Structural alteration of the hybrid supermolecule capsule by the guest molecule encapsulation

Abstract

Cavitand has four modifiable sites on the aromatic rings. We designed and synthesized C_2V synmmetrical cavitand substituted benzamide groups as hydorogen bonding sites and pyridylethynyl groups as coordination bonding sites. The cavitand formed a hybrid supramolecular capsule in the presence of metal complex. The capsule could encapsulate sizable guest molecules accompanying structural alteration.