Formation of ordered arrays of gold nanoparticles from CTAB reverse micelles

被引：78

作者：

Lin, J

Zhou, WL

O'Connor, CJ

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China

[2] Univ New Orleans, Adv Mat Res Inst, Coll Sci, New Orleans, LA 70148 USA

来源：

MATERIALS LETTERS | 2001年 / 49卷 / 05期

关键词：

gold nanoparticles; from reduction of HAuCl4 in reverse micelle; self-organization; TEM;

D O I：

10.1016/S0167-577X(00)00385-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this presentation, a reverse micelle technique was described to create colloid gold nanoparticles and their self-organization into superlattices. Gold nanoparticles were prepared by the reduction of HAuCL4 in CTAB/octane + 1-butanol/H2O reverse micelle system using NaBH4 as reducing agent. Dodecanethiol (C12H25SH) was used to passivate the gold nanoparticles immediately after formation of the gold colloid. After re-dispersing in toluene under ultrasonication, a supernatant containing nearly monodispersed dodecanethiol-capped gold nanoparticles was obtained. Self-organization of the gold nanoparticles into 1D, 2D and 3D superlattices was observed on the carbon-coated copper grid by TEM. UV-vis absorption spectra were also used to characterize the gold colloids with and without dodecanethiol capping. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：282 / 286

页数：5

共 27 条

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