Rhodamine 6G-based Chemosensor for the Visual Detection of Cu2+ and Fluorescent Detection of Hg2+ in Water

被引：16

作者：

He Song ^{[1
]}

Liu Qiuchen ^{[1
]}

Li Yuanyuan ^{[1
]}

Wei Fangfang ^{[1
]}

Cai Songtao ^{[1
]}

Lu Yan ^{[1
]}

Zeng Xianshun ^{[1
]}

机构：

[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Key Lab Display Mat & Photoelect Devices, Minist Educ, Tianjin 300384, Peoples R China

来源：

CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2014年 / 30卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Rhodamine; 6G; Chemosensor; Cu2+; Hg2+; SELECTIVE FLUORESCENT; SENSOR; MERCURY; PROBE; ION; ENHANCEMENT; COPPER;

D O I：

10.1007/s40242-014-3364-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel water soluble chemosensor 1 based on rhodamine 6G spirolactam scaffold has been synthesized and characterized. Upon addition of a wide range of the environmentally and biologically relevant metal ions, chemosensor 1 shows a colorimetric selective Cu2+ recognition from colorless to pink confirmed by UV-Vis absorption spectral changes, while it also exhibits a fluorometric selective Hg2+ recognition by fluorescence spectrometry. An absorption enhancement factor over 17-fold with 1-Cu2+ complex and a fluorescent enhancement factor over 45-fold with 1-Hg2+ complex were observed. Their recognition mechanisms were assumed to be a 1:1 stoichiometry for 1-Cu2+ complex and a 1:2 stoichiometry for 1-Hg2+ complex, respectively, which were proposed to be different ligation leading to the ring-opening of rhodamine 6G spirolactam. Furthermore, the detection limits for Cu2+ or Hg2+ were 3.3x10(-8) or 1.7x10(-7) mol/L, respectively.

引用

页码：32 / 36

页数：5

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