Seed-mediated growth of gold nanoparticles using self-assembled monolayer of polystyrene microspheres as nanotemplate arrays
Xiang Yan-Juan(向彦娟)a), Wu Xiao-Chun(吴晓春)b), Liu Dong-Fang(刘东方)a), Zhang Zeng-Xing(张增星)a), Song Li(宋礼)a), Zhao Xiao-Wei(赵小伟)a), Liu Li-Feng(刘利峰)a), Luo Shu-Dong(罗述东)a), Ma Wen-Jun(马文君)a), Shen Jun(沈俊)a), Zhou Wei-Ya(周维亚)a), Zhou Jian-Jun(周建军)a), Wang Chao-Ying(王超英)a), and Wang Gang(王刚)a)†
a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Graduate School of the Chinese Academy of Sciences, Beijing 100080, China; b National Center for Nanoscience and Nanotechnology, Beijing 100080, China
Abstract Arrays of noble metal nanoparticles show potential applications in (bio-)sensing, optical storage, surface-enhanced spectroscopy, and waveguides. For all such potential devices, controlling the size, morphology, and interparticle spacing of the nanoparticles is very important. Here, we combine seed-mediated growth with nanosphere lithography to study the controllable growth of gold nanoparticles (Au NPs), in which the self-assembly monolayer of polystyrene (PS) on a silicon surface is used to guide the modification of alkanesilanes and the subsequent adsorption of gold seeds; seed-mediated growth is applied to controlling the morphology and size of Au NPs. The size of adsorption region (determining the number of adsorbed gold seeds) is controlled by etching PS microspheres with oxygen plasma or annealing PS microspheres at the glass transition temperature. The size and morphology of the Au NPs are controlled by changing growth conditions. In such a way, we have achieved the dual control of the obtained Au NPs. Preliminary results show that this strategy holds a great promise. This approach can also be extended to a wide range of materials and substrates.
Received: 11 April 2006
Revised: 06 June 2006
Accepted manuscript online:
(Waves, oscillations, and instabilities in plasmas and intense beams)
Fund: Project supported by the
National Natural Science Foundation of China (Grant No 10334060) and The
State Key Development \linebreak
\makebox[1.6mm]{}Program for Basic Research of China (Grant
No 2005CB623602).
Cite this article:
Xiang Yan-Juan(向彦娟), Wu Xiao-Chun(吴晓春), Liu Dong-Fang(刘东方), Zhang Zeng-Xing(张增星), Song Li(宋礼), Zhao Xiao-Wei(赵小伟), Liu Li-Feng(刘利峰), Luo Shu-Dong(罗述东), Ma Wen-Jun(马文君), Shen Jun(沈俊), Zhou Wei-Ya(周维亚), Zhou Jian-Jun(周建军), Wang Chao-Ying(王超英), and Wang Gang(王刚) Seed-mediated growth of gold nanoparticles using self-assembled monolayer of polystyrene microspheres as nanotemplate arrays 2006 Chinese Physics 15 2080
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