Specific colorimetric detection of Fe3+ ions in aqueous solution by squaraine-based chemosensor

被引：24

作者：

Liu, Xiaoqian ^{[1
]}

Li, Na ^{[1
]}

Xu, Min-Min ^{[2
]}

Wang, Jianhao ^{[1
]}

Jiang, Chunhui ^{[3
]}

Song, Guoqiang ^{[1
]}

Wang, Yong ^{[2
]}

机构：

[1] Changzhou Univ, Sch Pharmaceut Engn & Life Sci, Changzhou 213164, Jiangsu, Peoples R China

[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[3] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, 2 Mengxi Rd, Zhenjiang 212003, Jiangsu, Peoples R China

来源：

RSC ADVANCES | 2018年 / 8卷 / 61期

关键词：

IRON REGULATORY PROTEINS; FLUORESCENT CHEMOSENSOR; HIGH SELECTIVITY; PROBE; SENSOR; DESIGN; CU2+; ACID; RECOGNITION; HOMEOSTASIS;

D O I：

10.1039/c8ra07345g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new squaraine based chemosensor TSQ was developed for colorimetric detection of Fe3+ ions. A thymine moiety in TSQ was constructed to act as an ion acceptor. The sensor displayed an instant colorimetric response specific to Fe3+ over the other metal ions in 20% AcOH-H2O solution. The limit of detection was much lower than that of the environmental protection agency guideline (5.37 M) in drinking water. A 1:1 binding between TSQ and Fe3+ ion was evidenced by Job's plot measurement, ESI-MS and Fourier transform infrared (IR) measurements. Moreover, the proposed sensing mechanism of the receptor towards Fe3+ was strongly supported by DFT calculation. Finally, the sensor has proven to be suitable in real sample applications.

引用

页码：34860 / 34866

页数：7

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