Self-assembly of gold nanoparticles to silver microspheres as highly efficient 3D SERS substrates
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- 作者：Shouhui Chen (1) (2)
Peng Huang (2)
Zhihua Wang (2)
Zhe Wang (2)
Magdalena Swierczewska (2)
Gang Niu (2)
Daxiang Cui (1)
Xiaoyuan Chen (2) - 关键词：Self ; assembly ; Gold nanoparticles ; Silver microspheres ; SERS
- 刊名：Nanoscale Research Letters
- 出版年：2013
- 出版时间：December 2013
- 年：2013
- 卷：8
- 期：1
- 全文大小：615KB
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Peng Huang (2)
Zhihua Wang (2)
Zhe Wang (2)
Magdalena Swierczewska (2)
Gang Niu (2)
Daxiang Cui (1)
Xiaoyuan Chen (2)
1. Department of Bio-Nano-Science and Engineering, National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Institute of Micro-Nano Science and Technology, Shanghai JiaoTong University, Shanghai, 200240, China
2. Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD, 20892, USA - ISSN：1556-276X
文摘
Herein we report a simple, one-pot, surfactant-free synthesis of 3D Ag microspheres (AgMSs) in aqueous phase at room temperature. The 3D AgMSs act as supports to fix the gold nanoparticles (GNPs) in 3D space via the interaction between the carboxyl groups of GNPs and the Ag atoms of AgMSs. The ensemble of AgMSs@GNPs with high surface-enhanced Raman scattering (SERS) activity and sensitivity can be an ideal 3D substrate choice for practical SERS detection applications. The simple self-assembly strategy may be extended to other metallic materials with great potentials in SERS, catalysis, and photoelectronic devices.