Triple-Mode Emission of Carbon Dots: Applications for Advanced Anti-Counterfeiting
Triple-Mode Emission of Carbon Dots: Applications for Advanced Anti-Counterfeiting
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DOI：
10.1002/anie.201602445
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发表时间：
2016-06-13
影响因子：
16.6
通讯作者：
Lin, Hengwei
中科院分区：
文献类型：
--
作者：
Jiang, Kai;Zhang, Ling;Lin, Hengwei
光致发光（PL）、上转换光致发光（UCPL）和磷光，是发光材料常见的三种现象，但当它们来自于一种单一材料且在室温下时，很难同时观察到这三种现象。首次报道了一种三模式发射（即PL、UCPL和室温磷光（RTP）），它基于由间苯二胺和聚乙烯醇（PVA）制备的发光碳点（CDs）的复合物。此外，CDs - PVA水分散体几乎无色，并在先进防伪领域显示出作为一种三模式发射墨水的应用前景。
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.