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Scientific article
English

Untying the Photophysics of Quinolinium‐Based Molecular Knots and Links

Published inChemistry - A European Journal, vol. 26, no. 7, p. 1576-1587
Publication date2020
Abstract

Complex molecular knots and links are still difficult to synthesize and the properties arising from their topology are mostly unknown. Here, we report on a comparative photophysical study carried out on a family of closely related quinolinium‐based knots and links to determine the impact exerted by topology on the molecular backbone. Our results indicate that topology has a negligible influence on the behavior of loosely braided molecules, which mostly behave like their unbraided equivalents. On the other hand, tightly braided molecules display distinct features. Their higher packing density results in a pronounced ability to resist deformation, a significant reduction in the solvent‐accessible surface area and favors close‐range π–π interactions between the quinolinium units and neighboring aromatics. Finally, the sharp alteration in behavior between loosely and tightly braided molecules sheds light on the factors contributing to braiding tightness.

Keywords
  • Anion recognition
  • Conformational switch
  • Molecular topology
  • Photophysics
  • Supramolecular chemistry
Research group
Citation (ISO format)
CAPRICE, Kenji et al. Untying the Photophysics of Quinolinium‐Based Molecular Knots and Links. In: Chemistry - A European Journal, 2020, vol. 26, n° 7, p. 1576–1587. doi: 10.1002/chem.201904456
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Identifiers
ISSN of the journal0947-6539
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Technical informations

Creation01/28/2020 10:14:00 AM
First validation01/28/2020 10:14:00 AM
Update time03/15/2023 6:50:06 PM
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