Collect. Czech. Chem. Commun.
2007, 72, 121-128
https://doi.org/10.1135/cccc20070121
Optical Properties of Gold Nanoparticles Produced by the Assembly of Size-Selected Clusters: Covering the Full Visible Wavelength Range in the Smallest Particle Size Regime
Stefan Vajdaa,b,*, Gary P. Wiederrechta,b, Alexandre Bouheliera,b, George Y. Tikhonova, Nancy Tomczyka, Byeongdu Leec, Sönke Seifertc and Randall E. Winansc
a Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.
b Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, U.S.A.
c X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.
Abstract
The tunability of the optical properties of small gold nanoparticles assembled from size-selected Au6-10 clusters on the surface of indium-tin-oxide glass support was studied as a function of gold particle size and shape using UV-VIS and dark-field microscopy techniques. The size and shape of gold nanoparticles was determined by employing synchrotron X-ray scattering. The obtained spectra show that a 350 nm wavelength range is accessible by proper tuning the size and shape of the studied nanoparticles with 1-2.5 nm main size and asymmetric vs symmetric form.
Keywords: Gold nanoparticles; Gold clusters; Dark-field microscopy; GISAXS; Synchrotron X-ray scattering; UV-VIS spectroscopy; Size-selected cluster deposition.
References: 23 live references.
