This article is from the GISR part of the joint special issue on the European Conference on Nonlinear Optical Spectroscopy (ECONOS 2012) with Guest Editors Johannes Kiefer and Peter Radi and the II Italian Conference of the National Group of Raman Spectroscopy and Non-Linear Effects (GISR 2012) with Guest Editor Maria Grazia Giorgini.
SERS investigation on the adsorption and photoreaction of 4-nitroanisole in Ag hydrosols†
Article first published online: 6 MAR 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Special Issue: Joint special issue on the European Conference on Nonlinear Optical Spectroscopy (ECONOS 2012) and the II Italian Conference of the National Group of Raman Spectroscopy and Non-Linear Effects (GISR 2012)
Volume 44, Issue 10, pages 1416–1421, October 2013
How to Cite
Muniz-Miranda, M. (2013), SERS investigation on the adsorption and photoreaction of 4-nitroanisole in Ag hydrosols. J. Raman Spectrosc., 44: 1416–1421. doi: 10.1002/jrs.4236
- Issue published online: 22 OCT 2013
- Article first published online: 6 MAR 2013
- Manuscript Accepted: 27 NOV 2012
- Manuscript Revised: 8 NOV 2012
- Manuscript Received: 30 AUG 2012
- Ag colloid;
- push–pull molecule;
The adsorption of 4-nitroanisole on silver colloidal nanoparticles was investigated by surface-enhanced Raman spectroscopy (SERS). Actually, the chemical binding with a metal substrate may play a role in changing the electronic structure of this molecule, which can be considered a push–pull chromophore, because an internal charge-transfer occurs between methoxy and nitrogroup. A SERS signal could be detected only in chloride-activated silver colloids, but the spectrum recorded with green-light excitation was not related to adsorbed 4-nitroanisole, but to its azoderivative, formed by photoreduction of the nitrogroup on the surface of the silver substrate. Copyright © 2013 John Wiley & Sons, Ltd.