A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses
Surface-enhanced Raman spectroscopy is a powerful technique for the ultra-sensitive detection of organic analytes. In this paper, the preparation of SERS substrates based on silver nanorods (AgNRs) is proposed, exploiting a simple protocol which does not require complex procedures and/or sophisticat...
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MDPI AG
2024-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/22/1808 |
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| author | Margherita Longoni Sofia Zucca Silvia Bruni |
| author_facet | Margherita Longoni Sofia Zucca Silvia Bruni |
| author_sort | Margherita Longoni |
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| description | Surface-enhanced Raman spectroscopy is a powerful technique for the ultra-sensitive detection of organic analytes. In this paper, the preparation of SERS substrates based on silver nanorods (AgNRs) is proposed, exploiting a simple protocol which does not require complex procedures and/or sophisticated and expensive instrumentation. For this purpose, various syntheses of AgNRs were tested, and the best one for preparing the SERS active substrate proved to be the one which does not involve surfactants as nanoparticle stabilizers. The plasmonic properties of the selected substrate can be modified based on the concentration of the deposited nanoparticles, allowing for the experimentation of different excitation wavelengths. Positive results were obtained on reference solutions of three natural dyes of historical interest using both green exciting radiation (532 nm) and two near-infrared ones (785 and 850 nm; the latter is combined with the SSE™ technology for further fluorescence quenching). Furthermore, the substrates of AgNRs were found to be suitable for SERS measurements even in dry-state conditions, i.e., only exploiting the electromagnetic interaction between the nanostructured substrate and the dye molecules absorbed onto a wool fibre. |
| format | Article |
| id | doaj-art-460ded7e79d149b0a90b023be7fed3ca |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj-art-460ded7e79d149b0a90b023be7fed3ca2024-11-26T18:16:24ZengMDPI AGNanomaterials2079-49912024-11-011422180810.3390/nano14221808A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State AnalysesMargherita Longoni0Sofia Zucca1Silvia Bruni2Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, ItalyDipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, ItalyDipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, ItalySurface-enhanced Raman spectroscopy is a powerful technique for the ultra-sensitive detection of organic analytes. In this paper, the preparation of SERS substrates based on silver nanorods (AgNRs) is proposed, exploiting a simple protocol which does not require complex procedures and/or sophisticated and expensive instrumentation. For this purpose, various syntheses of AgNRs were tested, and the best one for preparing the SERS active substrate proved to be the one which does not involve surfactants as nanoparticle stabilizers. The plasmonic properties of the selected substrate can be modified based on the concentration of the deposited nanoparticles, allowing for the experimentation of different excitation wavelengths. Positive results were obtained on reference solutions of three natural dyes of historical interest using both green exciting radiation (532 nm) and two near-infrared ones (785 and 850 nm; the latter is combined with the SSE™ technology for further fluorescence quenching). Furthermore, the substrates of AgNRs were found to be suitable for SERS measurements even in dry-state conditions, i.e., only exploiting the electromagnetic interaction between the nanostructured substrate and the dye molecules absorbed onto a wool fibre.https://www.mdpi.com/2079-4991/14/22/1808SERS spectroscopysilver nanorodstuneable substratedrystateSSE™ Ramanhistorical natural dyes |
| spellingShingle | Margherita Longoni Sofia Zucca Silvia Bruni A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses Nanomaterials SERS spectroscopy silver nanorods tuneable substrate drystate SSE™ Raman historical natural dyes |
| title | A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses |
| title_full | A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses |
| title_fullStr | A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses |
| title_full_unstemmed | A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses |
| title_short | A Tuneable and Easy-to-Prepare SERS Substrate Based on Ag Nanorods: A Versatile Tool for Solution and Dry-State Analyses |
| title_sort | tuneable and easy to prepare sers substrate based on ag nanorods a versatile tool for solution and dry state analyses |
| topic | SERS spectroscopy silver nanorods tuneable substrate drystate SSE™ Raman historical natural dyes |
| url | https://www.mdpi.com/2079-4991/14/22/1808 |
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