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

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2017专题

	Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7
	Huang, Youju; Chen, Tao; Xiao, Zhidong; Zhang, Jiawei; Shen, Zheyu; Zhang, Ganggang; Chen, Liming; Zhang, Lei; Song, Liping
刊名	SCIENTIFIC REPORTS
	2017
卷号	7 页码:3288
ISSN号	2045-2322
英文摘要	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.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13777]
专题	2017专题
推荐引用方式 GB/T 7714	Huang, Youju,Chen, Tao,Xiao, Zhidong,et al. Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7[J]. SCIENTIFIC REPORTS,2017,7:3288.
APA	Huang, Youju.,Chen, Tao.,Xiao, Zhidong.,Zhang, Jiawei.,Shen, Zheyu.,...&Song, Liping.(2017).Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7.SCIENTIFIC REPORTS,7,3288.
MLA	Huang, Youju,et al."Amplifying the signal of localized surface plasmon resonance sensing for the sensitive detection of Escherichia coli O157:H7".SCIENTIFIC REPORTS 7(2017):3288.