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Nanostructured thin films as surface-enhanced Raman scattering substrates

  1. Stefania Mura1,2,*,
  2. Gianfranco Greppi4,
  3. Plinio Innocenzi5,
  4. Massimo Piccinini3,
  5. Cristiana Figus5,
  6. Maria Laura Marongiu4,
  7. Cunlan Guo2,
  8. Joseph Irudayaraj2

Article first published online: 22 OCT 2012

DOI: 10.1002/jrs.4151

Issue

Journal of Raman Spectroscopy

Journal of Raman Spectroscopy

Volume 44, Issue 1, pages 35–40, January 2013

Additional Information

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

Author Information

  1. 1

    Nucleo Ricerca Desertificazione, Università degli Studi di Sassari, Sassari, Italy

  2. 2

    Department of Agricultural and Biological Engineering and Bindley Bioscience Center, Purdue University, West Lafayette, IN, USA

  3. 3

    Porto Conte Ricerche, Alghero (SS), Italy

  4. 4

    Dipartimento di scienze zootecniche, Università degli Studi di Sassari, Sassari, Italy

  5. 5

    Materials Science and Nanotechnology Laboratory, D.A.P., CR-INSTM, Università di Sassari, Alghero (SS), Italy

* Stefania Mura, Porto Conte Ricerche, SP 55 Porto Conte/Capo Caccia, km 8.400 località Tramariglio, 07041 Alghero (SS), Italy.
E-mail: mura.stefania@gmail.com

Publication History

  1. Issue published online: 9 JAN 2013
  2. Article first published online: 22 OCT 2012
  3. Manuscript Accepted: 15 JUN 2012
  4. Manuscript Revised: 14 JUN 2012
  5. Manuscript Received: 2 DEC 2011

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Keywords:

  • nanomaterials;
  • SERS;
  • Raman;
  • 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.

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