Multifunctional hydrogel patch for wearable colorimetric sensing and oral ulcer therapy

Area of Science:

• Biomedical Engineering
• Materials Science
• Nanotechnology

Background:

• Traditional hydrogels offer limited functionality, hindering their use in comprehensive health monitoring.
• Developing multifunctional hydrogels is crucial for advancing biomedical applications.

Purpose of the Study:

• To create a multifunctional hydrogel patch for simultaneous colorimetric detection and oral ulcer therapy.
• To leverage the properties of gold nanostars for enhanced hydrogel performance.

Main Methods:

• Incorporating gold nanostars into a polyacrylamide (PAAm) hydrogel matrix.
• Utilizing the localized surface plasmon resonance (LSPR) of gold nanostars for iodide detection.
• Exploiting the photothermal effect of gold nanostars for antibacterial therapy.

Main Results:

• The developed PAAm/Au hydrogel patch demonstrated effective colorimetric detection of iodide.
• Gold nanostars improved the mechanical properties and conductivity of the hydrogel.
• The hydrogel exhibited efficient photothermal antibacterial activity for oral ulcer treatment.

Conclusions:

• Multifunctional hydrogels incorporating nanomaterials offer a promising platform for integrated healthcare solutions.
• This PAAm/Au hydrogel patch provides a novel approach for diagnostics and therapeutics.
• The strategy of using functional nanomaterials in hydrogels opens new avenues for multifunctional biomedical devices.