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Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

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Dissipative Acid-Fueled Reprogrammable Supramolecular Materials.

Enzo Olivieri¹, Baptiste Gasch¹, Guilhem Quintard²

¹Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France.

ACS Applied Materials & Interfaces

|May 17, 2022

Summary

This summary is machine-generated.

Researchers developed novel time-controlled smart materials using trichloroacetic acid (TCA) as fuel. These materials reversibly switch between gel and solution states, enabling applications like remoldable objects and erasing ink.

Keywords:

chirality dissipative assembly organogel smart material supramolecular

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Area of Science:

Materials Science
Supramolecular Chemistry

Background:

Smart materials offer dynamic property changes in response to stimuli.
Reversible gel-sol-gel transitions are crucial for advanced material applications.

Purpose of the Study:

To introduce trichloroacetic acid (TCA) as a fuel for creating novel time-controlled smart materials.
To explore the reversible gel-sol-gel transition mechanism using TCA and amine organogelators.

Main Methods:

Utilizing neutral amines as organogelators.
Inducing gel-to-solution transition via TCA addition and amine protonation.
Achieving solution-to-gel recovery through time-dependent TCA decarboxylation.

Main Results:

Demonstrated reversible gel-sol-gel switching in materials triggered by TCA.
Showcased time-dependent property changes enabling controlled material states.
Confirmed TCA decarboxylation as the mechanism for gel state recovery.

Conclusions:

Developed innovative time-controlled materials with reversible gel-sol-gel behavior.
Highlighted the potential of TCA as a fuel for dynamic material systems.
Identified applications in remoldable objects, erasing ink, chiroptical switches, and electrical systems.