T-Hg2+-T-based satellite structured surface enhanced Raman scattering sensor for Hg2+ detection

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	T-Hg2+-T-based satellite structured surface enhanced Raman scattering sensor for Hg2+ detection
	Sun, Zhenli; Du, Jingjing; He, Kebin; Jing, Chuanyong
刊名	JOURNAL OF RAMAN SPECTROSCOPY
	2018-10-01
卷号	49 期号:10 页码:1575-1580
关键词	DNA aptamer Hg2+ magnetic microsphere satellite structure SERS
ISSN号	0377-0486
文献子类	Article
英文摘要	Mercury ion (Hg2+) exposure is a threat to human health. We report a plasmonic core-satellite Fe3O4@SiO2-Au (FA) hetero nanostructure for Hg2+ detection using surface enhanced Raman scattering based on the T-Hg2+-T strategy. The FA nanostructure was functionalized by a DNA aptamer, which was designed with Cy5 at the 5 end, and used as a Raman reporter to specifically bind to Hg2+ ions. In the presence of Hg2+, DNA formed a hairpin structure, bringing Cy5 close to the FA hotspots region, thus generating an enhanced Raman signal. The T-Hg2+-T complex formed the basis for the determination of trace Hg2+ with a detection limit lower than 5x10(-9)M, and the influence of other metal ions was found to be negligible. With high selectivity, sensitivity, and recyclability, this FA-DNA surface enhanced Raman scattering platform is a promising tool for field monitoring of Hg2+ ions.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41071]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Sun, Zhenli,Du, Jingjing,He, Kebin,et al. T-Hg2+-T-based satellite structured surface enhanced Raman scattering sensor for Hg2+ detection[J]. JOURNAL OF RAMAN SPECTROSCOPY,2018,49(10):1575-1580.
APA	Sun, Zhenli,Du, Jingjing,He, Kebin,&Jing, Chuanyong.(2018).T-Hg2+-T-based satellite structured surface enhanced Raman scattering sensor for Hg2+ detection.JOURNAL OF RAMAN SPECTROSCOPY,49(10),1575-1580.
MLA	Sun, Zhenli,et al."T-Hg2+-T-based satellite structured surface enhanced Raman scattering sensor for Hg2+ detection".JOURNAL OF RAMAN SPECTROSCOPY 49.10(2018):1575-1580.