Facile photochemical synthesis of unprotected aqueous gold nanoparticles.
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.
McGilvray
Katherine L
KL
Department of Chemistry, University of Ottawa, Ottawa K1N 6N5, Canada.
Decan
Matthew R
MR
Wang
Dashan
D
Scaiano
Juan C
JC
D006046:Gold / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010777:Photochemistry; D013057:Spectrum Analysis
D006046:Gold