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A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes

Shell-isolated nanoparticles (SHINs) have attracted increasing interest for non-interfering plasmonic enhanced sensing in fields such as materials science, biosensing, and in various electrochemical systems. The metallic core of these nanoparticles is isolated from the surrounding environment preven...

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Autores principales: Boccorh, Delali K., Macdonald, Peter A., Boyle, Colm W., Wain, Andrew J., Berlouis, Leonard E. A., Wark, Alastair W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416900/
https://www.ncbi.nlm.nih.gov/pubmed/36133494
http://dx.doi.org/10.1039/d1na00473e
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author Boccorh, Delali K.
Macdonald, Peter A.
Boyle, Colm W.
Wain, Andrew J.
Berlouis, Leonard E. A.
Wark, Alastair W.
author_facet Boccorh, Delali K.
Macdonald, Peter A.
Boyle, Colm W.
Wain, Andrew J.
Berlouis, Leonard E. A.
Wark, Alastair W.
author_sort Boccorh, Delali K.
collection PubMed
description Shell-isolated nanoparticles (SHINs) have attracted increasing interest for non-interfering plasmonic enhanced sensing in fields such as materials science, biosensing, and in various electrochemical systems. The metallic core of these nanoparticles is isolated from the surrounding environment preventing direct contact or chemical interaction with the metal surface, while still being close enough to enable localized surface plasmon enhancement of the Raman scattering signal from the analyte. This concept forms the basis of the shell isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) technique. To date, the vast majority of SHIN designs have focused on SiO(2) shells around spherical nanoparticle cores and there has been very limited published research considering alternatives. In this article, we introduce a new polymer-based approach which provides excellent control over the layer thickness and can be applied to plasmonic metal nanoparticles of various shapes and sizes without compromising the overall nanoparticle morphology. The SHIN layers are shown to exhibit excellent passivation properties and robustness in the case of gold nanosphere (AuNP) and anisotropic gold nanostar (AuNS) core shapes. In addition, in situ SHINERS spectro-electrochemistry measurements performed on both SHIN and bare Au nanoparticles demonstrate the utility of the SHIN coatings. Correlated confocal Raman and SEM mapping was achieved to clearly establish single nanoparticle SERS sensitivity. Finally, confocal in situ SERS mapping enabled visualisation of the redox related molecular structure changes occurring on an electrode surface in the vicinity of individual SHIN-coated nanoparticles.
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spelling pubmed-94169002022-09-20 A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes Boccorh, Delali K. Macdonald, Peter A. Boyle, Colm W. Wain, Andrew J. Berlouis, Leonard E. A. Wark, Alastair W. Nanoscale Adv Chemistry Shell-isolated nanoparticles (SHINs) have attracted increasing interest for non-interfering plasmonic enhanced sensing in fields such as materials science, biosensing, and in various electrochemical systems. The metallic core of these nanoparticles is isolated from the surrounding environment preventing direct contact or chemical interaction with the metal surface, while still being close enough to enable localized surface plasmon enhancement of the Raman scattering signal from the analyte. This concept forms the basis of the shell isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) technique. To date, the vast majority of SHIN designs have focused on SiO(2) shells around spherical nanoparticle cores and there has been very limited published research considering alternatives. In this article, we introduce a new polymer-based approach which provides excellent control over the layer thickness and can be applied to plasmonic metal nanoparticles of various shapes and sizes without compromising the overall nanoparticle morphology. The SHIN layers are shown to exhibit excellent passivation properties and robustness in the case of gold nanosphere (AuNP) and anisotropic gold nanostar (AuNS) core shapes. In addition, in situ SHINERS spectro-electrochemistry measurements performed on both SHIN and bare Au nanoparticles demonstrate the utility of the SHIN coatings. Correlated confocal Raman and SEM mapping was achieved to clearly establish single nanoparticle SERS sensitivity. Finally, confocal in situ SERS mapping enabled visualisation of the redox related molecular structure changes occurring on an electrode surface in the vicinity of individual SHIN-coated nanoparticles. RSC 2021-09-21 /pmc/articles/PMC9416900/ /pubmed/36133494 http://dx.doi.org/10.1039/d1na00473e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Boccorh, Delali K.
Macdonald, Peter A.
Boyle, Colm W.
Wain, Andrew J.
Berlouis, Leonard E. A.
Wark, Alastair W.
A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes
title A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes
title_full A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes
title_fullStr A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes
title_full_unstemmed A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes
title_short A universal polymer shell-isolated nanoparticle (SHIN) design for single particle spectro-electrochemical SERS sensing using different core shapes
title_sort universal polymer shell-isolated nanoparticle (shin) design for single particle spectro-electrochemical sers sensing using different core shapes
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416900/
https://www.ncbi.nlm.nih.gov/pubmed/36133494
http://dx.doi.org/10.1039/d1na00473e
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