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A [2]Pseudorotaxane‐Based Molecular Machine: Reversible Formation of a Molecular Loop Driven by Electrochemical and Photochemical Stimuli
Author(s) -
Jeon Woo Sung,
Ziganshina Albina Y.,
Lee Jae Wook,
Ko Young Ho,
Kang JinKoo,
Lee Chongmok,
Kim Kimoon
Publication year - 2003
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.200351925
Subject(s) - schematic , thread (computing) , intramolecular force , chemistry , electrochemistry , viologen , molecular machine , computer science , photochemistry , nanotechnology , materials science , stereochemistry , electrode , electronic engineering , engineering , operating system
Picking up the thread : A large, reversible change in size as well as shape is observed in a [2]pseudorotaxane‐based molecular machine composed of cucurbit[8]uril (CB[8]; bead) and a hexamethylene‐bridged bisviologen (thread, see schematic representation) on application of external stimuli. The key feature of the machinelike behavior is the reversible formation of a molecular loop by intramolecular pairing of the terminal viologen radical cation units inside CB[8] upon electrochemical or photochemical reduction.