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

页码：78 / 83

页数：6

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