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Purification of dodecanethiol derivatised gold nanoparticles
Cecilia A Waters1, Allan J Mills, Kathleen A Johnson
1Centre for Nanoscale Science, Department of Chemistry, The University of Liverpool, Liverpool, UK L69 7ZD.
Chemical Communications (Cambridge, England)
|March 18, 2003
Abstract:
Monolayer protected gold nanoparticles synthesised by a two-phase method contain a significant amount of tetraoctylammonium bromide (TOABr), the quaternary ammonium salt used as the phase transfer reagent, as a persistently retained impurity. A simple purification protocol is described.