Self-assembled capsules based on tetrafunctionalized calix[4]resorcinarene cavitands.

Area of Science:

• Supramolecular Chemistry
• Organic Chemistry

Background:

• Calix[4]resorcinarene derivatives are versatile scaffolds for creating molecular capsules.
• Two main categories exist based on functionalization at the upper rim: bridged and methylene-bridge derivatives.

Purpose of the Study:

• This review focuses on self-assembled capsules formed by methylene-bridge cavitands.
• It explores the assembly mechanisms and structural features of these specific cavitands.

Main Methods:

• The review synthesizes information on methylene-bridge cavitands.
• It discusses the non-covalent and dynamic covalent interactions driving capsule formation.

Main Results:

• Methylene-bridge cavitands self-assemble into well-defined capsular structures.
• Assembly is achieved through predictable intermolecular forces like hydrogen bonding and metal coordination.

Conclusions:

• Methylene-bridge cavitands offer a tunable platform for designing self-assembled supramolecular capsules.
• The review highlights their potential in host-guest chemistry and materials science.