Label-free sensing of pH and silver nanoparticles using an "OR" logic gate

被引：30
作者：
Ma, Dik-Lung [1 ]
He, Hong-Zhang [1 ]
Ma, Victor Pui-Yan [1 ]
Chan, Daniel Shiu-Hin [1 ]
Leung, Ka-Ho [1 ]
Zhong, Hai-Jing [2 ,3 ]
Lu, Lihua [1 ]
Mergny, Jean-Louis [4 ]
Leung, Chung-Hang [2 ,3 ]
机构：
[1] Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China
[2] Univ Macau, Inst Chinese Med Sci, Macao Sar, Peoples R China
[3] Univ Macau, State Key Lab Qual Res Chinese Med, Macao Sar, Peoples R China
[4] Univ Bordeaux, Inst Europeen Chim & Biol, Lab ARNA, INSERM,U869, F-33600 Pessac, France
来源：
ANALYTICA CHIMICA ACTA | 2012年 / 733卷
关键词：
Label-free detection; Logic gate; Silver nanoparticle; Platinum(II) complex; Luminescent probe; CYCLOMETALATED PLATINUM(II) COMPLEXES; SWITCH-ON PROBE; LUMINESCENT PROBES; BASE-PAIRS; DNA; IONS; AG+; LIGANDS; DESIGN; RUTHENIUM(II);
D O I：
10.1016/j.aca.2012.04.041
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Many natural phenomena are associated with the presence of two or more separate variables. We report here an "OR" DNA logic gate based on a luminescent platinum(II) switch-on probe for silver nanoparticles and pH, both of which may be considered putative indicators of pollution. The modulation of metal complex/double-stranded DNA complex phosphorescence by Ag+ and H+ was used to construct a simple, rapid and label-free method for the label-free detection of pH and nanomolar Ag+ ions and nanoparticles in aqueous solutions with high selectivity. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：78 / 83
页数：6
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