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Magnetic nanocomposites of Fe_3O_4/SiO_2-FITC with pH-dependent fluorescence emission |
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| Authors: | Yu Zhang Shang Wen Yan Gong LU Jin a State Key Laboratory of Bioelectronics Southeast University Nanjing China b Jiangsu Key Laboratory for Biomaterials Devices China |
| Affiliation: | a State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China;b Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210096, China |
| Abstract: | This paper describes the formation of magnetic and fluorescent nanocomposite particles which consist of superparamagnetic Fe_3O_4 core,SiO_2 shell and organic dye(FITC) coating layer on their surface.The obtained nanocomposites possess typical superparamagnetism and exhibit clear green fluorescence image.And their fluorescence emission is pH-dependent,which would be applied to pH sensing. |
| Keywords: | Nanocomposites Core-shell structure Magnetic nanoparticles Fluorescence |
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