A highly selective and sensitive on-off sensor for silver ions and cysteine by light scattering technique of DNA-functionalized gold nanoparticles

被引：79

作者：

Feng, Da-Qian ^{[2
]}

Liu, Guoliang ^{[2
]}

Zheng, Wenjie ^{[2
]}

Liu, Jie ^{[2
]}

Chen, Tianfeng ^{[2
]}

Li, Dan ^{[1
]}

机构：

[1] Shantou Univ, Dept Chem, Shantou 515063, Guangdong, Peoples R China

[2] Jinan Univ, Coll Life Sci & Technol, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2011年 / 47卷 / 30期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

COLORIMETRIC DETECTION; BASE-PAIR; ONE-STEP; RESONANCE; ASSAY; HG2+; HYBRIDIZATION; AGGREGATION; FLUORESCENT; AG+;

D O I：

10.1039/c1cc12377g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

DNA-functionalized gold nanoparticles are shown to act as a light-scattering switch. Ag+ ion turns on the switch through the DNA-Au NPs conjugates based on the formation of cytosine-Ag+-cytosine base pairs, whereas cysteine turns off the light-scattering signal because it competitively binds to Ag+

引用

页码：8557 / 8559

页数：3

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