N-1-(2-Mercaptoethyl)thymine modification of gold nanoparticles: a highly selective and sensitive colorimetric chemosensor for Hg2+

	N-1-(2-Mercaptoethyl)thymine modification of gold nanoparticles: a highly selective and sensitive colorimetric chemosensor for Hg2+
	Chen, Ling 1,3; Lou, Tingting 1,3; Yu, Chunwei 1,3; Kang, Qi 2; Chen, Lingxin1
发表期刊	ANALYST
	2011
卷号	136 期号:22 页码:4770-4773
英文摘要	An approach for mercury ions (Hg2+) sensing based on the Hg2+-induced aggregation of thymine (T)-SH-functionalized gold nanoparticles (AuNPs) has been reported. The T-SH ligands that we synthesized can easily be coupled to the surface of AuNPs through the Au-S bond and can recognize Hg2+ with high selectivity by forming a T-Hg-T complex with strong affinity. For the T-SH-functionalized AuNPs (T-S-AuNPs) sensor, upon addition of Hg2+, the formation of the T-Hg-T complex induces aggregation of T-S-AuNPs and results in a significant change of color and UV-Vis absorption spectra. Thus, our method can be used for the rapid, easy and reliable screening of Hg2+ in aqueous solution, with high sensitivity (2.8 nM) and selectivity over competing analytes. The developed method is successfully applied to the sensing of Hg2+ in real environmental samples.
文章类型	Article
收录类别	SCI
语种	英语
关键词[WOS]	PLASMON RESONANCE SPECTROSCOPY ; AQUEOUS-SOLUTION ; CATALYTIC BEACONS ; MERCURY(II) IONS ; BASE-PAIRS ; DNA ; THYMINE ; SENSOR ; REMEDIATION ; PROBE
研究领域[WOS]	Chemistry
WOS记录号	WOS:000296153200021
引用统计	被引频次：79[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/9251
专题	中国科学院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Shandong Normal Univ, Key Lab Mol & Nanomat Probes, Minist Educ China, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Ling,Lou, Tingting,Yu, Chunwei,et al. N-1-(2-Mercaptoethyl)thymine modification of gold nanoparticles: a highly selective and sensitive colorimetric chemosensor for Hg2+[J]. ANALYST,2011,136(22):4770-4773.
APA	Chen, Ling,Lou, Tingting,Yu, Chunwei,Kang, Qi,&Chen, Lingxin.(2011).N-1-(2-Mercaptoethyl)thymine modification of gold nanoparticles: a highly selective and sensitive colorimetric chemosensor for Hg2+.ANALYST,136(22),4770-4773.
MLA	Chen, Ling,et al."N-1-(2-Mercaptoethyl)thymine modification of gold nanoparticles: a highly selective and sensitive colorimetric chemosensor for Hg2+".ANALYST 136.22(2011):4770-4773.