One-phase, one-pot synthesis of Ag0 nanoparticles capped with alkanethiolate molecules has been optimized to easily achieve a pure product in quantitative yield. We report the synthesis of dodecanethiolate-capped silver particles and the chemophysical, structural, and morphologic characterization performed by way of UV−vis, 1H NMR, and X-ray photoelectron (XPS) spectroscopies, X-ray powder diffraction (XRD) and X-ray absorption fine structure analysis (XFAS), electron diffraction and high-resolution transmission electron microscopy (HR-TEM), and scanning and transmission electron microscopy (SEM and TEM). Depending on the molar ratio of the reagents (dodecylthiosulphate/Ag+), the mean Ag0 particle size DXRD is tuned from 4 to 3 nm with a narrow size distribution. The particles are highly soluble, very stable in organic solvents (hexane, toluene, dichloromethane, etc.), and resistant to oxidation; the hexane solution after one year at room temperature does not show any precipitation or formation of oxidation byproducts.
Mari, A., Imperatori, P., Marchegiani, G., Pilloni, L., Mezzi, A., Kaciulis, S., et al. (2010). High Yield Synthesis of Pure Alkanethiolate-Capped Silver Nanoparticles RID G-5137-2010 RID G-5252-2010. LANGMUIR, 26(19), 15561-15566 [10.1021/la102062p].
High Yield Synthesis of Pure Alkanethiolate-Capped Silver Nanoparticles RID G-5137-2010 RID G-5252-2010
MENEGHINI, CARLO;MOBILIO, Settimio;
2010-01-01
Abstract
One-phase, one-pot synthesis of Ag0 nanoparticles capped with alkanethiolate molecules has been optimized to easily achieve a pure product in quantitative yield. We report the synthesis of dodecanethiolate-capped silver particles and the chemophysical, structural, and morphologic characterization performed by way of UV−vis, 1H NMR, and X-ray photoelectron (XPS) spectroscopies, X-ray powder diffraction (XRD) and X-ray absorption fine structure analysis (XFAS), electron diffraction and high-resolution transmission electron microscopy (HR-TEM), and scanning and transmission electron microscopy (SEM and TEM). Depending on the molar ratio of the reagents (dodecylthiosulphate/Ag+), the mean Ag0 particle size DXRD is tuned from 4 to 3 nm with a narrow size distribution. The particles are highly soluble, very stable in organic solvents (hexane, toluene, dichloromethane, etc.), and resistant to oxidation; the hexane solution after one year at room temperature does not show any precipitation or formation of oxidation byproducts.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
