Self-assembly multifunctional nanocomposites with Fe3O4 magnetic core and CdSe/ZnS quantum dots shell

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	Self-assembly multifunctional nanocomposites with Fe3O4 magnetic core and CdSe/ZnS quantum dots shell
	Y. Zhang ; S. N. Wang ; S. Ma ; J. J. Guan ; D. Li ; X. D. Zhang ; Z. D. Zhang
刊名	Journal of Biomedical Materials Research Part A
	2008
卷号	85A 期号:3 页码:840-846
关键词	multifunctional nanocomposites magnetic nanoparticles fluorescence quantum dots sol-gel thiol coordination nanoparticles nanocrystals fluorescent separation particles bacteria spheres silica beads
ISSN号	1549-3296
中文摘要	This paper describes a new method for self-assembling multifunctional nanocomposites with a magnetic core of iron oxide Fe3O4 and a shell of CdSe/ZnS quantum dots (QDs). Two sol-gel processes were applied to form the uniform magnetic seeds (Fe3O4@SiO2-SH) and then the thiol coordination was used to bind the CdSe/ZnS QDs to the surface of the seeds. The multifunctional nanocomposites were characterized by means of transmission electron microscopy, X-ray diffraction, energy disperse spectroscopy, fluorescence spectroscopy, infrared spectroscopy, and superconducting quantum interference device (SQUID) magnetometer. The results showed that the magnetic Fe3O4 nanoparticles and the CdSe/ZnS fluorescent QDs were combined together. The nanocomposites were of spherical shape with a mean diameter of 25 nm and exhibited well magnetic response, photostability, chemical activity, and water miscibility. The method put forward here can also be extended to combine systems of other metal oxides and QDs to fabricate core-shell nanocomposites with multifunction for biomedical applications. (c) 2007 Wiley Periodicals, Inc.
原文出处	://WOS:000255530500031
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/33348]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Zhang,S. N. Wang,S. Ma,et al. Self-assembly multifunctional nanocomposites with Fe3O4 magnetic core and CdSe/ZnS quantum dots shell[J]. Journal of Biomedical Materials Research Part A,2008,85A(3):840-846.
APA	Y. Zhang.,S. N. Wang.,S. Ma.,J. J. Guan.,D. Li.,...&Z. D. Zhang.(2008).Self-assembly multifunctional nanocomposites with Fe3O4 magnetic core and CdSe/ZnS quantum dots shell.Journal of Biomedical Materials Research Part A,85A(3),840-846.
MLA	Y. Zhang,et al."Self-assembly multifunctional nanocomposites with Fe3O4 magnetic core and CdSe/ZnS quantum dots shell".Journal of Biomedical Materials Research Part A 85A.3(2008):840-846.