Cucurbit[8]uril-based supramolecular hydrogels for biomedical applications

Area of Science:

• Supramolecular Chemistry
• Materials Science
• Biomedical Engineering

Background:

• Cucurbit[n]urils are macrocyclic hosts with large cavities capable of binding multiple guests.
• Cucurbit[8]uril (CB[8]) uniquely accommodates two guest molecules, enabling its use as a versatile crosslinker.
• Supramolecular hydrogels offer tunable properties and biocompatibility for diverse applications.

Purpose of the Study:

• To review the fabrication of supramolecular hydrogels using CB[8] as a dynamic crosslinker over the past decade.
• To discuss the design principles behind these CB[8]-based hydrogels.
• To highlight innovative biomedical applications and future prospects of these materials.

Main Methods:

• Dynamic noncovalent crosslinking of polymers using CB[8].
• Host-guest complexation driving supramolecular assembly.
• Fabrication of hydrogel networks via polymer-macrocycle interactions.

Main Results:

• CB[8] effectively crosslinks polymers to form stable yet dynamic supramolecular hydrogels.
• These hydrogels exhibit excellent biocompatibility, making them suitable for biomedical applications.
• A wide range of polymers can be utilized, allowing for tailored material properties.

Conclusions:

• CB[8]-based supramolecular hydrogels represent a promising class of materials for advanced biomedical applications.
• The dynamic nature and biocompatibility of these hydrogels are key advantages.
• Further research into design and application will unlock their full potential in medicine.