Dual-band high-dissymmetry circularly polarized luminescence from cholesteric liquid crystals overlaid a gold cluster film
Recently, near-infrared (NIR) circularly polarized luminescence (CPL) has emerged as a research hotspot owing to its unique application prospects. Atomic precision Au clusters (AuCs) have shown excellent biocompatibility and characteristic emission in the NIR region, and have found various applications in biosensing and imaging. Here, we achieve stable and highly dissymmetric CPL in both visible and NIR regions from cholesteric liquid crystals (CLCs) overlaid on a uniform AuCs film. The g<sub>lum</sub> factors (Maximum 2) in the visible and the NIR regions reach 1.8 and 0.7, respectively. AuCs films are prepared by the anti-solvent precipitation method for the first time. By overlaying wide-band CLCs on the AuCs film, dual CPL is simultaneously realized in both visible and NIR regions. Based on the intrinsic properties of CLCs, electrically tunable, thermally reversible and optically tunable CPL from CLCs/AuCs composites are successfully demonstrated. These features of CLCs/AuCs composites offer possibilities for applications in cryptography and anti-counterfeiting.
Authors
- Ruotong Wang (ORCID: https://orcid.org/0000-0001-9758-7458)
- Yin Xiao (ORCID: https://orcid.org/0000-0001-6582-261X)
- Rui Cao (ORCID: https://orcid.org/0000-0002-1821-9583)
- Huizhen Ma (ORCID: https://orcid.org/0009-0007-5840-9844)
- Zhenda Chen
- Xichen Hao (ORCID: https://orcid.org/0009-0003-4800-4182)
- Haitao Dai (ORCID: https://orcid.org/0000-0001-5424-6047)
- Changlong Liu (ORCID: https://orcid.org/0000-0002-6943-1090)
- Xiaodong Zhang (ORCID: https://orcid.org/0000-0002-7212-0138)
- Yuhan Wang (ORCID: https://orcid.org/0000-0002-5880-5069)
- Yanjun Liu (ORCID: https://orcid.org/0000-0001-8724-0434)
- Ying Liu (ORCID: https://orcid.org/0000-0002-0249-5698)
- Shouzhong Feng
- Yaxian Cao
- Buyi Yao (ORCID: https://orcid.org/0009-0005-8445-0635)
Institutions
- Tianjin University of Technology (CN)
- Tianjin University (CN)
- Southern University of Science and Technology (CN)
- Anhui Science and Technology University (CN)
- Tianjin Medical University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-10-31
- DOI
- https://doi.org/10.1038/s41467-025-64637-y
- Citations
- 1
- Primary Topic
- Nanocluster Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.52
Funders
- National Natural Science Foundation of China
- Graduate Research and Innovation Projects of Jiangsu Province