N-1-(2-Mercaptoethyl)thymine modification of gold nanoparticles: a highly selective and sensitive colorimetric chemosensor for Hg2+
Chen, Ling1,3; Lou, Tingting1,3; Yu, Chunwei1,3; Kang, Qi2; 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:73[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
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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.
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