Historical organic dyes: a surface-enhanced Raman scattering (SERS) spectral database on Ag Lee–Meisel colloids aggregated by NaClO4
Version of Record online: 18 FEB 2011
Copyright © 2011 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 42, Issue 6, pages 1267–1281, June 2011
How to Cite
Bruni, S., Guglielmi, V. and Pozzi, F. (2011), Historical organic dyes: a surface-enhanced Raman scattering (SERS) spectral database on Ag Lee–Meisel colloids aggregated by NaClO4. J. Raman Spectrosc., 42: 1267–1281. doi: 10.1002/jrs.2872
- Issue online: 17 JUN 2011
- Version of Record online: 18 FEB 2011
- Manuscript Accepted: 10 NOV 2010
- Manuscript Received: 5 JUL 2010
- surface-enhanced Raman scattering spectroscopy;
- Ag colloids;
- sodium perchlorate;
- historical organic dyes
In the present study, several natural organic dyes used in antiquity, especially in textile dyeing, were analysed by surface-enhanced Raman scattering (SERS) spectroscopy, in order to build a wide database that could integrate the data previously published in the literature. In particular, we reported for the first time the SERS spectra of 11 dyes: dragon's blood, sandalwood, annatto, safflower yellow and red, old fustic, gamboge, catechu, kamala, aloe and sap green. Silver colloids (Ag colloids) prepared according to the Lee–Meisel procedure, i.e. by reduction of a silver nitrate (AgNO3) aqueous solution with trisodium citrate dihydrate, were used as substrate. As its efficiency had been tested in a previous work, sodium perchlorate (NaClO4) 1.8 M was again employed as aggregating agent, giving the best results when added to the silver nanoparticles after the analyte. Copyright © 2011 John Wiley & Sons, Ltd.