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SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition
The Surface-Enhanced Raman Scattering (SERS) technique is utilized to fabricate sensors for gas detection due to its rapid detection speed and high sensitivity. However, gases with similar molecular structures are difficult to directly discriminate using SERS gas sensors because there are characteri...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8402296/ https://www.ncbi.nlm.nih.gov/pubmed/34450988 http://dx.doi.org/10.3390/s21165546 |
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author | Chen, Lin Guo, Hao Sassa, Fumihiro Chen, Bin Hayashi, Kenshi |
author_facet | Chen, Lin Guo, Hao Sassa, Fumihiro Chen, Bin Hayashi, Kenshi |
author_sort | Chen, Lin |
collection | PubMed |
description | The Surface-Enhanced Raman Scattering (SERS) technique is utilized to fabricate sensors for gas detection due to its rapid detection speed and high sensitivity. However, gases with similar molecular structures are difficult to directly discriminate using SERS gas sensors because there are characteristic peak overlaps in the Raman spectra. Here, we proposed a multiple SERS gas sensor matrix via a spin-coating functional polymer to enhance the gas recognition capability. Poly (acrylic acid) (PAA), Poly (methyl methacrylate) (PMMA) and Polydimethylsiloxane (PDMS) were employed to fabricate the polymer film. The high design flexibility of the two-layer film was realized by the layer-by-layer method with 2 one-layer films. The SERS gas sensor coated by different polymer films showed a distinct affinity to target gases. The principle component analysis (PCA) algorithm was used for the further clustering of gas molecules. Three target gases, phenethyl alcohol, acetophenone and anethole, were perfectly discriminated, as the characteristic variables in the response matrix constructed by the combination of gas responses obtained 3 one-layer and 3 two-layer film-coated sensors. This research provides a new SERS sensing approach for recognizing gases with similar molecular structures. |
format | Online Article Text |
id | pubmed-8402296 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84022962021-08-29 SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition Chen, Lin Guo, Hao Sassa, Fumihiro Chen, Bin Hayashi, Kenshi Sensors (Basel) Article The Surface-Enhanced Raman Scattering (SERS) technique is utilized to fabricate sensors for gas detection due to its rapid detection speed and high sensitivity. However, gases with similar molecular structures are difficult to directly discriminate using SERS gas sensors because there are characteristic peak overlaps in the Raman spectra. Here, we proposed a multiple SERS gas sensor matrix via a spin-coating functional polymer to enhance the gas recognition capability. Poly (acrylic acid) (PAA), Poly (methyl methacrylate) (PMMA) and Polydimethylsiloxane (PDMS) were employed to fabricate the polymer film. The high design flexibility of the two-layer film was realized by the layer-by-layer method with 2 one-layer films. The SERS gas sensor coated by different polymer films showed a distinct affinity to target gases. The principle component analysis (PCA) algorithm was used for the further clustering of gas molecules. Three target gases, phenethyl alcohol, acetophenone and anethole, were perfectly discriminated, as the characteristic variables in the response matrix constructed by the combination of gas responses obtained 3 one-layer and 3 two-layer film-coated sensors. This research provides a new SERS sensing approach for recognizing gases with similar molecular structures. MDPI 2021-08-18 /pmc/articles/PMC8402296/ /pubmed/34450988 http://dx.doi.org/10.3390/s21165546 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 Chen, Lin Guo, Hao Sassa, Fumihiro Chen, Bin Hayashi, Kenshi SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition |
title | SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition |
title_full | SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition |
title_fullStr | SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition |
title_full_unstemmed | SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition |
title_short | SERS Gas Sensors Based on Multiple Polymer Films with High Design Flexibility for Gas Recognition |
title_sort | sers gas sensors based on multiple polymer films with high design flexibility for gas recognition |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8402296/ https://www.ncbi.nlm.nih.gov/pubmed/34450988 http://dx.doi.org/10.3390/s21165546 |
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