Advertisement

Synthesis and size control of gold nanoparticles in regular system of amphiphilic molecules

  • Yuan Hong
  • Liu Xiao-ling
  • Cai Ru-xiu
  • Pang Dai-wen
Abstract

Abstract

Two synthetic techniques for colloidal gold particles was improved by using SDS. And colloidal Au particles of mean diameters between 5 and 14 nm are synthesized, that exhibit improved monodispersity relative to previously published methods. According to the particular molecular structure of surfactants and different electrons distribution arising from colloidal small sizes and high surface/ volume ratios, it is found that there are a complex between SDS and Au3+ (and Au atoms ) during synthesizing colloidal gold nanoparticles and as a stablizer for Au particles, SDS can prevent their further growth. So the colloidal gold particles is monodispersize and more steady. But other surfactants don't affect the process of synthesizing gold nanoparticles because of their structures and properties different from SDS. Gold nanoparticles have considerable bioaffinity and can be applied to study the adsorption of proteins or polypeptides.

Key words

nanoparticle gold SDS size distribution 

Copyright information

© Springer 2002

Authors and Affiliations

  • Yuan Hong
    • 1
  • Liu Xiao-ling
    • 1
  • Cai Ru-xiu
    • 1
  • Pang Dai-wen
    • 1
  1. 1.College of Chemistry and Molecular SciencesWuhan UniversityWuhan, HubeiChina

Personalised recommendations