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Highly Luminescent Copper(I) Halide Phosphors Encapsulated in Fumed Silica for Anti-Counterfeiting and Color-Converting Applications
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2022-04-17 , DOI: 10.1002/adom.202200278 Maosheng Chen 1 , Chenyu Ye 1 , Chengqin Dai 1 , Ruijuan Qi 1 , Hanmei Fu 1 , Chunhua Luo 1 , Hui Peng 1 , Hechun Lin 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2022-04-17 , DOI: 10.1002/adom.202200278 Maosheng Chen 1 , Chenyu Ye 1 , Chengqin Dai 1 , Ruijuan Qi 1 , Hanmei Fu 1 , Chunhua Luo 1 , Hui Peng 1 , Hechun Lin 1
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Luminescent Cu(I) hybrid materials are currently receiving increasing attention due to their rich photophysical properties with promising phosphors applications. However, the complex synthesis processes usually involving chemotoxic organic solutions largely hinder their practical applications. Herein, the authors introduce the highly luminescent copper(I) halide phosphors encapsulated in fumed silica synthesized via aqueous mechanochemical process. By using different precursors, they obtain blue, green, and orange emission copper(I) halide phosphors with high photoluminescence quantum yields. The green emission is owing to the formation of the well-known 0D (18-crown-6)2Na2(H2O)3Cu4I6 (CNCI), while the blue and orange emissions are ascribed to the formation of the novel 1D (18-crown-6)2Na2(H2O)3Cu2Cl4 (CNCCl) and 0D (18-crown-6)2Na2(H2O)3Cu4Br6 (CNCBr) crystal structures, respectively. It is demonstrated that waterborne luminescent inks can be directly prepared from those phosphors via blending them with various waterborne polymers. The combination of three primary colors can lead to various spectra with multiple anti-counterfeiting functions. Further, such phosphors can also be embedded into polystyrene resin to form homogeneous luminescent composites, which can be used to prepare free-standing luminescent films and fabricate light-emitting diode (LED) with tunable emissions. This strategy opens a new avenue for the development of low-cost, highly luminescent phosphors.
中文翻译：
气相二氧化硅封装的高亮度卤化铜 (I) 磷光体，用于防伪和变色应用
发光的 Cu(I) 杂化材料由于其丰富的光物理特性和有前景的荧光粉应用而受到越来越多的关注。然而，通常涉及化学毒性有机溶液的复杂合成过程在很大程度上阻碍了它们的实际应用。在此，作者介绍了封装在气相二氧化硅中的高发光卤化铜 (I) 荧光粉，该气相二氧化硅是通过水性机械化学工艺合成的。通过使用不同的前体，他们获得了具有高光致发光量子产率的蓝色、绿色和橙色发射卤化铜 (I) 荧光粉。绿色发射是由于形成了众所周知的 0D (18-crown-6) 2 Na 2 (H 2 O) 3 Cu 4 I 6(CNCI)，而蓝色和橙色发射归因于新型 1D (18-crown-6) 2 Na 2 (H 2 O) 3 Cu 2 Cl 4 (CNCCl) 和 0D (18-crown-6) 的形成) 2 Na 2 (H 2 O) 3 Cu 4 Br 6(CNCBr) 晶体结构，分别。结果表明，水性发光油墨可以直接由这些荧光粉通过与各种水性聚合物共混来制备。三基色的组合可以产生具有多种防伪功能的各种光谱。此外，这种荧光粉还可以嵌入聚苯乙烯树脂中形成均匀的发光复合材料，可用于制备自立式发光薄膜和制造具有可调发射的发光二极管（LED）。这一策略为开发低成本、高发光荧光粉开辟了一条新途径。
更新日期：2022-04-17
中文翻译：
气相二氧化硅封装的高亮度卤化铜 (I) 磷光体，用于防伪和变色应用
发光的 Cu(I) 杂化材料由于其丰富的光物理特性和有前景的荧光粉应用而受到越来越多的关注。然而，通常涉及化学毒性有机溶液的复杂合成过程在很大程度上阻碍了它们的实际应用。在此，作者介绍了封装在气相二氧化硅中的高发光卤化铜 (I) 荧光粉，该气相二氧化硅是通过水性机械化学工艺合成的。通过使用不同的前体，他们获得了具有高光致发光量子产率的蓝色、绿色和橙色发射卤化铜 (I) 荧光粉。绿色发射是由于形成了众所周知的 0D (18-crown-6) 2 Na 2 (H 2 O) 3 Cu 4 I 6(CNCI)，而蓝色和橙色发射归因于新型 1D (18-crown-6) 2 Na 2 (H 2 O) 3 Cu 2 Cl 4 (CNCCl) 和 0D (18-crown-6) 的形成) 2 Na 2 (H 2 O) 3 Cu 4 Br 6(CNCBr) 晶体结构，分别。结果表明，水性发光油墨可以直接由这些荧光粉通过与各种水性聚合物共混来制备。三基色的组合可以产生具有多种防伪功能的各种光谱。此外，这种荧光粉还可以嵌入聚苯乙烯树脂中形成均匀的发光复合材料，可用于制备自立式发光薄膜和制造具有可调发射的发光二极管（LED）。这一策略为开发低成本、高发光荧光粉开辟了一条新途径。
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