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Reversible Circularly Polarized Luminescence Inversion and Emission Color Switching in Photo-Modulated Supramolecular

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Researchers created a new material that changes its light emission color and handedness when exposed to different lights. This dynamic control offers advanced possibilities for secure multimodal information encryption.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Organic Electronics

Background:

  • Developing advanced materials for information encryption is crucial.
  • Controlling circularly polarized luminescence (CPL) properties dynamically remains a challenge.

Purpose of the Study:

  • To engineer a pyridinethiazole acrylonitrile-cholesterol derivative (Z-PTC) for dynamic CPL and color modulation.
  • To explore its potential in multimodal information encryption.

Main Methods:

  • Synthesis of Z-PTC and its Ag+ supramolecular polymer (SP1).
  • Investigated photoisomerization and photocyclization under different light wavelengths (454 nm, 365 nm).
  • Analyzed morphological changes (nanotubes, nanospheres, aggregates) and CPL properties.

Main Results:

  • Z-PTC Ag supramolecular polymers (SP1) formed nanotubes with positive yellow-green CPL.
  • Light irradiation induced reversible handedness inversion and color changes (orange-yellow, blue).
  • Demonstrated dynamic control over CPL and morphology, including in a semisolid state.

Conclusions:

  • The developed Z-PTC system exhibits dynamic, reversible CPL handedness inversion and multicolor emission.
  • These properties are suitable for developing secure multimodal information encryption technologies.