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Updated: Feb 6, 2026

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
Switching of the solid-state guest selectivity: solvent-dependent selective guest inclusion in a crystalline
Suguru Ito1, Kosuke Ono1, Kohei Johmoto2
1Department of Chemistry , Tokyo Institute of Technology and JST-CREST , 2-12-1, O-okayama , Meguro-ku , Tokyo 152-8551 , Japan .
Abstract:
Selective inclusion of each of bicyclic and tricyclic aromatic guest molecules was realized utilizing the self-assembly of a crystalline benzothiadiazole-type macrocyclic boronic ester. The complete switching of the guest selectivity was achieved simply by changing the cosolvent used in the formation of the crystalline host-guest complexes. Both the association free energy of host-guest complexes and the stability of packing structure were found to play important roles for the determination of the guest selectivity in this system, and the critical role of solvent molecules in the crystalline state for the switching phenomena was clarified.
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