A phenolphthalein-based fluorescent probe for the sequential sensing of Al3+ and F- ions in aqueous medium and live cells

被引：51

作者：

Kong, Xiang-yu ^{[1
]}

Hou, Ling-Jie ^{[1
]}

Shao, Xiu-qing ^{[1
]}

Shuang, Shao-Min ^{[1
]}

Wang, Yu ^{[1
]}

Dong, Chuan ^{[1
]}

机构：

[1] Shanxi Univ, Inst Environm Sci, Sch Chem & Chem Engn, Taiyuan 030006, Shanxi, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 208卷

基金：

中国国家自然科学基金;

关键词：

Fluorescent probe; Sequential sensing; Aqueous medium; Cell imaging; SCHIFF-BASE; AL3+; CHEMOSENSOR; FLUORIDE; SENSOR;

D O I：

10.1016/j.saa.2018.09.064

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A novel fluorescent probe, phenolphthalein-dialdehyde-(2-pyridyl) hydrazone (L), for sequentially detecting Al3+ and F- in almost 100% aqueous medium was successfully designed and synthesized. The probe offers two binding pockets for Al3+ to form a 1:2 ligand/metal complex, leading to a significant fluorescence enhancement at 465 nm. Further, the in-situ formed L-Al complex acts as a secondary fluorescent chemosensor for F- by quenching the fluorescence of the complex with high selectivity. The detection limit for Al3+ and F- sensing is 228 nM and 0.13 pM, respectively, which are far below the World Health Organization (WHO) acceptable limits (7.41 pM for Al3+ ion and 79 AM for F ) in drinking water. The probe L was successfully applied to the detection of Al3+ and F- in cells using fluorescence microscopy. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：131 / 139

页数：9

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