A turn-on fluorescent chemosensor for Zn2+ ions based on antipyrine schiff base

被引：90

作者：

Gupta, Vinod Kumar ^{[1
]}

Singh, Ashok Kumar ^{[1
]}

Kumawat, Lokesh Kumar ^{[1
]}

机构：

[1] Indian Inst Technol Roorkee, Dept Chem, Roorkee 247667, Uttar Pradesh, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 204卷

关键词：

Fluorescent chemosensor; 4-(4-Hydroxy-3-met hoxybenzylideneamino)-2; 3-Dimethyl-l-phenyl-1; 2-Dihydropyrazol-5-one (L1); Zinc ions; MEMBRANE POTENTIOMETRIC SENSOR; IMMOBILIZED AMBERLITE XAD-2; METAL-IONS; ZINC; COMPLEX; CADMIUM; FABRICATION; DESIGN; SMOKE;

D O I：

10.1016/j.snb.2014.07.128

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Antipyrine schiff bases 4-(4-hydroxy-3-methoxybenzylideneamino)-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (L1) was successfully synthesized and characterized. The complexation behavior of chemosensor with different metal ions including Zn2+ ions in methanolic solution was studied on UV-vis absorption spectra and Photofluorescent spectra. Results showed that the chemosensor (L1) exhibited 55 fold enhancements in fluorescence at 533 nm after adding Zn2+ ions. Such fluorescent responses could be detected by naked eye under UV-lamp. The limit of detection was calculated to be 10(-7) M by titration method. The chemosensor (L1) showed excellent selectivity fluorescent behavior in acidic pH range. The complex solution (L1-Zn2+) exhibited reversibility with EDTA. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：507 / 514

页数：8

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