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Related Experiment Video

Updated: Jan 14, 2026

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Mechanochemically Induced Circularly Polarized Luminescence from Polymers.

Yuan Yu¹, Titi Xie², Junyu Li³

¹State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P.R. China.

Angewandte Chemie (International Ed. in English)

|October 20, 2025

Summary

Researchers developed mechanochemically induced circularly polarized luminescence (MICPL) in polymers. Mechanical force triggers polymer reactions, creating tunable, bright CPL signals for advanced optical materials.

Keywords:

Aggregation Circularly polarized luminescence Diels–Alder adducts Mechanochemical reaction Polymer mechanochemistry

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Area of Science:

Polymer Chemistry
Materials Science
Optics

Background:

Achieving diverse optical signals, especially polarized light, in polymer mechanochemistry is difficult.
Mechanochemically induced circularly polarized luminescence (MICPL) offers a novel approach to control light polarization through mechanical stimuli.

Purpose of the Study:

To pioneer the development of MICPL in polymers.
To design and synthesize crosslinked polymer networks capable of emitting CPL upon mechanical compression.
To explore the tunability of CPL properties by varying mechanophores and polymer matrices.

Main Methods:

Photopolymerization of achiral mechanophores with a chiral monomer (L(-)-bornyl acrylate, LBA).
Mechanical compression to trigger retro-Diels-Alder reactions, releasing fluorophores.
Analysis of force-dependent CPL emission and luminescence dissymmetry factor (g_lum).

Main Results:

Successful creation of polymers exhibiting bright, force-dependent CPL.
Achieved high luminescence dissymmetry factors (up to 10^-2).
Demonstrated tunable CPL colors (blue-violet to yellow-orange) and white CPL emission through system variation.

Conclusions:

Developed a versatile strategy for on-demand CPL materials using polymer mechanochemistry.
Established a platform for macromolecular chiral optical probes for multimodal stress reporting.
Resolved fundamental questions regarding mechanical force-regulated chirality in polymers.