Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7

Abstract Gold nanorods (Au NRs) based localized surface plasmon resonance (LSPR) sensors have been widely employed in various fields including biology, environment and food safety detection, but their size- and shape-dependent sensitivity limits their practical applications in sensing and biological...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Liping Song, Lei Zhang, Youju Huang, Liming Chen, Ganggang Zhang, Zheyu Shen, Jiawei Zhang, Zhidong Xiao, Tao Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/481dd19c6e3e40419367549bb21b749d
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:481dd19c6e3e40419367549bb21b749d
record_format	dspace
spelling	oai:doaj.org-article:481dd19c6e3e40419367549bb21b749d2021-12-02T16:07:44ZAmplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H710.1038/s41598-017-03495-12045-2322https://doaj.org/article/481dd19c6e3e40419367549bb21b749d2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03495-1https://doaj.org/toc/2045-2322Abstract Gold nanorods (Au NRs) based localized surface plasmon resonance (LSPR) sensors have been widely employed in various fields including biology, environment and food safety detection, but their size- and shape-dependent sensitivity limits their practical applications in sensing and biological detection. In our present work, we proposed an approach to maximally amplify the signal of Au NRs based LSPR sensing by coating an optimized thickness of mesoporous silica onto Au NRs. The plasmonic peaks of Au NRs@SiO2 with different shell thickness showed finely linear response to the change of surrounding refractive index. The optimized thickness of mesoporous silica of Au NRs@SiO2 not only provided high stability for LSPR sensor,but also displayed much higher sensitivity (390 nm/RIU) than values of Au NRs from previous reports. The obtained Au NRs@SiO2 based LSPR sensor was further used in practical application for selectively detection of the E. coli O157:H7, and the detection limit achieved 10 CFU, which is much lower than conventional methods such as electrochemical methods and lateral-flow immunochromatography.Liping SongLei ZhangYouju HuangLiming ChenGanggang ZhangZheyu ShenJiawei ZhangZhidong XiaoTao ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Liping Song Lei Zhang Youju Huang Liming Chen Ganggang Zhang Zheyu Shen Jiawei Zhang Zhidong Xiao Tao Chen Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
description	Abstract Gold nanorods (Au NRs) based localized surface plasmon resonance (LSPR) sensors have been widely employed in various fields including biology, environment and food safety detection, but their size- and shape-dependent sensitivity limits their practical applications in sensing and biological detection. In our present work, we proposed an approach to maximally amplify the signal of Au NRs based LSPR sensing by coating an optimized thickness of mesoporous silica onto Au NRs. The plasmonic peaks of Au NRs@SiO2 with different shell thickness showed finely linear response to the change of surrounding refractive index. The optimized thickness of mesoporous silica of Au NRs@SiO2 not only provided high stability for LSPR sensor,but also displayed much higher sensitivity (390 nm/RIU) than values of Au NRs from previous reports. The obtained Au NRs@SiO2 based LSPR sensor was further used in practical application for selectively detection of the E. coli O157:H7, and the detection limit achieved 10 CFU, which is much lower than conventional methods such as electrochemical methods and lateral-flow immunochromatography.
format	article
author	Liping Song Lei Zhang Youju Huang Liming Chen Ganggang Zhang Zheyu Shen Jiawei Zhang Zhidong Xiao Tao Chen
author_facet	Liping Song Lei Zhang Youju Huang Liming Chen Ganggang Zhang Zheyu Shen Jiawei Zhang Zhidong Xiao Tao Chen
author_sort	Liping Song
title	Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
title_short	Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
title_full	Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
title_fullStr	Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
title_full_unstemmed	Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
title_sort	amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of escherichia coli o157:h7
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/481dd19c6e3e40419367549bb21b749d
work_keys_str_mv	AT lipingsong amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT leizhang amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT youjuhuang amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT limingchen amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT ganggangzhang amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT zheyushen amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT jiaweizhang amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT zhidongxiao amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7 AT taochen amplifyingthesignaloflocalizedsurfaceplasmonresonancesensingforthesensitivedetectionofescherichiacolio157h7
_version_	1718384713775710208

Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7

Ejemplares similares