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
	2008
发表期刊	Journal of Biomedical Materials Research Part A
ISSN	1549-3296
卷号	85A 期号:3 页码:840-846
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.
部门归属	[zhang, ying; ma, song; li, da; zhang, xiang-dong; zhang, zhi-dong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zhang, ying; ma, song; li, da; zhang, xiang-dong; zhang, zhi-dong] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [zhang, ying; wang, shao-ning] shen yang pharmaceut univ, coll pharmaceut engn, new delhi 110016, india. [guan, jiao-jiao; zhang, xiang-dong] liaoning univ, coll chem sci & engn, shenyang 110036, peoples r china.;zhang, y (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;yzhang7704@yahoo.com.cn
关键词	Multifunctional Nanocomposites Magnetic Nanoparticles Fluorescence Quantum Dots Sol-gel Thiol Coordination Nanoparticles Nanocrystals Fluorescent Separation Particles Bacteria Spheres Silica Beads
URL	查看原文
WOS记录号	WOS:000255530500031
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33348
专题	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.