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Closed Mechanoelectrochemical Cycles of Individual Single‐Chain Macromolecular Motors by AFM
Author(s) -
Shi Weiqing,
Giannotti Marina I.,
Zhang Xi,
Hempenius Mark A.,
Schönherr Holger,
Vancso G. Julius
Publication year - 2007
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.200702387
Subject(s) - intramolecular force , chain (unit) , macromolecule , ferrocene , atomic force microscopy , single chain , molecular motor , chemistry , chemical physics , materials science , nanotechnology , biophysics , electrochemistry , stereochemistry , electrode , physics , biochemistry , astronomy , antibody , immunology , biology
Motor cycles : Mechanoelectrochemical loops of single‐chain macromolecular motors based on individual end‐grafted poly(ferrocenyldimethylsilane) are shown by AFM to have an efficiency of up to 26 %. Upon oxidation of a prestretched chain, the chain length increases and the force decreases significantly as a result of intramolecular electrostatic repulsion between oxidized ferrocene units (see picture).