Multiple-stimuli fluorescent responsive metallo-organic helicated cage arising from monomer and excimer emission
Effectively regulating monomer and excimer emission in a singular supramolecular luminous platform is challenging due to high difficulty of precise control over its aggregation and dispersion behavior when subjected to external stimuli. Here, we show a metallo-cage (MTH) featuring a triple helical motif that displays a unique dual emission. It arises from both intramolecular monomer and intermolecular excimer, respectively. The distorted molecular conformation and the staggered stacking mode of MTH excimer are verified through single crystal X-ray diffraction analysis. These structural features facilitate the switch between monomer and excimer emission, which are induced by changes in concentration and temperature. Significantly, adjusting the equilibrium between these two states in MTH enables the production of vibrant white light emission in both solution and solid state. Moreover, when combined with a PMMA (polymethyl methacrylate) substrate, the resulting thin films can serve as straightforward fluorescence thermometer and thermally activated information encryption materials.
Authors
- Qixia Bai (ORCID: https://orcid.org/0000-0002-4792-6447)
- Qingwu Long (ORCID: https://orcid.org/0000-0002-1669-2609)
- Zirui Zhai (ORCID: https://orcid.org/0000-0002-6353-6537)
- Pingshan Wang (ORCID: https://orcid.org/0000-0002-1988-7604)
- Ting‐Zheng Xie (ORCID: https://orcid.org/0000-0001-6717-7642)
- Guo‐Hong Ning (ORCID: https://orcid.org/0000-0002-5640-9062)
- Haobo Lin (ORCID: https://orcid.org/0009-0002-1500-8729)
- He Zhao (ORCID: https://orcid.org/0000-0001-7250-5102)
- Chuang‐Wei Zhou
- Tun Wu (ORCID: https://orcid.org/0000-0002-8721-6167)
- Wei Zhang (ORCID: https://orcid.org/0000-0002-6414-7015)
- Zhe Zhang (ORCID: https://orcid.org/0000-0001-7338-7718)
- Ermeng Han (ORCID: https://orcid.org/0009-0004-2120-8561)
Institutions
- Central South University (CN)
- Jinan University (CN)
- Hunan University (CN)
- Guangzhou University (CN)
- Shunde Polytechnic (CN)
- Pearl River Hydraulic Research Institute (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-08-23
- DOI
- https://doi.org/10.1038/s41467-024-51792-x
- Citations
- 22
- Primary Topic
- Luminescence and Fluorescent Materials
- Type
- article
- Field-Weighted Citation Impact
- 2.58
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Guangdong Province
- Guangzhou University
- Basic and Applied Basic Research Foundation of Guangdong Province