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Catechol-functionalized hydrogels: biomimetic design, adhesion mechanism, and biomedical applications
Wei Zhang1, Ruixing Wang1, ZhengMing Sun1
1Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China. w69zhang@seu.edu.cn zmsun@seu.edu.cn.
Chemical Society Reviews
|January 16, 2020
Summary
Inspired by mussels, new catechol-functionalized hydrogels offer strong underwater adhesion for biomedical applications. These advanced materials overcome water
Area of Science:
- Materials Science
- Biomedical Engineering
- Polymer Chemistry
Background:
- Hydrogels are versatile polymeric materials with tunable properties like flexibility and biocompatibility.
- Achieving robust hydrogel adhesion, especially in wet environments, is crucial for biomedical device integration.
- Water significantly weakens traditional hydrogel adhesive interactions.
Purpose of the Study:
- To provide a comprehensive review of adhesive hydrogels.
- To explore strategies for overcoming underwater adhesion challenges.
- To highlight the potential of mussel-inspired catechol chemistry in hydrogel design.
Main Methods:
- Review of synthetic approaches for catechol-functionalized hydrogels.
- Discussion of fabrication techniques for creating adhesive hydrogel interfaces.
- Overview of characterization methods for assessing hydrogel adhesion and properties.
Main Results:
- Catechol-functionalization, inspired by mussel adhesive proteins, significantly enhances hydrogel adhesion.
- Developed hydrogels demonstrate robust bonding in wet conditions, addressing a key limitation.
- These materials exhibit potential across diverse applications including tissue repair and drug delivery.
Conclusions:
- Catechol-based hydrogels offer a promising solution for strong, water-resistant adhesion.
- Nature-inspired design principles are effective for creating advanced functional materials.
- Further development of these hydrogels can lead to improved biomedical devices and therapies.
