Templated Assembly of Gold Nanoparticles into Microscale Tubules and Their Application in Surface-Enhanced Raman Scattering
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- 作者：Tie Wang ; Rongbo Zheng ; Xiaoge Hu ; Lixue Zhang ; Shaojun Dong
- 刊名：Journal of Physical Chemistry B
- 出版年：2006
- 出版时间：July 27, 2006
- 年：2006
- 卷：110
- 期：29
- 页码：14179 - 14185
- 全文大小：923K
- 年卷期：v.110,no.29(July 27, 2006)
- ISSN：1520-5207
文摘
We report a simple procedure to assemble gold nanoparticles into hollow tubular morphology with micrometerscale, wherein the citrate molecule is used not only as a reducing and capping agent, but also as an assemblingtemplate. The nanostructure and growth mechanism of microtubes are explored via SEM, TEM, FTIR spectra,and UV-vis spectra studies. The incorporation of larger gold nanoparticles by electroless plating results inan increase in the diameter of microtubes from 900 nm to about 1.2 
m. The application of the microtubesbefore and after electroless plating in surface-enhanced Raman scattering (SERS) is investigated by using4-aminothiophenol (4-ATP) as probe molecules. The results indicate that the microtubes both before andafter electroless plating can be used as SERS substrates. The microtubes after electroless plating exhibitexcellent enhancement ability.
m. The application of the microtubesbefore and after electroless plating in surface-enhanced Raman scattering (SERS) is investigated by using4-aminothiophenol (4-ATP) as probe molecules. The results indicate that the microtubes both before andafter electroless plating can be used as SERS substrates. The microtubes after electroless plating exhibitexcellent enhancement ability.