Stable encapsulation of acrylate esters in networked molecular capsules

Area of Science:

• Materials Science
• Supramolecular Chemistry
• Polymer Science

Background:

• Networked molecular capsules offer unique environments for guest molecule confinement.
• Controlling polymerization of reactive monomers is crucial for material development.
• Single-crystal-to-single-crystal transformations allow for precise structural control.

Purpose of the Study:

• To investigate the encapsulation of reactive acrylate esters within networked molecular capsules.
• To evaluate the effect of encapsulation on the polymerization behavior of acrylates.
• To develop a method for controlled release of acrylate monomers.

Main Methods:

• Synthesis of networked molecular capsules.
• Encapsulation of reactive acrylate esters via single-crystal-to-single-crystal method.
• Exposure of encapsulated acrylates to UV light and heat to test polymerization.
• Extraction of guest acrylate molecules using toluene treatment.

Main Results:

• Reactive acrylate esters were successfully encapsulated within the molecular capsule cavities.
• Encapsulation effectively inhibited polymerization of acrylates under UV irradiation and heating.
• Quantitative extraction of acrylate esters was achieved by treatment with toluene.

Conclusions:

• Networked molecular capsules provide a protective environment, preventing premature polymerization of reactive acrylates.
• This encapsulation strategy offers a novel approach for the storage and controlled release of monomers.
• The findings have implications for developing advanced materials and controlled polymerization techniques.