A highly sensitive fluorescent chemosensor for selective detection of zinc (II) ion based on the oxadiazole derivative

被引：21

作者：

Lin, Lu ^{[1
]}

Wang, Dan ^{[1
]}

Chen, Si-Hong ^{[1
]}

Wang, Dun-Jia ^{[1
]}

Yin, Guo-Dong ^{[1
]}

机构：

[1] Hubei Normal Univ, Coll Chem & Chem Engn, Hubei Collaborat Innovat Ctr Rare Met Chem, Hubei Key Lab Pollutant Anal & Reuse Technol, Huangshi 435002, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2017年 / 174卷

基金：

中国国家自然科学基金;

关键词：

Fluorescent sensor; Zinc (II) ion detection; Selective; Oxadiazole derivative; SCHIFF-BASE; SENSOR; ZN2+; RECOGNITION; ANTIBACTERIAL; BIOLOGY; PEPTIDE; DISEASE; CELLS;

D O I：

10.1016/j.saa.2016.11.053

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A novel fluorescent chemosensor based on the oxadiazole, 2-(2-hydroxyphenyl)-5-(4-methoxyphenyl)-1,3,4-oxadiazole, was designed and synthesized. The interaction of the oxadiazole with different metal ions had been investigated through UV-vis absorption and fluorescence spectra in 9:1 (v/v) ethanol-water (pH = 7.0) solution. The oxadiazole showed a pronounced fluorescence enhancement at 430 nm upon addition of Zn2+ in aqueous solution, whereas it had no apparent interference from other metal ions. The results indicated that the oxadiazole possessed high selectivity and sensitivity to Zn2+ ion. The stoichiometric ratio between the oxadiazole and Zn2+ ion was calculated to be 2:1 by job plot experiment, meanwhile their binding modes was confirmed by H-1 NMR and mass spectrometry. Their association constant was determined to be 1.95 x 10(5) M-1 and the detection limit for Zn2+ ion was 6.14 x 10(-7) mol/L. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：272 / 278

页数：7

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