Triple-Mode Emission of Carbon Dots: Applications for Advanced Anti-Counterfeiting

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• 作者：Kai Jiang ; Dr. Ling Zhang ; Junfeng Lu ; Prof. Chunxiang Xu ; Prof. Congzhong Cai and Prof. Hengwei Lin
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：June 13, 2016
• 年：2016
• 卷：128
• 期：25
• 页码：7347-7351
• 全文大小：1501K
• ISSN：1521-3757

文摘

Photoluminescence (PL), up-conversion PL (UCPL), and phosphorescence are three kinds of phenomena common to light-emitting materials, but it is very difficult to observe all of them simultaneously when they are derived from a single material at room temperature. For the first time, triple-mode emission (that is, PL, UCPL, and room temperature phosphorescence (RTP)) is reported, which relies on a composite of the luminescent carbon dots (CDs) prepared from m-phenylenediamine and poly(vinyl alcohol) (PVA). Moreover, the CDs-PVA aqueous dispersion is nearly colorless and demonstrates promise as a triple-mode emission ink in the field of advanced anti-counterfeiting.