Preparation and comparison between different thiol-protected Au nanoparticles

Itamar Gofberg; Daniel Mandler

doi:10.1007/s11051-009-9738-3

Preparation and comparison between different thiol-protected Au nanoparticles

Itamar Gofberg, Daniel Mandler^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We report on the synthesis of monolayerprotected gold cluster (MPCs) in aquatic phase under different conditions. Three thiols, i.e., 2-mercaptoethanesulfonic acid (MPS), 3-mercaptopropionic acid (MPA), and cystamine (CYS) have been used as the protecting monolayer. Furthermore, we studied the effect of varying the ratio between the concentrations of the protecting layer, the gold ions, and the reducing agent in the preparation solution. Comparison was based on measuring the average diameter, stability, and size distribution of the MPCs. Best results were obtained for MPS-based MPCs and that the optimum molar concentration ratio between the protecting layer, the gold ions, and the reducing agent was 1:1:2.

Original language	English
Pages (from-to)	1807-1811
Number of pages	5
Journal	Journal of Nanoparticle Research
Volume	12
Issue number	5
DOIs	https://doi.org/10.1007/s11051-009-9738-3
State	Published - Jun 2010

Keywords

2-Mercaptoethanesulfonic acid
3-Mercaptopropionic acid
CystamineI
Gold
Monolayer-protected gold cluster (MPCs)
Nanoparticles
Thiol

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Preparation and comparison between different thiol-protected Au nanoparticles

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