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Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

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Light-activated photodeformable supramolecular dissipative self-assemblies.

Xu-Man Chen¹, Wei-Jie Feng¹, Hari Krishna Bisoyi²

¹Institute of Advanced Materials, School of Chemistry and Chemical Engineering, and Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing, 211189, China.

Nature Communications

|June 10, 2022

Summary

This summary is machine-generated.

Researchers developed a light-activated system for dissipative self-assembly, creating nanoparticles that change shape and fluorescence. This controllable platform allows for dynamic, multicolored fluorescent displays with potential applications in responsive materials.

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Area of Science:

Materials Science
Supramolecular Chemistry
Photochemistry

Background:

Dissipative self-assembly is crucial for out-of-equilibrium systems, enabling temporal processes.
Controlling non-photoresponsive properties via light-fueled structures with transformable morphology is challenging.

Purpose of the Study:

To develop a light-activated, photodeformable dissipative self-assembly system.
To create a metastable fluorescent palette with transformable nanoparticles.

Main Methods:

Utilized zwitterionic sulfonato-merocyanine as a light-induced amphiphile.
Co-assembled amphiphiles with polyethyleneimine upon light irradiation.
Investigated reversible interconversion between spherical and cuboid nanoparticles via light and thermal relaxation.

Main Results:

Achieved light-activated, transformable nanoparticles in aqueous solution.
Demonstrated spontaneous shape transformation (spherical to cuboid) and size variation in the dark.
Observed reversible shape interconversion triggered by light and heat.
Engineered nanoparticles with time-dependent fluorescence and a wide color range by loading various fluorophores.
Achieved a 358-fold enhancement in light-controlled fluorescence.

Conclusions:

The photodeformable dissipative assembly platform enables light-controlled fluorescence modulation.
Spatially controlled light exposure allows for the creation of multicolor fluorescent images that fade over time.
This system offers a novel approach for dynamic and responsive fluorescent materials.