Published in
Wiley, Angewandte Chemie International Edition, 49(50), p. 11692-11696, 2011
Wiley, Angewandte Chemie, 49(123), p. 11896-11900, 2011
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Chiral Amplification and Helical-Sense Tuning by Mono- and Divalent Metals on Dynamic Helical Polymers
,
José Manuel Seco,
Emilio Quiñoá,
Ricardo Riguera
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Abstract
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.