Supramolecular Multiple Stimuli-Responsive Conductive Hydrogel for Flexible Sensing.

Area of Science:

• Materials Science
• Polymer Chemistry
• Biomedical Engineering

Background:

• Self-healing conductive hydrogels are crucial for advanced biomedical and electronic applications.
• There is a significant demand for hydrogels with tunable mechanical properties, stimuli-responsiveness, and adhesion for wearable sensors.

Purpose of the Study:

• To design and prepare a novel supramolecular conductive hydrogel.
• To investigate its potential as a multifunctional flexible sensor for wearable electronics.

Main Methods:

• Free radical polymerization incorporating acryloyl-β-cyclodextrin (AC-β-CD), acryloyl-1-adamantanamine (AC-AD), N-isopropylacrylamide (NIPAM), and reduced graphene oxide/β-CD (rGO-CD).
• Comprehensive characterization of chemical structure, conductivity, swelling behavior, photothermal properties, mechanical and adhesive performance, injectability, and self-healing capabilities.

Main Results:

• The synthesized hydrogel demonstrated excellent self-healing, conductivity, and stimuli-responsive properties.
• The hydrogel exhibited tunable mechanical characteristics, adhesion, and injectability.
• Successful human motion detection and positive cytocompatibility were observed, highlighting its suitability for wearable applications.

Conclusions:

• The developed supramolecular conductive hydrogel shows great promise for creating multifunctional flexible sensors.
• This work offers a new avenue for the development of advanced wearable electronic devices.