Formation of Different Gold Nanocrystal Core-Resin Shell Structures through the Control of the Core Assembly and Shell Polymerization

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	Formation of Different Gold Nanocrystal Core-Resin Shell Structures through the Control of the Core Assembly and Shell Polymerization
	Z. H. Sun; Z. H. Bao; C. H. Fang; J. F. Wang
	2012
发表期刊	Langmuir
ISSN	0743-7463
卷号	28 期号:24 页码:9082-9092
摘要	The formation of different Au nanocrystal core resin shell structures through the control of the nanocrystal assembly and shell polymerization is investigated. 4-Mercaptophenol is employed together with formaldehyde as the resin monomers. 4-Mercaptophenol molecules bond to the surface of Au nanocrystals so that the resultant phenolic resin can intimately encapsulate Au nanocrystals. The morphologies of the obtained structures are determined by the nanocrystal assembly and the monomer polymerization behaviors, which are controlled by the solution pH as well as the monomer amounts. At pH = 8-9, Au nanorods are assembled and fused together under hydrothermal conditions in a preferential end-to-end manner. The fused structures are coated with a layer of resin, with the thickness controlled by the supplied amounts of the monomers. At pH = similar to 10, Au nanorods are coated with resin of controllable thicknesses and separated from each other. The resin-coated Au nanorods are stable in both aqueous and nonaqueous solutions. At pH = similar to 12, Au nanorods are coated with a thin layer of resin and assembled together in a side-by-side manner. A similar assembly and resin coating behavior is also observed with Au nanopolyhedrons. Moreover, plasmonic-fluorescent bifunctional structures are readily produced by incorporating CdTe nanocrystals in the resin shell that is coated on Au nanocrystals, owing to the presence of a number of thiol groups in the resin shell.
部门归属	[sun, zhenhua; bao, zhihong; fang, caihong; wang, jianfang] chinese univ hong kong, dept phys, shatin, hong kong, peoples r china. [sun, zhenhua] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;sun, zh (reprint author), chinese univ hong kong, dept phys, shatin, hong kong, peoples r china.;zhsun@imr.ac.cn; jfwang@phy.cuhk.edu.hk
关键词	Metal Nanoparticles Optical-properties Surface-plasmons Au Nanorods Growth Dimers Nanospheres Copolymers Scattering Resonance
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60251
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. H. Sun,Z. H. Bao,C. H. Fang,et al. Formation of Different Gold Nanocrystal Core-Resin Shell Structures through the Control of the Core Assembly and Shell Polymerization[J]. Langmuir,2012,28(24):9082-9092.
APA	Z. H. Sun,Z. H. Bao,C. H. Fang,&J. F. Wang.(2012).Formation of Different Gold Nanocrystal Core-Resin Shell Structures through the Control of the Core Assembly and Shell Polymerization.Langmuir,28(24),9082-9092.
MLA	Z. H. Sun,et al."Formation of Different Gold Nanocrystal Core-Resin Shell Structures through the Control of the Core Assembly and Shell Polymerization".Langmuir 28.24(2012):9082-9092.