Nitrogen-doped carbon dots with excitation-dependent room temperature phosphorescence for multi-level anti-counterfeiting applications

被引：0
|
作者：
Xue, Jinkun [1 ,2 ,3 ]
Mao, Xiang [1 ,2 ,3 ]
Zhao, Xia [1 ,2 ,3 ]
Xie, Ting [1 ,2 ,3 ]
Hu, Hao [1 ,2 ,3 ]
Li, Zequan [1 ,2 ,3 ]
Gao, Wei [1 ,2 ,3 ,4 ,5 ]
机构：
[1] School of Resources, Environment and Materials, Guangxi University, Guangxi, Nanning,530004, China
[2] Guangxi Engineering and Technology Research Center for High Quality Structural Panels from Biomass Wastes, Guangxi, Nanning,530004, China
[3] State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi, Nanning,530004, China
[4] Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Guangxi, Nanning,530004, China
[5] Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Guangxi, Nanning,530004, China
来源：
Journal of Luminescence | 2024年 / 275卷
关键词：
In recent years; carbon dots (CDs) have received widespread attention due to their superior photoluminescence effect; high chemical stability and other characteristics. This research aims to explore a new multi-level anti-counterfeiting technology; which achieves efficient anti-counterfeiting of products by introducing the characteristics of Nitrogen-doped CDs (N-CDs) to excite room-temperature phosphorescence (RTP). Firstly; N-CDs were successfully prepared through a simple and effective synthesis method. The obtained N-CDs exhibited excellent RTP properties that lasted for 4 s; providing a feasible fluorescence (FL) label for multi-level anti-counterfeiting. Secondly; through the mixture of N-CDs and NaOH; a unique optical effect can be formed and the lifetime of FL can last for 8 ns; which improved the anti-counterfeiting capability and accuracy. Finally; further research found that the unique properties of N-CDs not only have broad application potential in the field of product anti-counterfeiting; but also can promote the development of anti-counterfeiting technology. This technique has the advantage of being easy to operate and low cost; as well as allowing RTP emission. Therefore; the multi-level anti-counterfeiting technology based on N-CDs proposed in this study provides an innovative and feasible solution to improve product security; and provides a solid foundation for research and application in related fields. © 2024;
D O I：
10.1016/j.jlumin.2024.120757
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