Post-assembly Fabrication of a Functional Multicomponent Supramolecular Hydrogel Based on a Self-Sorting Double...

Area of Science:

• Materials Science
• Biomaterials Engineering
• Supramolecular Chemistry

Background:

• Living cells possess complex stimuli-responsive systems, a feature rare in artificial soft materials.
• Developing artificial materials with multiple, coordinated stimuli-responsive systems is a significant challenge.

Purpose of the Study:

• To create a multicomponent hydrogel with a dual-biomolecule response using a novel fabrication method.
• To demonstrate a hydrogel capable of AND logic gate behavior for specific biomolecule detection.
• To explore the application of this hydrogel in controlled antibody release.

Main Methods:

• Utilized a post-assembly fabrication (PAF) protocol to create a self-sorting double network hydrogel.
• Engineered the hydrogel to respond to adenosine triphosphate (ATP) and sarcosine.
• Investigated the gel-sol transition behavior in response to the presence of both biomolecules.

Main Results:

• Successfully synthesized a well-ordered multicomponent hydrogel not achievable through one-step mixing.
• Demonstrated that the hydrogel exhibits AND logic gate behavior, transitioning from gel to sol only when both ATP and sarcosine are present.
• Showcased the hydrogel's capability for controlled release of an antibody.

Conclusions:

• The PAF protocol enables the construction of sophisticated multicomponent hydrogels with precise control over stimuli-responsiveness.
• The developed dual-biomolecule responsive hydrogel offers a platform for advanced molecular logic systems.
• This biomolecule-responsive hydrogel has potential applications in targeted drug delivery and diagnostics.