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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Gold nanoparticles obtained by aqueous digestive ripening: Their application as X-ray contrast agents.
Journal of Colloid and Interface Science 2015 Februrary 2
A preparative protocol to synthesize large quantities of size-controlled gold nanoparticles (Au NPs), stabilized by CH3O-PEG5000-SH (PEG-SH) in aqueous medium, is reported. The combination of metal vapor synthesis (MVS) technique with digestive ripening process allowed to obtain PEGylated Au NPs with mean core particle size of 3.8nm and hydrodynamic diameters centered at 8.0nm which were effectively used as computed tomography (CT) contrast agents for in vivo experiments on mice. The surface functionalization together with the small hydrodynamic diameters of the engineered Au nanoparticles permitted their efficient renal clearance, still retaining a prolonged blood circulation and a stealth capability.
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