Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars

Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars

Surface-Enhanced Raman Spectroscopy is a powerful technique that boosts the distinctive fingerprint signals of molecules, making them more accessible for analysis. It utilizes metallic nanoparticles, acting as amplifiers, to greatly enhance the signals emitted by the molecules. This study aimed to e...

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Autores principales: Santacruz-Gomez, Karla, López Durazo, Víctor Hugo, Gutiérrez Félix, Samaria Jhoana, Gutiérrez Velázquez, Andrés, Ángulo-Molina, Aracely
Formato: Online
Idioma:eng
Publicado em: Universida de Sonora 2023
Acesso em linha:https://epistemus.unison.mx/index.php/epistemus/article/view/315
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spelling oai:http:--epistemus.unison.mx:article-3152023-08-23T00:06:56Z Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars Optimizando sustratos de espectroscopía Raman mejorada en superficie con nanoesferas, nanorodillos y nanoestrellas de oro Santacruz-Gomez, Karla López Durazo, Víctor Hugo Gutiérrez Félix, Samaria Jhoana Gutiérrez Velázquez, Andrés Ángulo-Molina, Aracely gold nanoparticles localized surface plasmon SERS enhancement factor Nanopartículas de oro plasmon de superficie localizado SERS Factor de amplificación Surface-Enhanced Raman Spectroscopy is a powerful technique that boosts the distinctive fingerprint signals of molecules, making them more accessible for analysis. It utilizes metallic nanoparticles, acting as amplifiers, to greatly enhance the signals emitted by the molecules. This study aimed to explore the SERS potential of gold nanoparticles (AuNPs) with different geometries using a non-resonant molecule, 4-MBA. Nanospheres (14±2 nm), nanorods (11±2 nm x 50±7 nm) and nanostars (38±4 nm) were synthesized via the HAuCl4 reduction method. All three AuNP geometries exhibited a remarkable enhancement of the Raman signal of 4-MBA by a magnitude of 104. Notably, only gold nanorods and nanostars displayed localized surface plasmon within the biological window, making them highly suitable for biological sample analysis. Meanwhile, the application of gold nanospheres should be limited to chemical SERS detection. These findings confirm the potential use of these nanostructures as SERS substrates for studying molecules with low molar... La Espectroscopía Raman Mejorada en Superficie es una potente técnica que realza las señales distintivas de huella dactilar de las moléculas, haciéndolas más accesibles para su análisis. Utiliza nanopartículas metálicas, que actúan como amplificadores para mejorar, en gran medida, las señales emitidas por las moléculas. Este estudio tuvo como objetivo explorar el potencial de SERS de nanopartículas de oro (AuNPs) con diferentes geometrías utilizando una molécula no resonante, el 4-MBA. Se sintetizaron nanoesferas (14 ± 2 nm), nanorrodillos (11 ± 2 nm x 50 ± 7 nm) y nanoestrellas (38 ± 4 nm) mediante el método de reducción de HAuCl4. Las tres geometrías de AuNP mostraron una mejora notable en la señal Raman del 4-MBA en una magnitud de 104. Es importante destacar que solo los nanorrodillos y las nanoestrellas de oro presentaron resonancia de plasmón superficial localizada dentro de la ventana biológica, lo que las hace altamente adecuadas para... Universida de Sonora 2023-08-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Investigación application/pdf https://epistemus.unison.mx/index.php/epistemus/article/view/315 10.36790/epistemus.v18i35.315 EPISTEMUS; Vol. 18 No. 35 (2023): Issue No. 35 (In couse...) EPISTEMUS; Vol. 18 Núm. 35 (2023): Revista No. 35 (En curso...) 2007-8196 2007-4530 eng https://epistemus.unison.mx/index.php/epistemus/article/view/315/360 Derechos de autor 2023 EPISTEMUS https://creativecommons.org/licenses/by-nc-sa/4.0
institution Epistemus
collection OJS
language eng
format Online
author Santacruz-Gomez, Karla
López Durazo, Víctor Hugo
Gutiérrez Félix, Samaria Jhoana
Gutiérrez Velázquez, Andrés
Ángulo-Molina, Aracely
spellingShingle Santacruz-Gomez, Karla
López Durazo, Víctor Hugo
Gutiérrez Félix, Samaria Jhoana
Gutiérrez Velázquez, Andrés
Ángulo-Molina, Aracely
Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars
author_facet Santacruz-Gomez, Karla
López Durazo, Víctor Hugo
Gutiérrez Félix, Samaria Jhoana
Gutiérrez Velázquez, Andrés
Ángulo-Molina, Aracely
author_sort Santacruz-Gomez, Karla
title Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars
title_short Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars
title_full Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars
title_fullStr Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars
title_full_unstemmed Optimizing Surface-Enhanced Raman Spectroscopy Substrates with Gold Nanospheres, Nanorods and Nanostars
title_sort optimizing surface-enhanced raman spectroscopy substrates with gold nanospheres, nanorods and nanostars
description Surface-Enhanced Raman Spectroscopy is a powerful technique that boosts the distinctive fingerprint signals of molecules, making them more accessible for analysis. It utilizes metallic nanoparticles, acting as amplifiers, to greatly enhance the signals emitted by the molecules. This study aimed to explore the SERS potential of gold nanoparticles (AuNPs) with different geometries using a non-resonant molecule, 4-MBA. Nanospheres (14±2 nm), nanorods (11±2 nm x 50±7 nm) and nanostars (38±4 nm) were synthesized via the HAuCl4 reduction method. All three AuNP geometries exhibited a remarkable enhancement of the Raman signal of 4-MBA by a magnitude of 104. Notably, only gold nanorods and nanostars displayed localized surface plasmon within the biological window, making them highly suitable for biological sample analysis. Meanwhile, the application of gold nanospheres should be limited to chemical SERS detection. These findings confirm the potential use of these nanostructures as SERS substrates for studying molecules with low molar...
publisher Universida de Sonora
publishDate 2023
url https://epistemus.unison.mx/index.php/epistemus/article/view/315
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