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Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They have been extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification, and so on. Flo...

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Autores principales: Tsutsumanova, Gitchka G., Todorov, Neno D., Russev, Stoyan C., Abrashev, Miroslav V., Ivanov, Victor G., Lukoyanov, Alexey V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8706669/
https://www.ncbi.nlm.nih.gov/pubmed/34947532
http://dx.doi.org/10.3390/nano11123184
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author Tsutsumanova, Gitchka G.
Todorov, Neno D.
Russev, Stoyan C.
Abrashev, Miroslav V.
Ivanov, Victor G.
Lukoyanov, Alexey V.
author_facet Tsutsumanova, Gitchka G.
Todorov, Neno D.
Russev, Stoyan C.
Abrashev, Miroslav V.
Ivanov, Victor G.
Lukoyanov, Alexey V.
author_sort Tsutsumanova, Gitchka G.
collection PubMed
description Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They have been extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification, and so on. Flowerlike objects, due to their highly irregular surface, may act also as plasmonic materials, providing resonant coupling between optical waves and surface plasmon excitations. This fact allows us to infer the possibility to use micro- and nanoflowers as effective surface-enhanced Raman scattering (SERS) substrate materials. Here, we report on the design and Raman enhancement properties of silver flowerlike structures, deposited on aluminum surface. A simple and cost-effective fabrication method is described, which leads to SERS substrates of high developed surface area. The morphology of the silver flowers on a nanoscale is characterized by self-organized quasiperiodic stacks of nanosheets, which act as plasmonic cavity resonators. The substrates were tested against rhodamine-6G (R6G) water solutions of concentration varying between 10(−3) M and 10(−7) M. Optimal SERS enhancement factors of up to 10(5) were established at R6G concentrations in the 10(−6)–10(−7) M range.
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spelling pubmed-87066692021-12-25 Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy Tsutsumanova, Gitchka G. Todorov, Neno D. Russev, Stoyan C. Abrashev, Miroslav V. Ivanov, Victor G. Lukoyanov, Alexey V. Nanomaterials (Basel) Article Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They have been extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification, and so on. Flowerlike objects, due to their highly irregular surface, may act also as plasmonic materials, providing resonant coupling between optical waves and surface plasmon excitations. This fact allows us to infer the possibility to use micro- and nanoflowers as effective surface-enhanced Raman scattering (SERS) substrate materials. Here, we report on the design and Raman enhancement properties of silver flowerlike structures, deposited on aluminum surface. A simple and cost-effective fabrication method is described, which leads to SERS substrates of high developed surface area. The morphology of the silver flowers on a nanoscale is characterized by self-organized quasiperiodic stacks of nanosheets, which act as plasmonic cavity resonators. The substrates were tested against rhodamine-6G (R6G) water solutions of concentration varying between 10(−3) M and 10(−7) M. Optimal SERS enhancement factors of up to 10(5) were established at R6G concentrations in the 10(−6)–10(−7) M range. MDPI 2021-11-24 /pmc/articles/PMC8706669/ /pubmed/34947532 http://dx.doi.org/10.3390/nano11123184 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tsutsumanova, Gitchka G.
Todorov, Neno D.
Russev, Stoyan C.
Abrashev, Miroslav V.
Ivanov, Victor G.
Lukoyanov, Alexey V.
Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy
title Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy
title_full Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy
title_fullStr Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy
title_full_unstemmed Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy
title_short Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy
title_sort silver flowerlike structures for surface-enhanced raman spectroscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8706669/
https://www.ncbi.nlm.nih.gov/pubmed/34947532
http://dx.doi.org/10.3390/nano11123184
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