Two-dimensional self-organization of 1-nonanethiol-capped gold nanoparticles |
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Authors: | Peng Jiang Sishen Xie Jiannian Yao Shengtai He Haoxu Zhang Dongxia Shi Shijin Pang Hongjun Gao |
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Institution: | JIANG Peng, XIE Sishen, YAO Jiannian, HE Shengtai, ZHANG Haoxu, SHI Dongxia, PANG Shijin & GAO Hongjun 1. Beijing Laboratory of Vacuum Physics, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; 2. Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100101, China |
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Abstract: | A two-dimensional (2D) ordered hexagonal close-packed structure, formed by 1-nonanethiol-capped gold nanoparticles, is reported. The structure was constructed only by dipping the gold nanoparticle colloidal solution on flat substrate. The gold nanoparticles were synthesized as follows: First, AuCl4-1 was transferred from aqueous solution to toluene by the phase-transfer reagent of tetraoctylammonium bromide. Then it was reduced with aqueous sodium borohydride in the presence of a given amount of 1-nonanethiol molecules which was used to control the nucleation and growth of the gold nanoparticles for the desired size. The experimental techniques, such as UV-Vis, FT-IR, and X-ray photoelectron spectroscopy (XPS), were employed to characterize the obtained product. Transmission electron microscopy (TEM) measurement demonstrated the size of the gold nanoparticle and the formation of two-dimensional ordered hexagonal close-packed gold nanoparticle structure. |
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Keywords: | gold nanoparticle characterization self-organization |
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