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Harnessing Reversible 0D-1D Transformation in Chiral Mn(II) Halides for Smart Circularly Polarized Luminescence
Jinyang Li1, Kele Liao1, Qinghong Zeng1
1Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
Angewandte Chemie (International Ed. in English)
|January 22, 2026
Summary
Researchers developed new chiral hybrid Mn(II) halide materials that exhibit tunable circularly polarized luminescence (CPL). These materials can switch CPL color from green to red in response to stimuli, enabling advanced photonic encryption.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Photonics
Background:
- Dynamically tunable circularly polarized luminescence (CPL) materials are crucial for advanced photonics and encryption.
- Achieving predictable solid-state structural transformations for CPL tuning remains challenging.
Purpose of the Study:
- To demonstrate a dimensionality-engineering strategy for stimuli-responsive CPL in chiral hybrid Mn(II) halides.
- To develop a multilevel photonic encryption platform based on CPL properties.
Main Methods:
- Selective synthesis of distinct 1D and 0D phases using a chiral cation (R/S-3-methylmorpholine).
- Investigated ethanol-assisted thermal transformation between the 0D and 1D phases.
- Engineered a multilevel photonic encryption platform utilizing CPL switching.
Main Results:
- Synthesized red-emissive 1D and green-emissive 0D chiral hybrid Mn(II) halide phases.
- Observed a rapid, reversible transformation of the 0D phase to the 1D phase upon ethanol-induced thermal stimulus.
- Demonstrated a distinct CPL color switch from green to red during the phase transformation.
- Successfully implemented a sophisticated multilevel photonic encryption system.
Conclusions:
- Structural dimensionality control is a powerful strategy for designing intelligent, CPL-active materials.
- The reversible, stimulus-responsive CPL behavior opens new possibilities for high-security optical information technologies.
- This work advances the development of advanced materials for secure data encoding and optical communication.
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