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The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing

Three different nanosensors with core-shell structures were fabricated by molecular self-assembly and evaporation techniques. Such closely packed nanoparticles exhibit fine optical properties which are useful for biochemical sensing. The refractive index sensitivity (RIS) of nanosensors was detected...

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Detalles Bibliográficos
Autores principales: Yang, Shaobo, Wu, Tengfei, Zhao, Xinhua, Li, Xingfei, Tan, Wenbin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4168510/
https://www.ncbi.nlm.nih.gov/pubmed/25057137
http://dx.doi.org/10.3390/s140713273
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author Yang, Shaobo
Wu, Tengfei
Zhao, Xinhua
Li, Xingfei
Tan, Wenbin
author_facet Yang, Shaobo
Wu, Tengfei
Zhao, Xinhua
Li, Xingfei
Tan, Wenbin
author_sort Yang, Shaobo
collection PubMed
description Three different nanosensors with core-shell structures were fabricated by molecular self-assembly and evaporation techniques. Such closely packed nanoparticles exhibit fine optical properties which are useful for biochemical sensing. The refractive index sensitivity (RIS) of nanosensors was detected by varying the refractive index of the surrounding medium and the decay length of nanosensors was investigated using a layer-by-layer polyelectrolyte multilayer assembly. The results showed that the thickness of the Au shell plays an important role in determining the RIS and the decay length. A system based on localized surface plasmon resonances (LSPR) sensing was constructed in our study. The core-shell nanosensors can detect 10 ng/mL atrazine solutions and are suitable for pesticide residue detection.
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spelling pubmed-41685102014-09-19 The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing Yang, Shaobo Wu, Tengfei Zhao, Xinhua Li, Xingfei Tan, Wenbin Sensors (Basel) Article Three different nanosensors with core-shell structures were fabricated by molecular self-assembly and evaporation techniques. Such closely packed nanoparticles exhibit fine optical properties which are useful for biochemical sensing. The refractive index sensitivity (RIS) of nanosensors was detected by varying the refractive index of the surrounding medium and the decay length of nanosensors was investigated using a layer-by-layer polyelectrolyte multilayer assembly. The results showed that the thickness of the Au shell plays an important role in determining the RIS and the decay length. A system based on localized surface plasmon resonances (LSPR) sensing was constructed in our study. The core-shell nanosensors can detect 10 ng/mL atrazine solutions and are suitable for pesticide residue detection. MDPI 2014-07-23 /pmc/articles/PMC4168510/ /pubmed/25057137 http://dx.doi.org/10.3390/s140713273 Text en © 2014 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 license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Yang, Shaobo
Wu, Tengfei
Zhao, Xinhua
Li, Xingfei
Tan, Wenbin
The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing
title The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing
title_full The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing
title_fullStr The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing
title_full_unstemmed The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing
title_short The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing
title_sort optical property of core-shell nanosensors and detection of atrazine based on localized surface plasmon resonance (lspr) sensing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4168510/
https://www.ncbi.nlm.nih.gov/pubmed/25057137
http://dx.doi.org/10.3390/s140713273
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