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Chiral Amplification and Helical‐Sense Tuning by Mono‐ and Divalent Metals on Dynamic Helical Polymers
Author(s) -
Freire Félix,
Seco José Manuel,
Quiñoá Emilio,
Riguera Ricardo
Publication year - 2011
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.201105769
Subject(s) - phenylacetylene , divalent , valence (chemistry) , sense (electronics) , polymer , metal , helix (gastropod) , chemistry , circular dichroism , materials science , crystallography , stereochemistry , organic chemistry , ecology , snail , biology , catalysis
Ion sensor : A highly dynamic poly(phenylacetylene) bearing α‐methoxyphenylacetic acid (MPA) as chiral pendant exhibits selective helix induction and chiral amplification, and gives a material that acts as a sensor for the valence of metal cations. Selective coordination of the pendants with mono‐ or divalent metal cations determines the right‐ or left‐handed helical sense of the polymer (see picture) and its chiroptical response.