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

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

Mauve was the first synthetic organic dyestuff to be manufactured industrially. The main components of the 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 this study the Ra...

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Bibliographic Details
Published in:Journal of physical chemistry. C Vol. 119; no. 25; pp. 14297 - 14303
Main Authors: Cañamares, M. V, Lombardi, J. R
Format: Journal Article
Language:English
Published: American Chemical Society 25-06-2015
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Summary:Mauve was the first synthetic organic dyestuff to be manufactured industrially. The main components of the 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 this study the Raman and SERS spectra of the mauve and its components were obtained in order to determine the adsorption mechanism on Ag nanoparticles. 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.
ISSN:1932-7447
1932-7455
DOI:10.1021/acs.jpcc.5b02619