Cabello, Gema, Sazanovich, Igor V, Siachos, Ioannis, Bilton, Matthew 
ORCID: 0000-0002-0475-2942, Mehdi, Beata L, Neale, Alex R ORCID: 0000-0001-7675-5432 and Hardwick, Laurence J ORCID: 0000-0001-8796-685X
(2024)
Simultaneous Surface-Enhanced Raman Scattering with a Kerr Gate for Fluorescence Suppression.
The journal of physical chemistry letters, 15 (2).
pp. 608-615.
Abstract
The combination of surface-enhanced and Kerr-gated Raman spectroscopy for the enhancement of the Raman signal and suppression of fluorescence is reported. Surface-enhanced Raman scattering (SERS)-active gold substrates were demonstrated for the expansion of the surface generality of optical Kerr-gated Raman spectroscopy, broadening its applicability to the study of analytes that show a weak Raman signal in highly fluorescent media under (pre)resonant conditions. This approach is highlighted by the well-defined spectra of rhodamine 6G, Nile red, and Nile blue. The Raman spectra of fluorescent dyes were obtained only when SERS-active substrates were used in combination with the Kerr gate. To achieve enhancement of the weaker Raman scattering, Au films with different roughnesses or Au-core-shell-isolated nanoparticles (SHINs) were used. The use of SHINs enabled measurement of fluorescent dyes on non-SERS-active, optically flat Au, Cu, and Al substrates.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Bioengineering |
| Divisions: | Faculty of Science and Engineering > School of Engineering Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 24 Jan 2024 12:11 |
| Last Modified: | 14 Mar 2024 17:44 |
| DOI: | 10.1021/acs.jpclett.3c02926 |
| Open Access URL: | https://doi.org/10.1021/acs.jpclett.3c02926 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3177988 |
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