U.S. flag

An official website of the United States government, Department of Justice.

Raman, SERS, and DFT of Mauve Dye: Adsorption on Ag Nanoparticles

NCJ Number
249406
Author(s)
M.V. Cafiamares, J.R. Lombardi
Date Published
June 2015
Length
7 pages
Annotation
In this study, the Raman and SERS spectra of the mauve dye, the first synthetic organic dyestuff to be manufactured industrially, and its components were obtained in order to determine the adsorption mechanism on Ag nanoparticles.
Abstract
The main components of this dye are mauveine A, B, B2, and C. These molecules show four nitrogen atoms in their structure; therefore, they can interact with the SERS substrate by four different sites. In the current study, the comparison of the Raman and SERS spectra of mauve dye revealed several differences in the intensity and position of the Raman bands. Thus, a chemical interaction between the dye and the Ag nanoparticles was concluded. DFT calculations of the four mauveine molecules were carried out to aid in the assignments of the vibrational normal modes. (Publisher abstract modified)
Date Published: June 1, 2015