Abstract
Based on the electrostatic interaction between carboxymethylated chitosan (CMCH) and negatively charged CdTe quantum dots, and the selective crosslinking of CMCH using glutaraldehyde(GA), we demonstrated the formation of Fe3O4/SiO2/CMCH/CdTe microspheres. The dense silicate shells of Fe3O4 nano-particles (NPs) protect the luminescence quenching from Fe3O4 NPs, so the composite microspheres have great fluorescence and emulative magnetism. These multifunctional fluorescence/magnetic microspheres lead to robust and water dispersible nanoparticle colloidosomes, and should be of great importance for diagnostics application and specific biological applications.
Keywords: Multifunctional Microspheres, Fe3O4/SiO2/CMCH/CdTe, Fluorescence, Magnetic, Preparation, Characterizations, Biological applications, Diagnostics application, Tracking, Targeting
Current Nanoscience
Title: Fluorescence-Functionalized Magnetic Nanocomposites as Tracking and Targeting Systems: Their Preparation and Characterizations
Volume: 7 Issue: 4
Author(s): Xibin Yi, Xiaodong Shen, Sheng Cui, Maohong Fan and Yongmei Li
Affiliation:
Keywords: Multifunctional Microspheres, Fe3O4/SiO2/CMCH/CdTe, Fluorescence, Magnetic, Preparation, Characterizations, Biological applications, Diagnostics application, Tracking, Targeting
Abstract: Based on the electrostatic interaction between carboxymethylated chitosan (CMCH) and negatively charged CdTe quantum dots, and the selective crosslinking of CMCH using glutaraldehyde(GA), we demonstrated the formation of Fe3O4/SiO2/CMCH/CdTe microspheres. The dense silicate shells of Fe3O4 nano-particles (NPs) protect the luminescence quenching from Fe3O4 NPs, so the composite microspheres have great fluorescence and emulative magnetism. These multifunctional fluorescence/magnetic microspheres lead to robust and water dispersible nanoparticle colloidosomes, and should be of great importance for diagnostics application and specific biological applications.
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Cite this article as:
Yi Xibin, Shen Xiaodong, Cui Sheng, Fan Maohong and Li Yongmei, Fluorescence-Functionalized Magnetic Nanocomposites as Tracking and Targeting Systems: Their Preparation and Characterizations, Current Nanoscience 2011; 7 (4) . https://dx.doi.org/10.2174/157341311796196781
DOI https://dx.doi.org/10.2174/157341311796196781 |
Print ISSN 1573-4137 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6786 |
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