期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 6, 期 37, 页码 9897-9902出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc03757d
关键词
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资金
- NSFC [51773056, 51603067, 51373002]
- Hunan Provincial Natural Science Foundation of China [2018JJ3143]
- Open Project Program of State Key Laboratory of Chemo/Biosensing and Chemometrics [2016019]
- Open Project Program of Key Laboratory for High Performance and Functional Polymer Materials of Guangdong Province (South China University of Technology) [20160005]
- Bundesministerium fur Bildung und Forschung [031A360D]
The development of switchable white-light emitters is extremely challenging but urgently needed for various applications. We describe a class of switchable fluorescent polymeric nanoparticles (SFPNs) that can alternate their emission color among stable white, cyan, or pink. These SFPNs consist of a dye with cyan-light emission and a spiropyran (SP) derivative with photochromism. When the SP derivative is transferred to its merocyanine state, fluorescence resonance energy transfer (FRET) occurs from the cyan dye to the merocyanine one. In a rational design of transfer efficiency, a stable white-light emission is achieved. This white-light emission can be switched to the cyan-light one upon photoirradiation or pink-light one by solvent-induced swelling. Such multi-color fluorescent alternation is reversible and therefore allows for data encryption. Because of the facile synthesis, excellent long-term stability, fast photo-responsibility, high-contrast fluorescence, and outstanding switchability of these nanoparticles, we envision that they should have great potential in various applications such as high-resolution imaging, white luminescence, and data encryption.
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