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Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect

A layer of silver nanoplates, specifically synthesized with the desired localized surface plasmon resonance (LSPR) features, was grafted on amino-functionalized bulk glass surfaces to impart a double antibacterial action: (i) the well-known, long-term antibacterial effect based on the release of Ag(...

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Autores principales: D’Agostino, Agnese, Taglietti, Angelo, Desando, Roberto, Bini, Marcella, Patrini, Maddalena, Dacarro, Giacomo, Cucca, Lucia, Pallavicini, Piersandro, Grisoli, Pietro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5295197/
https://www.ncbi.nlm.nih.gov/pubmed/28336841
http://dx.doi.org/10.3390/nano7010007
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author D’Agostino, Agnese
Taglietti, Angelo
Desando, Roberto
Bini, Marcella
Patrini, Maddalena
Dacarro, Giacomo
Cucca, Lucia
Pallavicini, Piersandro
Grisoli, Pietro
author_facet D’Agostino, Agnese
Taglietti, Angelo
Desando, Roberto
Bini, Marcella
Patrini, Maddalena
Dacarro, Giacomo
Cucca, Lucia
Pallavicini, Piersandro
Grisoli, Pietro
author_sort D’Agostino, Agnese
collection PubMed
description A layer of silver nanoplates, specifically synthesized with the desired localized surface plasmon resonance (LSPR) features, was grafted on amino-functionalized bulk glass surfaces to impart a double antibacterial action: (i) the well-known, long-term antibacterial effect based on the release of Ag(+); (ii) an “on demand” action which can be switched on by the use of photo-thermal properties of silver nano-objects. Irradiation of these samples with a laser having a wavelength falling into the so called “therapeutic window” of the near infrared region allows the reinforcement, in the timescale of minutes, of the classical antibacterial effect of silver nanoparticles. We demonstrate how using the two actions allows for almost complete elimination of the population of two bacterial strains of representative Gram-positive and Gram-negative bacteria.
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spelling pubmed-52951972017-03-21 Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect D’Agostino, Agnese Taglietti, Angelo Desando, Roberto Bini, Marcella Patrini, Maddalena Dacarro, Giacomo Cucca, Lucia Pallavicini, Piersandro Grisoli, Pietro Nanomaterials (Basel) Article A layer of silver nanoplates, specifically synthesized with the desired localized surface plasmon resonance (LSPR) features, was grafted on amino-functionalized bulk glass surfaces to impart a double antibacterial action: (i) the well-known, long-term antibacterial effect based on the release of Ag(+); (ii) an “on demand” action which can be switched on by the use of photo-thermal properties of silver nano-objects. Irradiation of these samples with a laser having a wavelength falling into the so called “therapeutic window” of the near infrared region allows the reinforcement, in the timescale of minutes, of the classical antibacterial effect of silver nanoparticles. We demonstrate how using the two actions allows for almost complete elimination of the population of two bacterial strains of representative Gram-positive and Gram-negative bacteria. MDPI 2017-01-06 /pmc/articles/PMC5295197/ /pubmed/28336841 http://dx.doi.org/10.3390/nano7010007 Text en © 2017 by the authors; 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
D’Agostino, Agnese
Taglietti, Angelo
Desando, Roberto
Bini, Marcella
Patrini, Maddalena
Dacarro, Giacomo
Cucca, Lucia
Pallavicini, Piersandro
Grisoli, Pietro
Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect
title Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect
title_full Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect
title_fullStr Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect
title_full_unstemmed Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect
title_short Bulk Surfaces Coated with Triangular Silver Nanoplates: Antibacterial Action Based on Silver Release and Photo-Thermal Effect
title_sort bulk surfaces coated with triangular silver nanoplates: antibacterial action based on silver release and photo-thermal effect
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5295197/
https://www.ncbi.nlm.nih.gov/pubmed/28336841
http://dx.doi.org/10.3390/nano7010007
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