Twist Sense Bias Induced by Chiral Side Chains in Helically Folded Oligomers

Twist Sense Bias Induced by Chiral Side Chains in Helically Folded Oligomers

Cooperative interactions among the side chains of the helically folded phenylene‐ethynylene oligomer shown (n=2, 4, 6, 8, 10, 12, 14, 16, 18) can induce a twist sense bias. Therefore, the side chains can play more than just an ancillary role in these conformationally ordered oligomers. The onset of...

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Veröffentlicht in:Angewandte Chemie International Edition 2000-01, Vol.39 (1), p.228-230
Hauptverfasser: Prince, Ryan B., Brunsveld, Luc, Meijer, E. W., Moore, Jeffrey S.
Format: Artikel
Sprache:eng
Schlagworte:
circular dichroism
cooperative effects
oligomers
solvent effects
supramolecular chemistry
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Zusammenfassung:Cooperative interactions among the side chains of the helically folded phenylene‐ethynylene oligomer shown (n=2, 4, 6, 8, 10, 12, 14, 16, 18) can induce a twist sense bias. Therefore, the side chains can play more than just an ancillary role in these conformationally ordered oligomers. The onset of the twist sense bias lags significantly behind the appearance of helical conformations, possibly because a large ensemble of “collapsed” conformations is initially formed.
ISSN:1433-7851
1521-3773
DOI:10.1002/(SICI)1521-3773(20000103)39:1<228::AID-ANIE228>3.0.CO;2-B