Achieving Dynamic Circularly Polarized Luminescence with 2D Hydrogen-Bonded Organic Frameworks
Li Meng1,2, Dian-Xue Ma1,3, Zhong-Qiu Li1
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Science, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing, 100190, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|March 7, 2025
Summary
Researchers developed dynamic circularly polarized luminescence (CPL) materials using luminescent hydrogen-bonded organic frameworks (HOFs). These HOFs incorporate chiral guests, enabling tunable light emission and demonstrating a novel approach for chiroptical materials.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Photophysics
Background:
- Luminescent hydrogen-bonded organic frameworks (HOFs) show promise for dynamic applications due to their structural flexibility.
- Controlling luminescence properties in response to external stimuli is a key challenge in materials science.
Purpose of the Study:
- To develop a 2D HOF material capable of dynamic circularly polarized luminescence (CPL).
- To achieve efficient chirality transfer and tunable CPL using guest molecules within HOFs.
Main Methods:
- Fabrication of a 2D HOF via binary assembly of specific organic components.
- Incorporation of chiral carvone molecules into HOF channels via hydrogen bonding.
- Analysis of CPL properties and emission color changes upon guest desorption.
Main Results:
- Successful construction of a 2D HOF material exhibiting dynamic CPL.
- Demonstrated efficient chirality transfer from guest molecules to the HOF.
- Observed emission color tuning from cyan to yellow due to guest desorption-induced interlayer contraction.
Conclusions:
- Hydrogen bonding enhances host-guest chirality transfer in HOFs.
- Guest desorption-triggered interlayer contraction offers a simple route to dynamic chiroptical properties.
- This approach provides a new method for designing responsive luminescent materials.
