Microcapsules of PEGylated Gold Nanoparticles Prepared by Fluid−Fluid Interfacial Assembly
2007; American Chemical Society; Volume: 7; Issue: 2 Linguagem: Inglês
10.1021/nl062581h
ISSN1530-6992
AutoresElizabeth Glogowski, Ravisubhash Tangirala, Jinbo He, Thomas P. Russell, Todd Emrick,
Tópico(s)Gold and Silver Nanoparticles Synthesis and Applications
ResumoAmphiphilic, PEGylated gold nanoparticles, of approximately 2 nm average core diameter, were synthesized by reduction of hydrogen tetrachloroaurate in the presence of the ligand (1-mercaptoundec-11-yl)tetra(ethylene glycol). These PEGylated gold nanoparticles were found to assemble cleanly at the oil-water interface. This self-assembly process gave a microencapsulated oil phase, water as the continuous phase, and a monolayer of gold nanoparticles at the oil-water interface. The capsules could be cross-linked from the organic phase by reaction of the chain-end hydroxyl groups of the PEG ligands with suitable electrophiles such as terephthaloyl chloride.
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