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Fabrication of Hierarchically Structured Free-Standing Supramolecular Hydrogels through Flow-Driven
Lai Wei1, Yuliang Gao1, Zhongqi Li1
1School of Chemical Engineering, East China University of Science and Technology, Shanghai, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|January 17, 2026
Summary
Researchers developed a flow-driven method to create structured supramolecular hydrogels. This technique allows precise control over hydrogel fiber alignment and macroscopic structure for advanced soft materials.
Area of Science:
- Soft Matter Science
- Materials Chemistry
- Supramolecular Chemistry
Background:
- Supramolecular hydrogels are vital soft materials assembled from small molecules.
- Structuring these hydrogels across multiple length scales is crucial but challenging.
- Existing methods lack control over hierarchical organization.
Purpose of the Study:
- To develop a novel fabrication method for hierarchically structured supramolecular hydrogels.
- To demonstrate control over fiber alignment and macroscopic hydrogel architecture.
- To enable the creation of complex hydrogel structures like tubes and multilayers.
Main Methods:
- A flow-driven reaction-diffusion system utilizing an agarose channel.
- Proton diffusion from the channel triggers self-assembly of acid-sensitive gelators.
- Adjusting proton concentration controls hydrogel fiber growth direction.
- Sequential assembly allows for multilayered hydrogel fabrication.
Main Results:
- Fabrication of free-standing supramolecular hydrogel tubes with aligned fibers.
- Demonstrated control over hydrogel fiber orientation via diffusion gradients.
- Successfully created multilayered hydrogel tubes with distinct layers.
- Achieved tunable cross-sectional shapes of the hydrogel tubes.
Conclusions:
- The flow-driven reaction-diffusion approach offers a simple yet powerful tool for hydrogel structuring.
- This method enables hierarchical control from fiber level to macroscopic architecture.
- The technique opens avenues for new applications of functional supramolecular hydrogels.
Keywords:
directed self‐assemblyhydrogelsmolecular gelatorsreaction‐diffusionsupramolecular chemistryMore Related Videos
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