Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/85620 |
Resumo: | Imaging wide-field surface plasmon resonance (SPR) microscopy sensors based on poly acrylic acid polyelectrolyte brushes (PAA PEBs) were designed to enhance the sensitivity of nano object detection. The switching behavior of the PAA PEBs against changes in the pH values was investigated by analyzing the chemical, morphological, optical, and electrical properties. At pH ~1, the brushes collapse on the surface with the dominance of carboxylic groups (COOH). Upon the increase in the pH to nine, the switching process completes, and the brushes swell from dissociating most of the COOH groups and converting them into COO− groups. The domination of the negatively charged COO− groups increases the electrostatic repulsion in the polymer chains and stretches the brushes. The sensitivity of the SPR sensing device was investigated using a theoretical approach, as well as experimental measurements. The signal-to-noise ratio for a Au layer increases from six to eighteen after coating with PAA PEBs. In addition, the linewidth of the recorded image decreases from six pixels to five pixels by using the Au-PAA layers, which results from the enhanced spatial resolution of the recorded images. Coating a Au-layer with PAA PEBs enhances the sensitivity of the SPR sensing device, and improves the spatial resolution of the recorded image. |
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Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applicationsImaging wide-field SPR microscopy sensorPolyacrylic acid (PAA)Polyelectrolyte brushes (PEBs)Imaging wide-field surface plasmon resonance (SPR) microscopy sensors based on poly acrylic acid polyelectrolyte brushes (PAA PEBs) were designed to enhance the sensitivity of nano object detection. The switching behavior of the PAA PEBs against changes in the pH values was investigated by analyzing the chemical, morphological, optical, and electrical properties. At pH ~1, the brushes collapse on the surface with the dominance of carboxylic groups (COOH). Upon the increase in the pH to nine, the switching process completes, and the brushes swell from dissociating most of the COOH groups and converting them into COO− groups. The domination of the negatively charged COO− groups increases the electrostatic repulsion in the polymer chains and stretches the brushes. The sensitivity of the SPR sensing device was investigated using a theoretical approach, as well as experimental measurements. The signal-to-noise ratio for a Au layer increases from six to eighteen after coating with PAA PEBs. In addition, the linewidth of the recorded image decreases from six pixels to five pixels by using the Au-PAA layers, which results from the enhanced spatial resolution of the recorded images. Coating a Au-layer with PAA PEBs enhances the sensitivity of the SPR sensing device, and improves the spatial resolution of the recorded image.The scientific support by the Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, the Senatsverwaltung für Wirtschaft, Technologie und Forschung des Landes Berlin, and the Bundesministerium für Bildung und Forschung is gratefully acknowledged. We also thank Ahmad A. Ahmad for helping our members use the thin films laboratory at the Jordan University of Science and Technology. This work was also supported by the German Research Association (DFG) within the Collaborative Research Centre 876 SFB 876 “Providing Information by Resource-Constrained Data Analysis”, project B2.Multidisciplinary Digital Publishing InstituteUniversidade do MinhoAl-Bataineh, Qais M.Telfah, Ahmad D.Shpacovitch, VictoriaTavares, C. J.Hergenröder, Roland2023-04-262023-04-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/85620engAl-Bataineh, Q.M.; Telfah, A.D.; Shpacovitch, V.; Tavares, C.J.; Hergenröder, R. Switchable Polyacrylic Acid Polyelectrolyte Brushes for Surface Plasmon Resonance Applications. Sensors 2023, 23, 4283. https://doi.org/10.3390/s230942831424-82201424-822010.3390/s2309428337177486https://www.mdpi.com/1424-8220/23/9/4283info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-22T01:16:04ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
title |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
spellingShingle |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications Al-Bataineh, Qais M. Imaging wide-field SPR microscopy sensor Polyacrylic acid (PAA) Polyelectrolyte brushes (PEBs) |
title_short |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
title_full |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
title_fullStr |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
title_full_unstemmed |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
title_sort |
Switchable polyacrylic acid polyelectrolyte brushes for surface plasmon resonance applications |
author |
Al-Bataineh, Qais M. |
author_facet |
Al-Bataineh, Qais M. Telfah, Ahmad D. Shpacovitch, Victoria Tavares, C. J. Hergenröder, Roland |
author_role |
author |
author2 |
Telfah, Ahmad D. Shpacovitch, Victoria Tavares, C. J. Hergenröder, Roland |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Al-Bataineh, Qais M. Telfah, Ahmad D. Shpacovitch, Victoria Tavares, C. J. Hergenröder, Roland |
dc.subject.por.fl_str_mv |
Imaging wide-field SPR microscopy sensor Polyacrylic acid (PAA) Polyelectrolyte brushes (PEBs) |
topic |
Imaging wide-field SPR microscopy sensor Polyacrylic acid (PAA) Polyelectrolyte brushes (PEBs) |
description |
Imaging wide-field surface plasmon resonance (SPR) microscopy sensors based on poly acrylic acid polyelectrolyte brushes (PAA PEBs) were designed to enhance the sensitivity of nano object detection. The switching behavior of the PAA PEBs against changes in the pH values was investigated by analyzing the chemical, morphological, optical, and electrical properties. At pH ~1, the brushes collapse on the surface with the dominance of carboxylic groups (COOH). Upon the increase in the pH to nine, the switching process completes, and the brushes swell from dissociating most of the COOH groups and converting them into COO− groups. The domination of the negatively charged COO− groups increases the electrostatic repulsion in the polymer chains and stretches the brushes. The sensitivity of the SPR sensing device was investigated using a theoretical approach, as well as experimental measurements. The signal-to-noise ratio for a Au layer increases from six to eighteen after coating with PAA PEBs. In addition, the linewidth of the recorded image decreases from six pixels to five pixels by using the Au-PAA layers, which results from the enhanced spatial resolution of the recorded images. Coating a Au-layer with PAA PEBs enhances the sensitivity of the SPR sensing device, and improves the spatial resolution of the recorded image. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-04-26 2023-04-26T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/85620 |
url |
https://hdl.handle.net/1822/85620 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Al-Bataineh, Q.M.; Telfah, A.D.; Shpacovitch, V.; Tavares, C.J.; Hergenröder, R. Switchable Polyacrylic Acid Polyelectrolyte Brushes for Surface Plasmon Resonance Applications. Sensors 2023, 23, 4283. https://doi.org/10.3390/s23094283 1424-8220 1424-8220 10.3390/s23094283 37177486 https://www.mdpi.com/1424-8220/23/9/4283 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777303874343796736 |