Synthesis of Green Emissive Carbon Dots@Montmorillonite Composites and Their Application for Fabrication of Light-Emitting Diodes and Latent Fingerprints Markers
Synthesis of Green Emissive Carbon Dots@Montmorillonite Composites and Their Application for Fabrication of Light-Emitting Diodes and Latent Fingerprints Markers
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绿色发射碳点@蒙脱土复合材料的合成及其在发光二极管和潜指纹标记制造中的应用
DOI：
10.1016/j.jcis.2019.07.022
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发表时间：
2019
影响因子：
9.9
通讯作者：
Qu Song Nan
中科院分区：
文献类型：
--
作者：
Zhai Yue Chen;Shen Fang Zhong;Zhang Xu Tao;Jing Peng Tao;Li Di;Yang Xu Dong;Zhou Ding;Xu Xiao Wei;Qu Song Nan
多功能固态发光材料具有广泛的应用前景。本文以绿色发射碳点和蒙脱土为原料，通过在蒙脱土中嵌入g-CDS的方法，制备了绿色发射碳点@蒙脱土(g-CDS@MMT)复合材料。由于g-Cd被限制在蒙脱土基质的层状结构中，g-Cd均匀地分散在g-Cds@MMT固相复合材料中。这有效地防止了g-CDS的聚集诱导的固态发光猝灭，并且g-CDS@MMT复合材料在405 nm的光下可以获得11%的光致发光量子产率。此外，g-CDS@MMT复合材料具有低毒、优异的热稳定性、光稳定性、耐有机溶剂性和小颗粒。所有这些优点使其能够应用于制备不同色温的白色发光二极管，其中g-CDS@MMT复合材料被用作颜色转换层。此外，利用g-CDS@MMT复合材料作为荧光标记标记，可以实现多种物体表面的潜在指纹检测。
Multifunctional solid-state luminescent materials are strongly desired in a wide variety of applications. In this work, green emissive carbon dots@montmorillonite (g-CDs@MMT) composites were synthesized based on green emissive carbon dots and MMT clays in a convenient method by embedding g-CDs into the MMT clays. Due to the confinement of g-CDs in the layered structure of the MMT clay matrix, g-CDs are uniformly dispersed in the resulting g-CDs@MMT solid-state composites. This efficiently prevents the aggregation-induced solid-state luminescence quenching of g-CDs, and a photoluminescence quantum yield of 11% could be achieved by the g-CDs@MMT composites under a 405 nm light. Additionally, the g-CDs@MMT composites exhibit low-toxicity, excellent thermal stability, photostability, resistance to organic solvents, and a small particle size. All of these advantages enable applications in fabricating white light-emitting diodes with different color temperatures, where the g-CDs@MMT composites are applied as the color conversion layer. Furthermore, by using the g-CDs@MMT composites as a fluorescence labeling marker, the latent fingerprint detection on a variety of object surfaces could be realized.