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October 10, 2025ChemPhotoChem0 citationsOpen Access

Sign Inversion of Chiral Polymer Film Response via Thickness and Annealing Conditions

Unexpected Sign Inversion of the Circular Dichroism and Circularly Polarized Luminescence Response of Chiral Copolymer Thin Films by Tuning the Thickness and Annealing Conditions

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Authors

DGDomenic GustUniversity of SiegenMMMarius MorgenrothUniversity of SiegenMSMirko ScholzInfineon Technologies (Germany)

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Overview

Investigation reveals that circular dichroism and luminescence responses change with film thickness and temperature, suggesting new applications.

Key Points

  • Chiral copolymer thin films exhibit an unexpected sign inversion in their chiroptical properties.
  • Circular dichroism values reach up to 16,000 mdeg, while the dissymmetry parameter tops at 0.7.
  • Structural changes within the chiral supramolecular phase contribute to the observed optical response.
  • Measurements highlight the significance of detection angle to avoid distortions in the circularly polarized luminescence signal.

Cite This Study

Gust et al. (2025) studied this question.

synapsesocial.com/papers/68e861907ef2f04ca37e3e8chttps://doi.org/10.1002/cptc.202500196
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Also Consider

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  3. 3Amplified Circularly Polarized Luminescence Behavior in Chiral Co-assembled Liquid Crystal Polymer Films via the Strategic Manipulation of Chiral Inducers2024 · 8 citations
  4. 4Conformation‐Driven Circularly Polarized Luminescence Sign Inversion in Chiral Bispyrene Based Cocrystals with Optical Waveguide2025
  5. 5Conformation‐Driven Circularly Polarized Luminescence Sign Inversion in Chiral Bispyrene Based Cocrystals with Optical Waveguide2025