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Extremely Stable Water-Soluble Ag Nanoparticles

R. C. Doty, T. R. Tshikhudo, and Mathias Brust, D. Fernig
Published 2005 · Materials Science

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A rationally designed peptide and a thioalkylated poly(ethylene glycol) are used to stabilize Ag nanoparticles in water. Particle aggregation and oxidation are prevented to such a degree that nanoparticle solutions are stable in the presence of high concentrations of NaCl and over a wide pH range. This opens the door for the use of Ag nanoparticles in biological applications.



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