Sculpted substrates for SERS
Sculpted substrates for SERS
Sculpted SERS-active substrates are prepared by assembling a closed packed monolayer of uniform polystyrene colloidal particles ( diameter 350 to 800 nm) onto an evaporated gold surface and then electrodepositing gold through this template to produce films with controlled thicknesses, measured as fractions of the sphere diameter, d. The resulting surfaces consist of a regular hexagonal array of interconnected spherical cross-section dishes. The role of localised plasmons in determining the SERS enhancement factor obtained for benzene thiol adsorbed onto the surfaces is then investigated by correlation of the UV-visible reflectance spectra, 400 to 900 nm, measured at the same positions on the substrate surfaces, with the SERS spectra. The results are interpreted in terms of the relative contributions of plasmons that are free to propagate across the top surface and those trapped within the dishes of the sculpted surface
enhanced raman-scattering, silver electrode, spectroscopy
191-199
Cintra, Suzanne
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Abdelsalam, Mamdouh E.
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Bartlett, Phillip N.
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Baumberg, Jeremy J.
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Kelf, Timothy A.
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Sugawara, Yoshihiro
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Russell, Andrea E.
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2006
Cintra, Suzanne
9a674f60-8fac-4415-a048-35ed354c49ff
Abdelsalam, Mamdouh E.
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Bartlett, Phillip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Baumberg, Jeremy J.
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Kelf, Timothy A.
97076129-a896-4fed-8646-0b6c54272a57
Sugawara, Yoshihiro
ff9d9d87-d80a-4158-87c8-06eb84d1cd36
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Cintra, Suzanne, Abdelsalam, Mamdouh E., Bartlett, Phillip N., Baumberg, Jeremy J., Kelf, Timothy A., Sugawara, Yoshihiro and Russell, Andrea E.
(2006)
Sculpted substrates for SERS.
Faraday Discussions, 132, .
(doi:10.1039/b508847j).
Abstract
Sculpted SERS-active substrates are prepared by assembling a closed packed monolayer of uniform polystyrene colloidal particles ( diameter 350 to 800 nm) onto an evaporated gold surface and then electrodepositing gold through this template to produce films with controlled thicknesses, measured as fractions of the sphere diameter, d. The resulting surfaces consist of a regular hexagonal array of interconnected spherical cross-section dishes. The role of localised plasmons in determining the SERS enhancement factor obtained for benzene thiol adsorbed onto the surfaces is then investigated by correlation of the UV-visible reflectance spectra, 400 to 900 nm, measured at the same positions on the substrate surfaces, with the SERS spectra. The results are interpreted in terms of the relative contributions of plasmons that are free to propagate across the top surface and those trapped within the dishes of the sculpted surface
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Published date: 2006
Keywords:
enhanced raman-scattering, silver electrode, spectroscopy
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Local EPrints ID: 44404
URI: http://eprints.soton.ac.uk/id/eprint/44404
ISSN: 0301-7249
PURE UUID: 443d6c83-3240-4fe9-a38c-bb17273c17cd
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Date deposited: 06 Mar 2007
Last modified: 16 Mar 2024 02:59
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Contributors
Author:
Suzanne Cintra
Author:
Mamdouh E. Abdelsalam
Author:
Jeremy J. Baumberg
Author:
Timothy A. Kelf
Author:
Yoshihiro Sugawara
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