share
Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (14): 1617-1621. Previous Articles Next Articles
Full Papers
高倩1,2,钱勇1,2,夏炎1,蒋彩云1,钱卫平*,1
投稿日期:
修回日期:
发布日期:
通讯作者:
基金资助:
国家自然科学基金;国家863计划
Gao Qian1,2 Qian Yong1,2 Xia Yan1 Jiang Caiyun1 Qian Weiping*,1
Received:
Revised:
Published:
Contact:
Share
A novel approach to high-aspect ratio gold nanorods has been presented. The gold nanorods as long as (200±18.62) nm with aspect ratio of above 10 were prepared with optimizing the concentration of surfactant cetyltrimethylammonium bromide (CTAB) by seed-mediated growth method at 25 ℃. Mechanism for gold nanorods formation is discussed. It is shown that the aspect ratio and longitudinal surface plasmon resonance (SPR) can be correlated with the concentration of CTAB. Moreover, by simply enhancing the ion strength of the reaction solution, the as-prepared gold nanorods can be purified for the different electrostatic aggregation effects between gold nanorods and spherical nanoparticles. Shape change of gold nanorods is confirmed by transmission electron microscopy images (TEM) and scan electron microscopy (SEM).
Key words: gold nanorods, CTAB, ion strength, high aspect ratio
GAO Qian, QIAN Yong, XIA Yan, JIANG Cai-Yun, QIAN Wei-Ping. A Novel Method to Prepare High-aspect Ratio Gold Nanorods[J]. Acta Chimica Sinica, 2011, 69(14): 1617-1621.
Export EndNote|Reference Manager|ProCite|BibTeX|RefWorks