Hydrophobation and self-assembly of core-shell Au@SiO2 nanoparticles

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Hydrophobation and self-assembly of core-shell Au@SiO2 nanoparticles
	Qi YL(祁有丽) ; Chen M(陈淼) ; Liang S(梁山) ; Zhao J(赵晶) ; Yang W(杨武)
刊名	Colloids and Surfaces A: Physicochem. Eng. Aspects
	2007
卷号	302 页码:383-387
关键词	Core-shell Au@SiO2 nanoparticles Hydrophobic Air–water interface Self-assembly
ISSN号	0927-7757
通讯作者	陈淼
中文摘要	Herein, we reported an efficient process for preparing monodisperse gold nanoparticles coated with silica shells (Au@SiO2) by vortex mixture instead of magnetic stirring. Without using any other surface coupling silane reagent such as 3-aminopropyltriethoxysilane (APS), core-shell Au@SiO2 nanoparticles could be easily obtained. TEM and UV–vis were employed to characterize the morphologies and the optical properties of Au@SiO2 nanoparticles. Subsequently, hydrophobic Au@SiO2 nanoparticles were obtained by grafting hydrocarbon chains on silica surfaces of the particles using the silane-coupling reagent octadecyltrichlorosilane (OTS). These hydrophobic Au@SiO2 nanoparticles could easily self-assemble onto the air–water interface to form close packed two dimensional nanoparticle arrays. The particle arrays could be transferred onto solid substrates to form Au@SiO2 film. The composition of the hydrophobic Au@SiO2 nanoparticles was examined by Fourier-transform IR spectroscopy (FTIR). The microstructure of the film of hydrophobic Au@SiO2 nanoparticles was investigated by the scanning electron microscope (SEM) and the atomic force microscope (AFM), respectively.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Nature Science Foundation of China (Grant no. 20473106);the 973 Project (Grant no. 2003CB716200) of Chinese Ministry of Science and Technology;Innovation Group (Grant no. 50421502)
语种	英语
WOS记录号	WOS:000247192300058
公开日期	2013-11-01
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/4085]
专题	兰州化学物理研究所_固体润滑国家重点实验室
推荐引用方式 GB/T 7714	Qi YL,Chen M,Liang S,et al. Hydrophobation and self-assembly of core-shell Au@SiO2 nanoparticles[J]. Colloids and Surfaces A: Physicochem. Eng. Aspects,2007,302:383-387.
APA	祁有丽,陈淼,梁山,赵晶,&杨武.(2007).Hydrophobation and self-assembly of core-shell Au@SiO2 nanoparticles.Colloids and Surfaces A: Physicochem. Eng. Aspects,302,383-387.
MLA	祁有丽,et al."Hydrophobation and self-assembly of core-shell Au@SiO2 nanoparticles".Colloids and Surfaces A: Physicochem. Eng. Aspects 302(2007):383-387.