Gold organosols for multicomponent surface‐enhanced Raman spectroscopy analysis of paintings

Abstract

The methods for the synthesis of gold sols in chloroform have been developed.The efficiency of gold organic sol for studying real objects of painting and its advantage over traditional hydrosol was demonstrated. A new practical application of gold organosols is proposed-the use for analysis of paintings by surfaceenhanced Raman scattering that can help to identify the dyes and hydrophobic binders in one probe. In practice, the application of metallic organosols makes possible to substantially simplify the procedure for sample preparation. It was also shown that the intensity of the surface-enhanced Raman spectroscopy bands and the signal-to-noise ratios is improved with organosols in comparison with hydrosol. These results can contribute in the long term to the development of nondestructive approach to the analysis of works of painting.

Recent advances in linear and nonlinear Raman spectroscopy. Part XIV

“…Considering that many polymeric compounds follow similar degradation pathways, linseed oil is an excellent model material for wider research on SERS analysis for polymer degradation in artworks. Kulakovich et al [ 43 ] used gold organosols for multicomponent SERS analysis of paintings. They found that the efficiency of their method for studying real objects of painting had advantages over traditional hydrosols.…”