A new dibenzothiophene-based dual-channel chemosensor for cyanide with aggregation induced emission

被引：0

作者：

Zou, Qiqi ^{[1
]}

Tao, Furong ^{[1
]}

Xu, Zhen ^{[1
]}

Ding, Yunqiao ^{[1
]}

Tian, Yan ^{[1
]}

Cui, Yuezhi ^{[1
]}

机构：

[1] Qilu Univ Technol, Sch Chem & Pharmaceut Engn, Shandong Acad Sci, Jinan 250353, Shandong, Peoples R China

来源：

ANALYTICAL METHODS | 2019年 / 11卷 / 43期

基金：

美国国家科学基金会;

关键词：

HIGHLY SELECTIVE DETECTION; TURN-ON FLUORESCENT; NAKED-EYE DETECTION; SENSITIVE DETECTION; COLORIMETRIC PROBE; WATER; AIE; SENSOR; ANION; NANOPARTICLES;

D O I：

10.1039/c9ay01806a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new dibenzothiophene-based barbituric acid derivative (DTB) with an aggregation induced emission (AIE) effect was synthesized as a naked-eye colorimetric and fluorescent probe for CN-. The UV-vis spectra and fluorescence spectra of DTB in a DMSO/H2O mixture changed with different water fractions (f(w)). Nano-aggregates of DTB were formed with the strongest fluorescence emission when f(w) reached 99%. Furthermore, DTB expressed good selectivity and high sensitivity for CN- in 99% aqueous DMSO solution. The sensing mechanism of DTB for CN- was confirmed by H-1 NMR titration, HRMS spectra, Job's plot and DFT calculations. Furthermore, DTB detected CN- with a low detection limit (21.6 nM), wide pH range (4-10), high anti-interference ability and fast response time (10 s). Moreover, DTB-based test strips were prepared for CN- detection, and DTB could detect CN- in real water samples.

引用

页码：5553 / 5561

页数：9

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