Near-infrared light triggerable deformation-free polysaccharide double network hydrogels

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Drug Delivery Systems

Background:

• Hydrogels are widely used in biomedical applications due to their biocompatibility and tunable properties.
• Developing hydrogels with controlled release capabilities and robust mechanical integrity remains a challenge.
• Stimuli-responsive materials offer potential for precise control over drug release kinetics.

Purpose of the Study:

• To synthesize and characterize a novel double network hydrogel with enhanced mechanical properties.
• To incorporate polypyrrole (PPy) nanoparticles for near-infrared (NIR) laser-triggered release.
• To evaluate the hydrogel's ability for programmable and remotely-controlled releasing.

Main Methods:

• Synthesis of an agarose/alginate double network hydrogel.
• Incorporation of polypyrrole (PPy) nanoparticles into the hydrogel matrix.
• Characterization of mechanical properties and morphology.
• Assessment of NIR laser-induced pulsatile releasing behavior.

Main Results:

• The synthesized hydrogel demonstrated robust mechanical properties.
• The incorporation of PPy nanoparticles enabled NIR laser responsiveness.
• Pulsatile releasing behaviors were observed upon laser switching.
• The hydrogel maintained its morphology and mechanical strength during the release process.

Conclusions:

• The developed agarose/alginate hydrogel with PPy nanoparticles is a promising material for controlled and programmable drug delivery.
• The NIR laser-responsive system allows for precise spatiotemporal control over drug release.
• This material holds potential for advanced therapeutic applications requiring remote activation.