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Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations

[Image: see text] Challenges investigating molecules on plasmonic nanostructures have limited understanding of these interactions. However, the chemically specific information in the surface-enhanced Raman scattering (SERS) spectrum can identify perturbations in the adsorbed molecules to provide ins...

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Autores principales: de Albuquerque, Carlos Diego L., Zoltowski, Chelsea M., Scarpitti, Brian T., Shoup, Deben N., Schultz, Zachary D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8700175/
https://www.ncbi.nlm.nih.gov/pubmed/34966910
http://dx.doi.org/10.1021/acsnanoscienceau.1c00031
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author de Albuquerque, Carlos Diego L.
Zoltowski, Chelsea M.
Scarpitti, Brian T.
Shoup, Deben N.
Schultz, Zachary D.
author_facet de Albuquerque, Carlos Diego L.
Zoltowski, Chelsea M.
Scarpitti, Brian T.
Shoup, Deben N.
Schultz, Zachary D.
author_sort de Albuquerque, Carlos Diego L.
collection PubMed
description [Image: see text] Challenges investigating molecules on plasmonic nanostructures have limited understanding of these interactions. However, the chemically specific information in the surface-enhanced Raman scattering (SERS) spectrum can identify perturbations in the adsorbed molecules to provide insight relevant to applications in sensing, catalysis, and energy conversion. Here, we demonstrate spectrally resolved SERS imaging, to simultaneously image and collect the SERS spectra from molecules adsorbed on individual nanoparticles. We observe intensity and frequency fluctuations in the SERS signal on the time scale of tens of milliseconds from n-mercaptobenzoic acid (MBA) adsorbed to gold nanoparticles. The SERS signal fluctuations correlate with density functional theory calculations of radicals generated by the interaction between MBA and plasmon-generated hot electrons. Applying localization microscopy to the data provides a super-resolution spectrally resolved map that indicates the plasmonic-induced molecular charging occurs on the extremities of the nanoparticles, where the localized electromagnetic field is reported to be most intense.
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spelling pubmed-87001752021-12-27 Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations de Albuquerque, Carlos Diego L. Zoltowski, Chelsea M. Scarpitti, Brian T. Shoup, Deben N. Schultz, Zachary D. ACS Nanosci Au [Image: see text] Challenges investigating molecules on plasmonic nanostructures have limited understanding of these interactions. However, the chemically specific information in the surface-enhanced Raman scattering (SERS) spectrum can identify perturbations in the adsorbed molecules to provide insight relevant to applications in sensing, catalysis, and energy conversion. Here, we demonstrate spectrally resolved SERS imaging, to simultaneously image and collect the SERS spectra from molecules adsorbed on individual nanoparticles. We observe intensity and frequency fluctuations in the SERS signal on the time scale of tens of milliseconds from n-mercaptobenzoic acid (MBA) adsorbed to gold nanoparticles. The SERS signal fluctuations correlate with density functional theory calculations of radicals generated by the interaction between MBA and plasmon-generated hot electrons. Applying localization microscopy to the data provides a super-resolution spectrally resolved map that indicates the plasmonic-induced molecular charging occurs on the extremities of the nanoparticles, where the localized electromagnetic field is reported to be most intense. American Chemical Society 2021-12-01 /pmc/articles/PMC8700175/ /pubmed/34966910 http://dx.doi.org/10.1021/acsnanoscienceau.1c00031 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle de Albuquerque, Carlos Diego L.
Zoltowski, Chelsea M.
Scarpitti, Brian T.
Shoup, Deben N.
Schultz, Zachary D.
Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations
title Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations
title_full Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations
title_fullStr Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations
title_full_unstemmed Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations
title_short Spectrally Resolved Surface-Enhanced Raman Scattering Imaging Reveals Plasmon-Mediated Chemical Transformations
title_sort spectrally resolved surface-enhanced raman scattering imaging reveals plasmon-mediated chemical transformations
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8700175/
https://www.ncbi.nlm.nih.gov/pubmed/34966910
http://dx.doi.org/10.1021/acsnanoscienceau.1c00031
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