Ji Ming-Jun, Zhao Wen-Long, Li Meng, Chen Chuan-Feng
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
University of Chinese Academy of Sciences, Beijing, China.
Nat Commun. 2025 Mar 26;16(1):2940. doi: 10.1038/s41467-025-58355-8.
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) 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| 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 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| values in solutions.
溶液中的圆偏振发光（CPL）具有若干优势。然而，对于有机分子而言，要在溶液中实现具有高不对称因子（g）的圆偏振发光仍具有挑战性。在此，通过将手性向列型液晶（N * -LCs）置于非手性有机分子溶液之后，开发了一种通用策略。溶液 - N * -LC复合体系的选择性反射 - 透射机制能够产生全色和白色圆偏振光，其|g|值甚至可达2.0。该策略具有通用性，适用于水溶液和有机溶液，并能有效实现多种具有高g值分子的圆偏振发光。此外，通过利用N * -LCs的选择性反射 - 透射机制以及溶液体系的可逆酸碱响应性，成功实现了CPL开关和逻辑门应用。这项工作为非手性有机分子在溶液中实现具有高|g|值的圆偏振发光提供了一种通用且稳健的策略。
