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Synthesis and Properties of Core-Shell Structure Ag@BaGdF5: Yb3+, Ho3+ Multifunctional Nanocomposites
Author NameAffiliationE-mail
SUI Jing-Ting Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China  
CHEN Zi-Yu Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China  
LIU Gui-Xia Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China liuguixia22@163.com 
SONG Chao Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China songchaocc@126.com 
DONG Xiang-Ting Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China  
Abstract: Core-shell structure multifunctional Ag@BaGdF5:Yb3+, Ho3+ nanocomposites were prepared by a simple wet method. XRD patterns showed that the nanocomposites consisted of cubic phase Ag and BaGdF5. Electron microscope images indicated that the nanocomposites were spherical shape with the thickness of~14 nm (BaGdF5:Yb3+, Ho3+ as shell) and a diameter of 77 nm (Ag nanoparticles as core). The nanocomposites had good upconversion emission with the strongest green emission centered at about 540 nm from the photoluminescence spectra, which is helpful to apply in intracellular imaging to diagnose lesion. Furthermore, the samples possessed better paramagnetism and photothermal conversion properties. MTT measurement demonstrates that the nanocomposites have better biocompatibility. When incubated with HeLa cells, the nanocomposites had bright green upconversion imaging under 980 nm irradiation. Compared with commercial computed tomography (CT) imaging contrast agent iobitridol, the Ag@BaGdF5:Yb3+, Ho3+ nanocomposites had higher CT imaging properties. The heat converted from the nanocomposites could kill HeLa cells.
Keywords: nanostructures  fluorescence  nanocomposites  upconversion
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SUI Jing-Ting,CHEN Zi-Yu,LIU Gui-Xia,SONG Chao,DONG Xiang-Ting.Synthesis and Properties of Core-Shell Structure Ag@BaGdF5: Yb3+, Ho3+ Multifunctional Nanocomposites[J].Chinese Journal of Inorganic Chemistry,2019,35(6):987-995.
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Chinese Journal of Inorganic Chemistry