Circularly polarized luminescence with high dissymmetry factors for achiral organic molecules in solutions.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40133332.
- Also identified by DOI 10.1038/s41467-025-58355-8 and PMC identifier 11937319.
- Licence recorded as CC BY-NC-ND.
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Abstract
Circularly polarized luminescence (CPL) in solution offers several advantages. However, it remains challenging for organic molecules to achieve circularly polarized luminescence with high dissymmetry factor (g<sub>lum</sub>) in solution. Herein, a general strategy is developed by placing chiral nematic liquid crystals (N*-LCs) behind the solution of achiral organic molecules. The selective reflection-transmission mechanism of solution-N*-LC composite system enables the generation of full-color and white circularly polarized light with |g<sub>lum</sub>| even reaching 2.0. This strategy demonstrates versatility, being applicable to both aqueous and organic solutions, and effectively achieving the circularly polarized luminescence of multiple molecules with high g<sub>lum</sub> values. Additionally, CPL switching and logic gate applications are successfully realized by leveraging the selective reflection-transmission mechanism of N*-LCs and the reversible acid-base responsiveness of the solution systems. This work provides a general and robust strategy for achiral organic molecules to achieve circularly polarized luminescence with high |g<sub>lum</sub>| values in solutions.