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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 2, 2003
Accepted June 18, 2003

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Aspect Ratio Controlled Synthesis of Gold Nanorods

Sung Koo Kang Soonwoo Chah Chang Yeon Yun Jongheop Yi^†

School of Chemical Engineering, Seoul National University, Seoul 151-742, Korea

Korean Journal of Chemical Engineering, November 2003, 20(6), 1145-1148(4), 10.1007/BF02706952

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Abstract

Au nanorods were synthesized by using seed-mediated methods. The aspect ratio of the Au nanorods was controlled by temperature and the amount of surfactant used and the rods were characterized by TEM, HRTEM and UV-VIS spectrophotometer. Au nanorods with high aspect ratio could be prepared by decreasing the temperature used and controlling the surfactant concentration. The UV-VIS absorption spectra of the nanorods also showed variations in the aspect ratio. These results suggest that Au nanorods form, via an anisotropic growth mechanism, and that the surfactant plays a role in this process.

Keywords

Gold (Au) Nanorod Anisotropy Surfactant Cetyltrimethyl Ammonium Bromide (CTAB)

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