Gradient metal nanoislands as a unified surface enhanced Raman scattering and surface enhanced infrared absorption platform for analytics
Gkogkou D, Shaykhutdinov T, Kratz C, Oates TWH, Hildebrandt P, Weidinger IM, Ly KH, Essera N, Hinrichs K (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 144
Pages Range: 5271-5276
Journal Issue: 17
DOI: 10.1039/c9an00839j
Abstract
In the last few decades, the use of plasmonics in vibrational spectroscopy has expanded the scope of (bio)analytical investigations. Nevertheless, there is a demand for a combined platform that can be simultaneously efficient for Surface Enhanced Raman Scattering (SERS) and Surface Enhanced Infrared Absorption (SEIRA). Here, we present a solution on the basis of a plasmonic Ag nanoparticle layer with a thickness gradient. The optical resonance along the layer varies from the visible to the infrared range offering optimal and intermediate sites for SERS and SEIRA of the analyte molecule (mercaptobenzonitrile). Enhancement factors for the same mode were determined to be ca. 104 and 170 for SERS and SEIRA, respectively. We present a full optical and vibrational characterization and demonstrate further tunability. The platform resolves reproducibility and comparability issues by a combination of the two methods. It also offers individualized solutions for different investigation conditions, i.e. a choice between excitation wavelengths and resonant Raman molecules. The multiple applicabilities of the presented unifying substrate can contribute to the expansion of the vibrational spectroscopic field and to analytics.
Involved external institutions
Leibniz-Institut für Analytische Wissenschaften / Leibniz Institute for Analytical Sciences (ISAS)
Germany (DE)
Technische Universität Berlin
Germany (DE)
Technische Universität Dresden
Germany (DE)
Germany (DE)
Technische Universität Berlin
Germany (DE)
Technische Universität Dresden
Germany (DE)
How to cite
APA:
Gkogkou, D., Shaykhutdinov, T., Kratz, C., Oates, T.W.H., Hildebrandt, P., Weidinger, I.M.,... Hinrichs, K. (2019). Gradient metal nanoislands as a unified surface enhanced Raman scattering and surface enhanced infrared absorption platform for analytics. Analyst, 144(17), 5271-5276. https://doi.org/10.1039/c9an00839j
MLA:
Gkogkou, Dimitra, et al. "Gradient metal nanoislands as a unified surface enhanced Raman scattering and surface enhanced infrared absorption platform for analytics." Analyst 144.17 (2019): 5271-5276.
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