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Multistimuli-Responsive, White-Light-Emitting Cyanostilbene-Cored Dendritic Gels.

Dan-Qing Fu1, Long-Jie Kong1, Ling Feng Wu1

  • 1School of Materials Science and Engineering, Changzhou University, Changzhou 213164, P. R. China.

Langmuir : the ACS Journal of Surfaces and Colloids
|May 6, 2026
PubMed
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Novel dendritic organogelators exhibit aggregation-induced emission enhancement (AIEE) and multistimuli responsiveness. These smart materials can form stable gels in various solvents and produce white light, showing promise for advanced applications.

Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Organic Chemistry

Background:

  • Multistimuli-responsive fluorescent gels are of significant interest due to their unique photophysical properties and potential applications.
  • Designing materials with aggregation-induced emission enhancement (AIEE) is crucial yet challenging for developing advanced fluorescent systems.

Purpose of the Study:

  • To design and synthesize novel poly(benzyl ether) dendritic organogelators with AIEE activity.
  • To investigate the gelation behavior, stimuli-responsive properties, and light-harvesting capabilities of these new materials.

Main Methods:

  • Synthesis of poly(benzyl ether) dendritic organogelators (CS-AB2-G1 and CS-AB3-G1) featuring a cyanostilbene core.
  • Characterization of organogel formation in various solvents, driven by intermolecular π-π stacking.

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  • Evaluation of stimuli-responsive behaviors (temperature, light, mechanical shear) and AIEE properties.
  • Construction and analysis of a supramolecular light-harvesting system using donor-acceptor coassembly.

    • Main Results:

    • The synthesized organogelators form stable gels in diverse solvents, exhibiting AIEE (weak fluorescence in solution, strong in gel state).
    • The gels demonstrate reversible gel-sol transitions in response to temperature, light, and mechanical shear.
    • A supramolecular system coassembled from CS-AB2-G1 and Nile red efficiently produced bright white light by tuning the donor-acceptor ratio.

    Conclusions:

    • Novel dendritic organogelators with AIEE and multistimuli responsiveness were successfully synthesized.
    • These materials offer solvent versatility, efficient energy transfer, and tunable light emission.
    • The developed multifunctional gels hold potential for applications in sensing, security inks, and stimuli-responsive devices.