Dual-mode luminescence anti-counterfeiting and white light emission of NaGdF 4 :Ce,Eu,Tb/carbon dot hydrophilic nanocomposite ink.

Autor: Liang J; School of Materials Science and Hydrogen Energy, Foshan University Foshan 528000 China fanting@fosu.edu.cn.; Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000 China.; Foshan Inorganic Micro-Nano Luminescent Materials Engineering Technology Research Center Foshan 528000 China., Fan T; School of Materials Science and Hydrogen Energy, Foshan University Foshan 528000 China fanting@fosu.edu.cn.; Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000 China.; Foshan Inorganic Micro-Nano Luminescent Materials Engineering Technology Research Center Foshan 528000 China., Lü JT; School of Physics and Optoelectronic Engineering, Foshan University Foshan 528200 China keentle@gmail.com., Guan T; School of Materials Science and Hydrogen Energy, Foshan University Foshan 528000 China fanting@fosu.edu.cn.; Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000 China.; Foshan Inorganic Micro-Nano Luminescent Materials Engineering Technology Research Center Foshan 528000 China., Deng TT; School of Physics and Optoelectronic Engineering, Foshan University Foshan 528200 China keentle@gmail.com., Xiong B; School of Materials Science and Hydrogen Energy, Foshan University Foshan 528000 China fanting@fosu.edu.cn.; Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000 China.; Foshan Inorganic Micro-Nano Luminescent Materials Engineering Technology Research Center Foshan 528000 China.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2023 Aug 29; Vol. 13 (37), pp. 25681-25690. Date of Electronic Publication: 2023 Aug 29 (Print Publication: 2023).
DOI: 10.1039/d3ra04368a
Abstrakt: NaGdF 4 :Ce,Eu,Tb nanocrystals were successfully prepared by a one-step hydrothermal method with Ce 3+ ions as sensitizers, Eu 3+ and Tb 3+ ions as activators, and polyethylenimine (PEI) as surfactants. Color-adjustable fluorescence emission was achieved by the energy transfer effect between rare earth ions. Blue fluorescent carbon quantum dots (CDs) with a double UV response under 254 nm and 365 nm excitation were synthesized by a one-step hydrothermal method. A hydrophilic NaGdF 4 :Ce,Eu,Tb/CD composite ink was prepared by an easy physical mixing method. Because of the electrostatic self-assembly effect, the color adjustable luminescence was achieved in a few seconds, and the white light emission with color coordinates of (0.32, 0.32) was obtained. A dual-mode luminescence anti-counterfeiting pattern was designed and achieved by excitation with ultraviolet light at 254 nm and 365 nm.
Competing Interests: We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work reported in this manuscript.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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