Highly sensitive and cost-effective fluorescent turn-on sensors based on octamethylcalix[4]pyrrole receptor for the detection of fluoride anion

被引：16

作者：

Amharar, Sana ^{[1
]}

Aydogan, Abdullah ^{[1
]}

机构：

[1] Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkey

来源：

DYES AND PIGMENTS | 2022年 / 197卷

关键词：

Fluorescence indicator; Fluoride sensor; Displacement sensor; Calix[4]pyrrole; SELECTIVE RECOGNITION; WATER;

D O I：

10.1016/j.dyepig.2021.109918

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Cost-effective fluorescence turn-on indicator-displacement-assay (IDA) sensors based on octamethylcalix[4] pyrrole receptor and tetrabutylammonium salts of 4-methylumbelliferone and fluorescein indicators were developed for highly sensitive detection of fluoride anion. The IDA sensor assembly relies on the hydrogen bonding between calix[4]pyrrole and carboxylate units of indicators and further displacement replacement of receptors with target analyte. While all the sensors displayed rapid and selective sensitivity towards fluoride over the other anions, 4-methylumbelliferone based IDA system was also found to have a visual color change for the sensing of fluoride anion. The experimental results revealed that fluorescein-based IDA sensor could be used for the sensing of fluoride anion with a detection limit as low as 3.2 nM.

引用

页数：7

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