomy
The long and the short of it : A bistable molecular muscle, based on a doubly threaded Janus‐type [2]rotaxane, is assembled using a template‐directed self‐assembly process. Under the influence of changes in the pH value, the two identical matching components glide along one another through terminal crown ether moieties, bringing about expansion and contraction of the molecule.