Nanostructured thin films as surface-enhanced Raman scattering substrates

Stefania Mura; Gianfranco Greppi; Plinio Innocenzi; Massimo Piccinini; Cristiana Figus; Maria Laura Marongiu; Cunlan Guo; Joseph Irudayaraj

doi:10.1002/jrs.4151

Nanostructured thin films as surface-enhanced Raman scattering substrates

Stefania Mura, Gianfranco Greppi, Plinio Innocenzi, Massimo Piccinini, Cristiana Figus, Maria Laura Marongiu, Cunlan Guo, Joseph Irudayaraj

Research output: Contribution to journal › Article › peer-review

Abstract

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 Ag ⁰ 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.

Original language	English (US)
Pages (from-to)	35-40
Number of pages	6
Journal	Journal of Raman Spectroscopy
Volume	44
Issue number	1
DOIs	https://doi.org/10.1002/jrs.4151
State	Published - Jan 2013
Externally published	Yes

Keywords

Raman
SERS
mesoporous materials
nanomaterials
silver NPs

ASJC Scopus subject areas

General Materials Science
Spectroscopy

Online availability

10.1002/jrs.4151

Library availability

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abstract = "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 Ag 0 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.",

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AU - Mura, Stefania

AU - Greppi, Gianfranco

AU - Innocenzi, Plinio

AU - Piccinini, Massimo

AU - Figus, Cristiana

AU - Marongiu, Maria Laura

AU - Guo, Cunlan

AU - Irudayaraj, Joseph

PY - 2013/1

Y1 - 2013/1

N2 - 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 Ag 0 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.

AB - 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 Ag 0 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.

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KW - mesoporous materials

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KW - silver NPs

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Nanostructured thin films as surface-enhanced Raman scattering substrates

Abstract

Keywords

ASJC Scopus subject areas

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