Excitation orthogonalized upconversion nanoprobe for instant visual detection of trinitrotoluene

作     者：Xu Li Xu Zhao Xiaoyu Xu Yang Lu Jiahang Wu Fangmeng Liu Xu Yan Peng Sun Chenguang Wang Xianggui Kong Xiaomin Liu Geyu Lu Xu Li;Xu Zhao;Xiaoyu Xu;Yang Lu;Jiahang Wu;Fangmeng Liu;Xu Yan;Peng Sun;Chenguang Wang;Xianggui Kong;Xiaomin Liu;Geyu Lu

作者机构：State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin UniversityChangchun 130012China Department of Public Security of Jilin ProvinceChangchun 130051China State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and physicsChinese Academy of ScienceChangchun 130033China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第1期

页      面：1491-1499页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.61875191,U2003127,62171194,11874355,and 21902057) Natural Science Foundation of Jilin Province(No.20210101380JC) 

主　　题：orthogonal luminescence NaErF4 core/multi-shell structure anti-counterfeiting trinitrotoluene(TNT)detection 

摘      要：Excitation-emission orthogonalized luminescent upconversion nanoparticles(OUCNPs),which can respond to changes in external stimuli accordingly,show great promise in many intelligent ***,the construction of such materials mostly relies on the selective absorption of Nd3+and Yb3+at different wavelengths and the long-range energy migration between the layers,resulting in complex structures and limited orthogonal luminescence ***,we developed a relatively simple structure of OUCNPs(β-NaErF4@NaLuF4@NaYF4:20%Yb,2%Er@NaLuF4),where the fluorescence emission switches from red to green when the excitation wavelength is shifted from 808 to 980 *** structure exhibits high-quality,independent,and non-interfering orthogonal luminescence properties without Nd3+sensitization and long-range energy *** a proof of concept,we demonstrate the application of the designed OUCNPs in *** also prepared OUCNPs@PEI(PEI=polyethylenimine)self-referencing fluorescent probes to enable quantitative analysis of trinitrotoluene(TNT)in solution with a detection limit of 3.04μ*** probes can be made into test strips for portable on-site visual detection of TNT,and can also be used to image latent fingerprints and detect explosive residues in fingerprints *** concept proposed in this work can be extended to the visual detection of a larger range of organic and biological molecules,and is highly promising for practical applications.