Facile photochemical synthesis of unprotected aqueous gold nanoparticles

Katherine L McGilvray; Matthew R Decan; Dashan Wang; Juan C Scaiano

doi:10.1021/ja066522h

Facile photochemical synthesis of unprotected aqueous gold nanoparticles

J Am Chem Soc. 2006 Dec 20;128(50):15980-1. doi: 10.1021/ja066522h.

Authors

Katherine L McGilvray¹, Matthew R Decan, Dashan Wang, Juan C Scaiano

Affiliation

¹ Department of Chemistry, University of Ottawa, Ottawa K1N 6N5, Canada.

PMID: 17165719
DOI: 10.1021/ja066522h

Abstract

Aqueous, unprotected gold nanoparticles were prepared from HAuCl4 using a water-soluble benzoin (Irgacure-2959) as a photochemical source of strongly reducing ketyl radicals. This rapid method provides spatiotemporal control of nanoparticle generation, while light intensity can be used to control particle size. The particles are stable for months and do not require any of the conventional (S, N, or P) stabilizing ligands, although these can be readily incorporated if required.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Gold / chemistry*
Microscopy, Electron, Transmission
Molecular Structure
Nanoparticles / chemistry*
Nanoparticles / ultrastructure*
Photochemistry*
Spectrum Analysis

Substances

Gold