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Highly Ordered Superlattices from Self-assembly of Fe_3O_4 Nanocrystals

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Zhang Ran 1   Tian Ye 2   LU Chao 2   Liu Lianqing 3   Liu Xiaoming 4 *  
文摘 The nano materials often exhibit very interesting electrical, optical, magnetic, and chemical properties, which can not be achieved by their bulk counterparts. The development of uniform nanometer sized particles has been intensively pursued because of their technological and fundamental scientific importance. It is significant that nanostructured materials can be controllably assembled into the required geometry onto substrates, becoming the basis of the next generation of components and devices. The development of new methods and strategies for organizing the nanoparticle basic building blocks into the desired structures is required. Superlattices made from these building blocks give us the opportunity to study not only the properties of the individual building blocks, but also collective effects. The superparamagnetic iron oxide nanocrystals(NCs) have been used in the fields of bio-medicine, ferrofluids, refrigeration system, catalysis, particularly in magnetic resonance imaging, tissue engineering, and drug delivery applications. Especially, because of the increasing need for high area density storage, the synthesis and characterization of magnetic NCs have been extensively investigated. The assembly of uniform magnetic NCs into well-defined two- and three-dimensional superlattices with spatial orientation and arrangement has attracted much attention because it is critically important to magnetic nanodevices and would bring possibilities to brand-new properties and applications. Until recently, there has been some lack of simple method to produce highly ordered spontaneous organization of magnetic NCs. Here we will report the synthesis of monodispersive Fe_3O_4 NCs with narrow size distribution, monolayer and multilayer superlattices formed by self-assembly of the as-synthesized NCs during solvent evaporation.
来源 Chemical Research in Chinese Universities ,2014,30(3):343-346 【核心库】
DOI 10.1007/s40242-014-4095-x
关键词 Magnetic nanocrystal ; Self-assembly ; Highly ordered superlattice ; Superparamagnetic property ; Monodisperse
地址

1. College of Electronic Science and Enginneering, Jilin University, State Key Laboratory on Integrated Optoelectronics;;State Key Laboratory of Robotics, Changchun, 130012  

2. College of Electronic Science and Enginneering, Jilin University, State Key Laboratory on Integrated Optoelectronics, Changchun, 130012  

3. Shenyang Institute of Automation, Chinese Academy of Sciences, State Key Laboratory of Robotics, Shenyang, 110016  

4. College of Chemistry, Jilin University, Changchun, 130012

语种 英文
文献类型 研究性论文
ISSN 1005-9040
学科 化学
基金 国家自然科学基金
文献收藏号 CSCD:5155995

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