期刊
MATERIALS TODAY CHEMISTRY
卷 25, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mtchem.2022.100972
关键词
Carbon dots; Multicolor fluorescence; Fluorescents inks; Fluorescent anti-counterfeiting; Information encryption
资金
- National Natural Science Foun-dation of China [21874087, 91843301]
- Natural Science Foundation of Shanxi Province [201901D211155]
A novel approach for fabricating color-adjustable carbon dots (CDs) via hydrothermal treatment has been proposed. The synthesized CDs emit blue, green, and orange fluorescence and show strict excitation independence and excellent photostability. They have been successfully applied as fluorescent inks for anti-counterfeiting and information security purposes.
A novel approach for fabricating color-adjustable carbon dots (CDs) is proposed via hydrothermal treatment of p-aminobenzenesulfonic acid and o-, m-, or p-phenylenediamines, respectively. The assynthesized CDs can emit blue, green, and orange fluorescence and are named b-CDs, g-CDs, and oCDs, respectively. All of them have strict excitation independence and excellent photostability. Variations of photoluminescence emitting them are attributed to the difference in their particle size, the degree of oxidation, and the content of N-related states on their surface. Furthermore, these multicolor CDs have been used as fluorescents inks, which perform well in anti-counterfeiting and information security. (c) 2022 Elsevier Ltd. All rights reserved.
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