A rapid and operator-safe powder approach for latent fingerprint detection using hydrophilic Fe3O4@SiO2-CdTe nanoparticles

作     者：Zhaolei Wang Xue Jiang Wenbin Liu Guolin Lu Xiaoyu Huang 

作者机构：Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences Shanghai 200032 China Shanghai Key Laboratory of Crime Scene Evidence Shanghai Research Institute of Criminal Science and Technology Shanghai 200083 China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2019年第62卷第7期

页      面：889-896页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：supported by National Key Research and Development Program of China(213 project) National Basic Research Program of China(2015CB931900) National Science Foundation for Distinguished Young Scholars(51825304) the National Natural Science Foundation of China(21632009,21674124,21704110) Strategic Priority Research Program of Chinese Academy of Sciences(XDB20000000) Shanghai Scientific and Technological Innovation Project(16DZ1205600,16JC1402500,17DZ1205401,17DZ1205402,18JC1410600,18JC1415500,18ZR1448600) Opening Project of Shanghai Key Laboratory of Crime Scene Evidence(2017XCWZK24,2015XCWZK15) 

主　　题：fingerprint magnetic nanoparticle fluorescence quantum dot 

摘      要：A new kind of bifunctional magnetic-fluorescent nanoparticles(NPs)with abundant carboxyls on the surface has been prepared by covalently combining glutathiose(GSH)-modified CdTe quantum dots(QDs)with Fe3O4@*** silica-coated Fe3O4NPs were functionalized with amino groups by(3-aminopropyl)triethoxysilane to provide Fe3O4@SiO2-NH2NPs,which was then chemically conjugated with GSH-modified CdTe QDs to form bifunctional magnetic-fluorescent NPs,Fe3O4@SiO2-NH-CO-CdTe-QDs *** properties and morphologies of Fe3O4@SiO2-NH-CO-CdTe-QDs NPs were investigated by FTIR,X-ray diffraction,transmission electron microscopy(TEM),absorption and fluorescence spectroscopy and vibrating sample *** images display that Fe3O4@SiO2-NH-CO-CdTe-QDsNPs possess spherical core-shell structure with a uniform size about 50 *** bifunctional NPs were found to exhibit good magnetic and strong fluorescent properties favorable for their application in the detection of latent ***,the carboxyls on the surface of NPs have good absorptions with water in air and the residues of fingerprints so as to not only avoid dust flying to protect the health of operators,but also improve the efficiency of detection.