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《Chinese Journal of Analysis Laboratory》 2013-08
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Synthesis of the composite structure of (FITC/SiO_2-CdTe QDs)-SiO_2 fluorescent coding nanoparticles

LIU Shu-xian,DONG Mei-ting,XU Jing-yi,LIANG Meng-chao and HUANG Chao-biao (College of Chemistry and Life Science,Zhejiang Normal University,Jinhua 321004)  
A composite structure of(FITC /SiO2-CdTe QDs)-SiO2 fluorescence coding nanoparticles was synthesized,and post-coding the(FITC /SiO2-CdTe QDs)-SiO2 nanoparticles with Cu2 + were prepared since Cu2 +could quench the fluorescence from CdTe QDs.Fluorescence spectrum,scanning tunneling microscope(SEM) and transmission electron microscopy(TEM) were used to characterize the SiO2 NPs and composite structure fluorescent coding nanoparticles.The test results show that the SiO2 NPs and fluorescent coding nanoparticles we got are uniformly distributed and spherical in shape.The particle size of the former is about 200 nm,and the later is about 300 nm.What’s more,(FITC /SiO2-CdTe QDs)-SiO2 fluorescent coding nanoparticles have distinguished dual fluorescence signals.
【Fund】: 国家自然科学基金资助项目(21175117)资助
【CateGory Index】: TQ422
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