Selective and Sensitive Fluorescein-Benzothiazole Based Fluorescent Sensor for Zn2+ Ion in Aqueous Media

被引：0
作者：
Serkan Erdemir
Begum Tabakci
机构：
[1] Selcuk University,Science Faculty, Department of Chemistry
来源：
Journal of Fluorescence | 2017年 / 27卷
关键词：
Fluorescein; Benzothiazole; Sensor; Zinc; Turn on;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An efficient fluorescent sensor based on fluorescein-benzothiazole (FB) for Zn2+ ion was synthesized and characterized systematically. FB exhibited selective and sensitive recognition toward Zn2+ in MeCN-H2O (v/v = 2/1) over other cations due to the spirolactam ring-opening power of Zn2+. The complexation property of FB with Zn2+ ion was examined by 1H NMR, 13C NMR and FTIR experiments. The stoichiometric ratio of the FB-Zn2+ complex was determined from a Job plot to be 1:1. The binding constant (Ka) of Zn2+ binding to FB was found to be 4.22 × 104 M− 1, with a detection limit of 5.64 μM. In addition, the practical utility of FB was explored in the form of test strips.
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页码：2145 / 2152
页数：7
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