Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering

Double-shelled Au/Ag hollow nanoboxes with precisely controlled interior nanogaps (1 to 16 nm) were synthesized for gap-tunable surface-enhanced Raman scattering (SERS). The double-shelled nanoboxes were prepared via a two-step galvanic replacement reaction approach using Ag nanocubes as the templat...

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Autores principales: Zhang, Weiqing, Rahmani, Mohsen, Niu, Wenxin, Ravaine, Serge, Hong, Minghui, Lu, Xianmao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4323660/
https://www.ncbi.nlm.nih.gov/pubmed/25670352
http://dx.doi.org/10.1038/srep08382
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author Zhang, Weiqing
Rahmani, Mohsen
Niu, Wenxin
Ravaine, Serge
Hong, Minghui
Lu, Xianmao
author_facet Zhang, Weiqing
Rahmani, Mohsen
Niu, Wenxin
Ravaine, Serge
Hong, Minghui
Lu, Xianmao
author_sort Zhang, Weiqing
collection PubMed
description Double-shelled Au/Ag hollow nanoboxes with precisely controlled interior nanogaps (1 to 16 nm) were synthesized for gap-tunable surface-enhanced Raman scattering (SERS). The double-shelled nanoboxes were prepared via a two-step galvanic replacement reaction approach using Ag nanocubes as the templates, while 4-aminothiolphenol (4-ATP) as SERS probe molecules were loaded between the two shells. More than 10-fold enhancement of SERS is observed from the double-shelled nanoboxes than Ag nanocubes. In addition, the SERS of the double-shelled nanoboxes increase significantly with the decrease of gap size, consistent with the theoretical prediction that smaller gap size induces larger localized electromagnetic enhancement.
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spelling pubmed-43236602015-02-20 Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering Zhang, Weiqing Rahmani, Mohsen Niu, Wenxin Ravaine, Serge Hong, Minghui Lu, Xianmao Sci Rep Article Double-shelled Au/Ag hollow nanoboxes with precisely controlled interior nanogaps (1 to 16 nm) were synthesized for gap-tunable surface-enhanced Raman scattering (SERS). The double-shelled nanoboxes were prepared via a two-step galvanic replacement reaction approach using Ag nanocubes as the templates, while 4-aminothiolphenol (4-ATP) as SERS probe molecules were loaded between the two shells. More than 10-fold enhancement of SERS is observed from the double-shelled nanoboxes than Ag nanocubes. In addition, the SERS of the double-shelled nanoboxes increase significantly with the decrease of gap size, consistent with the theoretical prediction that smaller gap size induces larger localized electromagnetic enhancement. Nature Publishing Group 2015-02-11 /pmc/articles/PMC4323660/ /pubmed/25670352 http://dx.doi.org/10.1038/srep08382 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zhang, Weiqing
Rahmani, Mohsen
Niu, Wenxin
Ravaine, Serge
Hong, Minghui
Lu, Xianmao
Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering
title Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering
title_full Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering
title_fullStr Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering
title_full_unstemmed Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering
title_short Tuning Interior Nanogaps of Double-shelled Au/Ag Nanoboxes for Surface-Enhanced Raman Scattering
title_sort tuning interior nanogaps of double-shelled au/ag nanoboxes for surface-enhanced raman scattering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4323660/
https://www.ncbi.nlm.nih.gov/pubmed/25670352
http://dx.doi.org/10.1038/srep08382
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