A SERS active gold nanostar dimer for mercury ion detection

被引：204
作者：
Ma, Wei [1 ]
Sun, Maozhong [1 ]
Xu, Liguang [1 ]
Wang, Libing [1 ]
Kuang, Hua [1 ]
Xu, Chuanlai [1 ]
机构：
[1] Jiangnan Univ, Sch Food Sci & Technol, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
来源：
CHEMICAL COMMUNICATIONS | 2013年 / 49卷 / 44期
基金：
中国国家自然科学基金;
关键词：
ENHANCED RAMAN-SCATTERING; DNA; NANOPARTICLES; SPECTROSCOPY; WATER; SENSOR; FOOD; HG2+; TOOL;
D O I：
10.1039/c3cc39087j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A self-assembled nanostar dimer based on the Hg2+-mediated T-T base pair of ssDNA has been developed as a SERS sensor for Hg2+ detection. The enormous enhancement of the electromagnetic field by the dimer structures facilitates extraordinary SERS intensity. The LOD is 0.8 pg mL(-1) and its linear range is 0.002 to 1 ng mL(-1).
引用
收藏
页码：4989 / 4991
页数：3
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