高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 359.

• Chemistry in Surface Science • 上一篇    下一篇

Formation of Ordered Arrays of Gold Nanoparticles from CTAB Reverse Micelles

LIN Jun1, ZHOU Wei-Lie2, O'CONNOR Charles-J2   

  1. 1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 159 Renmin Street, Changchun 130022, China;
    2. Advanced Materials Research Institute, College of Science, University of New Orleans, New Orleans, LA 70148, USA
  • 出版日期:2000-12-31 发布日期:2000-12-31

Formation of Ordered Arrays of Gold Nanoparticles from CTAB Reverse Micelles

LIN Jun1, ZHOU Wei-Lie2, O'CONNOR Charles-J2   

  1. 1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 159 Renmin Street, Changchun 130022, China;
    2. Advanced Materials Research Institute, College of Science, University of New Orleans, New Orleans, LA 70148, USA
  • Online:2000-12-31 Published:2000-12-31

PDF (PC)

摘要：

In this presentation, a reverse micelle technique was described to create colloid gold nanoparticles and their self-organization into superstructures. 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 ID, 2D and 3D superstructures was observed on the carbon-coated copper grid by TEM. A representative TEM mirograph of the 2D array is shown in Fig. 1. UV/Vis absorption spectra were also used to characterize the gold colloids with and without dodecanethiol capping.

Abstract:

In this presentation, a reverse micelle technique was described to create colloid gold nanoparticles and their self-organization into superstructures. 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 ID, 2D and 3D superstructures was observed on the carbon-coated copper grid by TEM. A representative TEM mirograph of the 2D array is shown in Fig. 1. UV/Vis absorption spectra were also used to characterize the gold colloids with and without dodecanethiol capping.

TrendMD: