Expeditious synthesis of water-soluble, monolayer-protected gold nanoparticles of controlled size and monolayer composition
Articolo
Data di Pubblicazione:
2008
Citazione:
Expeditious synthesis of water-soluble, monolayer-protected gold nanoparticles of controlled size and monolayer composition / P. Scrimin, F. Manea, L. Pasquato, C. Bindoli, L. Lay, S. Polizzi. - In: LANGMUIR. - ISSN 0743-7463. - 24:8(2008), pp. 4120-4124.
Abstract:
A protocol is reported for the preparation of water-soluble, thiol-protected Au nanoparticles (Au-MPC) where
dioctylamine is used as a stabilizing agent when the gold cluster is formed using the two-phase Brust and Schiffrin
procedure. The amount of amine controls the size of the nanoparticles in the 1.9-8.9 nm diameter range. The final
stabilization of the gold clusters by addition of functionalized thiols is performed under very mild conditions compatible
with most biomolecules. The procedure is suitable for a wide variety of functional groups present in the thiol and
allows one to use thiol mixtures with a precise control of their composition in the monolayer. As a proof of principle,
examples of nanoparticles protected with thiols comprising functional groups ranging from polyethers, saccharides,
polyamines and ammonium ions are reported.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
P. Scrimin, F. Manea, L. Pasquato, C. Bindoli, L. Lay, S. Polizzi
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