Simple one-step synthesis of water and organic media soluble gold nanoparticles with various shapes and sizes

Sook Young Moon, Tohru Sekino, Takafumi Kusunose, Shunichiro Tanaka

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Gold nanoparticles with an average diameter in the range 1-100 nm have been synthesized from hydrogen tetrachloroaureate (III) hydrate (HAuCl4·3H2O) in didodecyldimethyl ammonium bromide (DDAB) aqueous solutions at room temperature. The particle size could be controlled by the concentration of DDAB and HAuCl4·3H2O, and reaction temperature. An increase in DDAB concentration caused a change in the particle shape from spherical to triangular, rectangular or various shapes. Until critical concentration of DDAB, where the size of gold nanoparticles seemed to prevent particle growth from aggregation, and resulted in small particle size and narrow size distribution. And DDAB-coated nanoparticles can be dispersed well in both water and organic solvent with high colloidal stability.

Original languageEnglish
Pages (from-to)651-656
Number of pages6
JournalJournal of Crystal Growth
Volume311
Issue number3
DOIs
Publication statusPublished - 2009 Jan 15

Keywords

  • A1. Nanostructuers
  • A2. Growth from solutions
  • B1. Metals
  • B1. Nanomaterials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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