Optically activated and interrogated plasmonic hydrogels for applications in wound healing

Area of Science:

• Biomaterials Science
• Nanotechnology
• Tissue Engineering

Background:

• Hybrid materials combine noble metals and polymers for advanced functionalities.
• Chitosan/polyvinyl alcohol scaffolds offer biocompatibility and porosity for tissue regeneration.
• Gold/silver nanostructures provide unique optical and antimicrobial properties.

Purpose of the Study:

• To develop and characterize hybrid Au/Ag core/shell nanorods within porous chitosan/polyvinyl alcohol scaffolds.
• To investigate the potential of these hybrid materials in tissue engineering and wound healing applications.
• To explore synergistic functionalities including optical activation, remote monitoring, and antimicrobial properties.

Main Methods:

• Fabrication of Au/Ag core/shell nanorods.
• Incorporation of nanorods into chitosan/polyvinyl alcohol scaffolds via electrospinning.
• Characterization of material properties (optical, structural, mechanical).
• Assessment of photothermal effects, antimicrobial activity, and oxidative stress sensing.

Main Results:

• Successful synthesis and integration of Au/Ag nanorods into porous scaffolds.
• Demonstrated optical tunability, photothermal stability, and enhanced shelf life.
• Evidence of germicidal silver cation release and colorimetric sensing of oxidative stress.
• Scaffolds showed potential for near-infrared laser tissue bonding and cellular support.

Conclusions:

• The developed hybrid material offers multifunctional capabilities for advanced wound healing.
• Synergistic effects of Au/Ag nanorods and polymer scaffolds enhance therapeutic potential.
• This platform holds promise for improved wound monitoring and regenerative therapies.