A stimuli responsive two component supramolecular hydrogelator with aggregation-induced emission properties
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Updated: Jan 19, 2026

Four-Dimensional Printing of Stimuli-Responsive Hydrogel-Based Soft Robots
Published on: January 13, 2023
Dennis Aschmann1, Steffen Riebe, Thorben Neumann
1Institute of Organic Chemistry, University of Duisburg-Essen, Universitätsstrasse 7, 45117 Essen, Germany. jens.voskuhl@uni-due.de carsten.schmuck@uni-due.de.
Abstract:
In this contribution we describe a novel hydrogelator based on four guadiniumcarbonylpyrrole units in combination with aggregation-induced emission active aromatic thioethers which undergo self-assembly into fibrills in aqueous media as visible in AFM and TEM measurements. These fibrills are weakly luminescent and unable to induce gelation. Upon addition of malonic acid a cross-linking of the single fibres was detected leading to the formation of a highly emissive stable hydrogel. This gel responds to several external stimuli such as heat, shaking as well as pH changes.
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