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Designing a Helical Polymer that Reverses its Handedness at a Selected, Continuously Variable, Temperature
Author(s) -
Cheon Kap Soo,
Selinger Jonathan V.,
Green Mark M.
Publication year - 2000
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/(sici)1521-3773(20000417)39:8<1482::aid-anie1482>3.0.co;2-7
Subject(s) - sign (mathematics) , enantiomer , sense (electronics) , polymer , competitor analysis , variable (mathematics) , materials science , physics , mathematics , chemistry , thermodynamics , nuclear magnetic resonance , mathematical analysis , stereochemistry , management , economics
In a struggle between unmatched enantiomers to control the helical sense of a polymer, temperature determines the ratio of the chiral competitors at which the right‐ and left‐handed helical senses are equally populated. Deviation above or below this temperature is detected by the optical activity, which then increases with the opposite sign. This phenomenon, potentially applicable to other helical arrays, is analyzed by a statistical physical model, which allows quantitative understanding of the controlling parameters.