Polyphenol-driving assembly for constructing chitin-polyphenol-metal hydrogel as wound dressing

Area of Science:

• Materials Science
• Biomedical Engineering
• Polymer Chemistry

Background:

• Metal-polyphenol networks offer unique properties for biomedical uses.
• Fabricating homogeneous metal-polyphenol hydrogels is challenging due to aggregation.

Purpose of the Study:

• To develop a facile and low-cost strategy for fabricating homogeneous chitin-polyphenol-metal hydrogels.
• To explore the potential of these hydrogels in biomedical applications, such as wound repair.

Main Methods:

• A polyphenol-mediating non-covalent driven assembly strategy was employed.
• Polyphenols were used to crosslink chitin chains and capture metal nanomaterials.
• Diverse metals (Fe, Cu, Ti, Zn) and polyphenols (tannic acid, gallic acid, quercetin, pyrogallic acid) were incorporated.

Main Results:

• Homogeneous chitin-polyphenol-metal hydrogels were successfully fabricated.
• The chitin-tannic acid-Cu hydrogel exhibited excellent antibacterial properties.
• This hydrogel significantly enhanced infected wound repair by promoting cell proliferation and angiogenesis.

Conclusions:

• The developed strategy offers a versatile and flexible approach to create various polymer-polyphenol-metal hydrogels.
• These hydrogels show significant potential for applications in wound dressing and other biomedical fields.