Small angle X-ray scattering studies on structures of alkylthiol stabilized-silver nanoparticles in solution

Abstract

Silver nanoparticles (SNPs), which were stabilized with various alkylthiols, were studied in detail with synchrotron small angle X-ray scattering, UV-Vis spectroscopy and transmission electron microscopy (TEM). UV spectra of SNPs capped with various alkylthiols showed the characteristic surface plasmon bands at similar to 450 nm. However, the spectral shapes of SNPs with relatively short butanethiols became weaker and asymmetrically broader in the longer wavelength region. Their nanostructures were deliberately characterized by small angle X-ray scattering analysis based on a hard sphere model and TEM results.