Near-infrared fluorogenic switches for the detection of Hg(ii) ions: applications in real samples and living cells

被引：14

作者：

Gomathi, Asaithambi ^{[1
]}

Viswanathamurthi, Periasamy ^{[1
]}

机构：

[1] Periyar Univ, Dept Chem, Salem 636011, Tamil Nadu, India

来源：

ANALYTICAL METHODS | 2019年 / 11卷 / 21期

关键词：

RATIOMETRIC FLUORESCENT CHEMODOSIMETER; FAR-RED; AQUEOUS-SOLUTION; SI-RHODAMINE; MERCURY; PROBE; SENSORS; HG2+; DYES; RECOGNITION;

D O I：

10.1039/c9ay00241c

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A unique turn-on NIR (near infrared) fluorescent sensor 9-(2-carboxyphenyl)-6-(diethylamino)-4-(4(vinyloxy) benzylidene)-1,2,3,4-tetrahydroxanthylium (NIRM) specific for Hg2+ detection was designed and synthesized. Upon interaction with Hg2+, the probe NIRM exhibited considerable emission enhancement along with a large Stokes shift (> 110 nm). The detection limit of NIRM for Hg2+ ions was 3.2 nM, which was lower than the maximum permissible limit of Hg2+ in drinking water recommended by the United States Environmental Protection Agency (USEPA). Consequently, the novel fluorescent sensor NIRM could be used for the recognition of Hg2+ in water samples as well as in living cells.

引用

页码：2769 / 2777

页数：9

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