A Double-Walled Knotted Cage for Guest-Adaptive Molecular Recognition
journal contributionposted on 12.03.2020, 15:35 by Yukari Tamura, Hiroki Takezawa, Makoto Fujita
We synthesized a double-walled knotted cage from a flexible tripodal ligand. The characteristic double-walled structure provided a unique adaptive behavior of the cavity upon inclusion of organic molecules, which was evidenced by NMR and X-ray measurements. The semiflexible host framework, restricted by the knotted topology, enabled kinetic molecular recognition revealing the sequential binding of two different guests from their mixture.