Molecular motion of donor–acceptor catenanes in water†
In this article, we use 1H NMR spectroscopy to study the spontaneous molecular motion of donor–acceptor catenanes in water. Our data supports the hypothesis that conformational motion dominantly occurs through a pirouetting mechanism, which involves less exposure of hydrophobic surfaces than in a rotation mechanism. Motion is controlled by the size of the catenane rings and the arrangement of the electron-deficient and electron-rich aromatic units.
- This article is part of the themed collection: Supramolecular Chemistry in Water