| Fabrication, Characterization, and Surface-Enhanced Raman Activity Study of Silver Coated Gold Nanoparticulate Films |
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| 作者姓名： | 方靖淮 仲崇贵 沐仁旺 施建珍 葛存旺 |
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| 作者单位： | [1]Department of Physics, Nantong University, Nantong, Jiangsu 226007, China [2]Department of Chemistry, Nantong University, Nantong, Jiangsu 226007, China |
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| 基金项目： | Project supported bythe National Natural Science Foundation of China （No. 60571055）, Key Laboratory of 0ptical and Magnetic Resonance Spec- troscopy of East China Normal University and the Applied Research Program of Nantong City （No. K2006021）. |
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| 摘 要： | This paper reports a study on the preparation of Ag-clad Au colloidal monolayer films by a combination of colloid self-assembly and liquid phase microwave high-pressure technique. Firstly, monodisperse Au nanoparticles prepared by microwave heating method were assembled onto a quartz slide. Then, these Au colloidal particles on the quartz surface acted as seeds for growing the Ag-clad Au composite particulate films. The obtained particulate films were characterized by UV-Vis spectra and atomic force microscopy. It was found that the thickness of the shell and thus the size of particles in the composite colloidal films could be controlled by deposition of Ag on the preformed Au colloidal particle film in the microwave reaction system, and such films significantly increased the surface-enhanced Raman scattering enhancement （SERS） ability compared with Au colloidal particle films. Their strong enhancement ability may mainly stem from relatively large particle consisting of Ag cladding as well as effective coupling among particles in the Ag-clad Au particle ftlms.
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| 关 键 词： | 镀银 金纳米颗粒膜 自组装 特性 SERS 胶体膜 |
| 修稿时间： | 2006-01-262006-10-20 |
Fabrication, Characterization, and Surface-Enhanced Raman Activity Study of Silver Coated Gold Nanoparticulate Films |
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| FANG, Jing-Huai ZHONG, Chong-Gui MU, Ren-Wang SHI, Jian-Zhen GE, Cun-Wang.Fabrication, Characterization, and Surface-Enhanced Raman Activity Study of Silver Coated Gold Nanoparticulate Films[J].Chinese Journal of Chemistry,2007,25(5):609-615. |
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| Authors: | FANG Jing-Huai ZHONG Chong-Gui MU Ren-Wang SHI Jian-Zhen GE Cun-Wang |
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| Institution: | a Department of Physics, Nantong University, Nantong, Jiangsu 226007, China b Department of Chemistry, Nantong University, Nantong, Jiangsu 226007, China |
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| Abstract: | This paper reports a study on the preparation of Ag‐clad Au colloidal monolayer films by a combination of colloid self‐assembly and liquid phase microwave high‐pressure technique. Firstly, monodisperse Au nanoparticles prepared by microwave heating method were assembled onto a quartz slide. Then, these Au colloidal particles on the quartz surface acted as seeds for growing the Ag‐clad Au composite particulate films. The obtained particulate films were characterized by UV‐Vis spectra and atomic force microscopy. It was found that the thickness of the shell and thus the size of particles in the composite colloidal films could be controlled by deposition of Ag on the preformed Au colloidal particle film in the microwave reaction system, and such films significantly increased the surface‐enhanced Raman scattering enhancement (SERS) ability compared with Au colloidal particle films. Their strong enhancement ability may mainly stem from relatively large particle consisting of Ag cladding as well as effective coupling among particles in the Ag‐clad Au particle films. |
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| Keywords: | assembly microwave heating UV-Vis spectrum surface morphology SERS |
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