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Dehydration Synthesis

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

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Free-standing supramolecular hydrogel objects by reaction-diffusion.

Matija Lovrak¹, Wouter E J Hendriksen¹, Chandan Maity¹

¹Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands.

Nature Communications

|June 6, 2017

Summary

This summary is machine-generated.

Researchers coupled reaction-diffusion with molecular self-assembly to create free-standing hydrogel objects. This method allows precise control over shape, size, and functionality for programmed fabrication.

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Area of Science:

Materials Science
Chemical Engineering
Soft Matter Physics

Background:

Molecular self-assembly enables diverse material creation but lacks spatial control.
Achieving precise control over the shape, size, and functionality of self-assembled structures remains a significant challenge.

Purpose of the Study:

To develop a method for controlled fabrication of macroscopic, free-standing objects using molecular self-assembly.
To demonstrate the integration of reaction-diffusion (RD) principles with self-assembly for programmed material generation.

Main Methods:

Coupling reaction-diffusion (RD) with molecular self-assembly processes.
Utilizing hydrazone molecular gelators and their non-assembling precursors.
Employing diffusion of reactants to control local reaction and self-assembly.

Main Results:

Successfully generated free-standing hydrogel objects with controlled shape and size (micrometers to centimeters).
Demonstrated local control over the formation and self-assembly of molecular gelators.
Integrated diverse chemical functionalities and gradients by varying reactants.

Conclusions:

The developed methodology provides a general approach for programmed fabrication of soft microscale objects.
This technique offers precise control over shape, size, and functionality in self-assembled materials.
The combination of RD and self-assembly opens new avenues for creating functional soft materials.