The role of the dielectric environment in surface-enhanced Raman scattering on the detection of a 4-nitrothiophenol monolayer
Article first published online: 19 JUN 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 44, Issue 7, pages 1010–1013, July 2013
How to Cite
Funke, S. and Wackerbarth, H. (2013), The role of the dielectric environment in surface-enhanced Raman scattering on the detection of a 4-nitrothiophenol monolayer. J. Raman Spectrosc., 44: 1010–1013. doi: 10.1002/jrs.4323
- Issue published online: 8 JUL 2013
- Article first published online: 19 JUN 2013
- Manuscript Accepted: 2 APR 2013
- Manuscript Revised: 8 FEB 2013
- Manuscript Received: 21 AUG 2012
- German Federal Ministry of Education and Research. Grant Number: 13N11772
- surface-enhanced Raman;
- dielectric properties
Nanotechnology enables the generation and characterization of novel surface-enhanced Raman scattering (SERS) substrates. In this study, we focus on the impact of the carrier material of the SERS active layer and hence the dielectric environment to the enhancement. Therefore, a self-assembled monolayer of 4-nitrothiophenol is immobilized on silver and gold particles substrates on a quartz carrier. The detection of the monolayer occurs through the quartz carrier and through air. For the former, an increase of the intensity of the SERS bands in the spectrum is observed compared to the latter. The magnitude of the increase is larger for gold than for silver. Calculations according to the theoretical model of the electromagnetic enhancement agree with our experimental data. The presented detection mode will stimulate the fabrication of novel SERS sensors. Copyright © 2013 John Wiley & Sons, Ltd.