Synthesis of SERS active Au nanowires in different noncoordinating solvents |
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Authors: | Xiaomiao Hou Xiaoling Zhang Yan Fang Shutang Chen Na Li Qi Zhou |
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Institution: | (1) Department of Chemistry, School of Science, Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing, 100081, People’s Republic of China;(2) Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Capital Normal University, Beijing, 100037, People’s Republic of China; |
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Abstract: | Au nanowires with length up to micrometers were synthesized through a simple and one-pot solution growth method. HAuCl4 was reduced in a micellar structure formed by 1-octadecylamine and oleic acid in hexane, heptane, toluene and chloroform,
respectively. As the non-polarity of noncoordinating solvents can affect the nucleation and growth rates of Au nanostructures,
Au nanowires with different diameters could be obtained by changing the noncoordinating solvents in the synthetic process.
The influences of the solvents on the morphology of Au nanowires were systematically studied. When using hexane as reaction
solvent, the product turned to be high portion of Au nanowires with more uniform size than the others. Furthermore, surface-enhanced
Raman scattering (SERS) spectrum of 2-thionaphthol was obtained on the Au nanowire-modified substrate, indicating that the
as-synthesized Au nanowires have potential for highly sensitive optical detection application. |
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