INOR 632 |
| Recently, the metal nanostructures, especially Au nanoparticles, have received much attention due to their optical, catalytic properties and biotechnology applications. There have been a lot of preparation techniques in order to obtain the Au nanomaterials such as poly-ol process, and surfactant-mediated synthesis with/without seeds. In case of the surfactant-based method, cetyltrimethylammonium bromide has been widely used for the preparation of Au nanomaterials with various shapes and sizes. Gemini surfactant has very low critical micelle concentration and remarkable ability to decrease the surface tension of water. Moreover, the micellar packing parameters of Gemini surfactant, which consists of hydrophilic head, hydrophobic tail and spacer groups, can be easily controlled, compared with those of the general monovalent surfactants. In the present work, we have utilized the Gemini surfactants as the structure-directing agents to control the Au nanostructures. The structures of Au thus obtained, including nanoparticles and nanorods, are highly dependent on the concentrations of the Gemini surfactants, packing parameters, synthetic temperatures, etc. |
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Nanoscience: Synthesis and Characterization
7:00 PM-10:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Inorganic Chemistry |