Nanostructured thin films as surface-enhanced Raman scattering substrates
Article first published online: 22 OCT 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 44, Issue 1, pages 35–40, January 2013
How to Cite
Mura, S., Greppi, G., Innocenzi, P., Piccinini, M., Figus, C., Marongiu, M. L., Guo, C. and Irudayaraj, J. (2013), Nanostructured thin films as surface-enhanced Raman scattering substrates. J. Raman Spectrosc., 44: 35–40. doi: 10.1002/jrs.4151
- Issue published online: 9 JAN 2013
- Article first published online: 22 OCT 2012
- Manuscript Accepted: 15 JUN 2012
- Manuscript Revised: 14 JUN 2012
- Manuscript Received: 2 DEC 2011
- mesoporous materials;
- silver NPs
Nanoporous thin films with silver nanoparticles were synthesized with a bottom–up approach, and its potential as effective surface-enhanced Raman scattering (SERS) substrates was demonstrated. The use of mesoporous titania films as substrates allowed to control the growth of nanoparticles on the film surface. Atomic force microscopy measurements, Ultraviolet-visible and X-ray diffraction analysis confirmed the photoreduction of Ag+ to Ag0 with the formation of nanoparticles with crystallite dimensions of 32 to 36 nm. The new substrates allowed the detection of two analytes (rhodamine B isothiocyanate and cytochrome c), present in solutions at very low concentrations, highlighting their potential in SERS sensing. Reproducibility, homogeneity, enhancement factor of the substrate, consistency of results and detection limits were also assessed. Copyright © 2012 John Wiley & Sons, Ltd.