Sensitive and high laser damage threshold substrates for surface-enhanced Raman scattering based on gold and silver nanoparticles.

Content Provider	Europe PMC
Author	Mayr, Felix Zimmerleiter, Robert Farias, Patricia M. A. Bednorz, Mateusz Salinas, Yolanda Galembek, André Cardozo, Olavo D. F. Wielend, Dominik Oliveira, Dyego Milani, Raquel Brito‐Silva, Tania M. Brandstetter, Markus Padrón‐Hernández, Eduardo Burgholzer, Peter Stingl, Andreas Scharber, Markus C. Sariciftci, Niyazi Serdar
Abstract	AbstractSurface‐enhanced Raman scattering (SERS) is a sensitive and fast technique for sensing applications such as chemical trace analysis. However, a successful, high‐throughput practical implementation necessitates the availability of simple‐to‐use and economical SERS substrates. In this work, we present a robust, reproducible, flexible and yet cost‐effective SERS substrate suited for the sensitive detection of analytes at near‐infrared (NIR) excitation wavelengths. The fabrication is based on a simple dropcast deposition of silver or gold nanomaterials on an aluminium foil support, making the design suitable for mass production. The fabricated SERS substrates can withstand very high average Raman laser power of up to 400 mW in the NIR wavelength range while maintaining a linear signal response of the analyte. This enables a combined high signal enhancement potential provided by (i) the field enhancement via the localized surface plasmon resonance introduced by the noble metal nanomaterials and (ii) additional enhancement proportional to an increase of the applicable Raman laser power without causing the thermal decomposition of the analyte. The application of the SERS substrates for the trace detection of melamine and rhodamine 6G is demonstrated, which shows limits of detection smaller than 0.1 ppm and analytical enhancement factors on the order of 104 as compared to bare aluminium foil.
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Page Count	12
Volume Number	4
DOI	10.1002/ansa.202300033
PubMed Central reference number	PMC10989562
Issue Number	11-12
PubMed reference number	38715649
Journal	Analytical Science Advances [Anal Sci Adv]
e-ISSN	26285452
Language	English
Publisher	John Wiley and Sons Inc.
Publisher Date	2023-10-06
Publisher Place	Hoboken
Access Restriction	Open
Rights License	This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. © 2023 The Authors. Analytical Science Advances published by Wiley‐VCH GmbH.
Subject Keyword	gold nanoparticles melamine silver nanoplates surface‐enhanced Raman scattering trace chemical detection
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry