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Sculpted substrates for SERS

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
0301-7249
191-199
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.
51423b5f-bdb8-4851-8d50-472253ceb12c
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
9a674f60-8fac-4415-a048-35ed354c49ff
Abdelsalam, Mamdouh E.
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Bartlett, Phillip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
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, 191-199. (doi:10.1039/b508847j).

Record type: Article

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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More information

Published date: 2006
Keywords: enhanced raman-scattering, silver electrode, spectroscopy

Identifiers

Local EPrints ID: 44404
URI: http://eprints.soton.ac.uk/id/eprint/44404
ISSN: 0301-7249
PURE UUID: 443d6c83-3240-4fe9-a38c-bb17273c17cd
ORCID for Phillip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900
ORCID for Andrea E. Russell: ORCID iD orcid.org/0000-0002-8382-6443

Catalogue record

Date deposited: 06 Mar 2007
Last modified: 10 Dec 2019 01:56

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