ω-Thioacetylalkylphosphonium salts: Precursors for the preparation of phosphonium-functionalised gold nanoparticles
摘要:
Two new omega-thioacetylalkylphosphonium salts that function as masked cationic alkanethiolate ligands for the stabilisation of gold nanoparticles have been prepared. Both (3-thioacetylpropyl) triphenylphosphonium bromide and (6-thioacetylhexyl) triphenylphosphonium bromide were shown to form water-soluble gold nanoparticles of ca. 5-10 nm in size that are stable for up to six months. The related (3-thioacetylpropyl) diphenylphosphine oxide was also prepared but did not act as a stabilising ligand in gold nanoparticle formation. (C) 2008 Elsevier B. V. All rights reserved.