Effect of Growth Temperature on Tailoring the Size and Aspect Ratio of Gold Nanorods
| Autor: | Xiaowei Liu, Xiaoshuang Duan, Tao Liu, Jingwen Yao, Yanbo Yao, Jiangjiang Luo |
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| Rok vydání: | 2017 |
| Předmět: |
Gold nanorod
Materials science Aspect ratio Analytical chemistry 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Pulmonary surfactant Chemical engineering Microscopy Electrochemistry General Materials Science Nanorod Surface plasmon resonance 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir. 33:7479-7485 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | The influence of temperature on the gold nanorod synthesis process and its effect on tailoring the size and aspect ratio have not been fully investigated and understood. A comprehensive study, involving SEM and TEM microscopy, Vis-NIR spectroscopy, quantitative data analysis and theoretical simulation, is performed to understand the effect of growth temperature on size, aspect ratio, and shape uniformity of gold nanorods that are synthesized by a recently developed binary-surfactant seed-mediated AuNR synthesis method. It has been demonstrated that the temperature can be used as a simple processing parameter to viably tailor the size and aspect ratio of AuNRs as well as the corresponding surface plasmon resonance behavior. The temperature coefficients for length, diameter, and aspect ratio have been, respectively, determined to be 3.5 nm/°C, 3.9 nm/°C, and -0.18/°C. With a combination of controlling temperature and formulation, the binary surfactant seed-mediated AuNR synthesis method expects to be a convenient way for producing gold nanorods with a large range of size and aspect ratio suitable for different applications. |
| Databáze: | OpenAIRE |
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