A highly selective ratiometric fluorescent chemosensor for Cu(II) based on dansyl-functionalized thiol stabilized silver nanoparticles

被引：50

作者：

Tharmaraj, Vairaperumal ^{[1
]}

Pitchumani, Kasi ^{[1
]}

机构：

[1] Madurai Kamaraj Univ, Sch Chem, Madurai 625021, Tamil Nadu, India

来源：

JOURNAL OF MATERIALS CHEMISTRY B | 2013年 / 1卷 / 14期

关键词：

BEARING; 2; CU2+; SENSOR; COPPER; CHARGE; DISEASE; PROTEIN; IONS;

D O I：

10.1039/c3tb00534h

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

A fluorescent chemosensor for Cu2+ ions based on dansyl-functionalized thiol stabilized silver nanoparticles containing 2-aminothiophenyl units as the Cu2+ binding sites is developed. A decrease in fluorescence at 497 nm and an increase in fluorescence at 410 nm with an isoemissive point at 445 nm upon the addition of Cu2+ ions is attributed to the formation of a Cu2+ complex in aqueous acetonitrile based on an energy transfer mechanism. This sensor has excellent sensitivity and selectivity over other metal ions and has a detection limit as low as 5.0 x 10(-10) mol L-1.

引用

页码：1962 / 1967

页数：6

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