期刊
NANOSCALE ADVANCES
卷 3, 期 15, 页码 4536-4540出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1na00252j
关键词
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资金
- National Key R&D Program of China [2017YFB1002900]
- National Natural Science Foundation of China [61622402]
- Jiangsu Specially-Appointed Professor programme
This study developed an environmentally friendly room temperature phosphorescent composite with ultra-long phosphorescence lifetime and outstanding afterglow feature. The moisture sensitive afterglow was utilized for multi-level anti-counterfeiting and complex decryption of encrypted information.
Room temperature phosphorescent (RTP) materials are rising and gaining considerable attention due to their special photo-capture-release ability. Herein, a kind of environmentally friendly RTP composite was devised by microwaving a mixture of carbon dots, boric acid, and urea, in the presence of covalent bonds and hydrogen bonds between each of the components. The resultant RTP material showed ultra-long phosphorescence lifetime up to 1005.6 ms with an outstanding afterglow as long as 9.0 s. Moreover, this afterglow feature with moisture sensitive behavior was explored to achieve multilevel anti-counterfeiting, with the function of complex decryption of encrypted secret information under multiple stimuli. Our results provide a green strategy for scalable synthesis of carbon-based RTP materials, and extend their application scope to high level information security.
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