Zn2+ ion responsive fluorescent chemosensor probe of Thiophene-diocarbohydrazide derivatives

被引：21

作者：

Mathew, Merlin Mary ^{[1
]}

Sreekanth, Anandaram ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Chem, Tiruchirappalli 620015, Tamil Nadu, India

来源：

INORGANICA CHIMICA ACTA | 2021年 / 516卷

关键词：

Thiophene-dicarbohydrazide; Zn2+; Fluorescence enhancement; CHEF; Off-On fluorescence; Molecular logic gate; POTENTIAL APPLICATIONS; SELECTIVE DETECTION; SCHIFF-BASE; ZINC; SENSOR; RECOGNITION; HEALTH;

D O I：

10.1016/j.ica.2020.120149

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new fluorescent probe of Thiophene- dicarbohydrazide based chemosensor synthesized for Zn2+ ion detection and investigated well. It was found that the chemosensor highly emissive when its complexation with Zn2+ ion. This turn-on fluorescence recognition was premeditated in DMSO/H2O (6:4 v/v) medium. The binding constant was calculated and it found to be 1.15 x 10(4) M-1. The limit of detection (LOD) was calculated to be 1.51 x 10(-7) M which is well below the permissible level of Zn2+ (70 mu M) in drinking water. The 1:1 binding stoichiometry of the chemosensor HNTCH-Zn2+ complex was intended from Jobs' plot. The observed fluorescent enhancement turn-on emission can be delineated by chelation enhanced fluorescence mechanism. The reversibility and INHIBIT/IMPLICATION Logic gate behaviour were performed for HNTCH-Zn2+ complex with EDTA accordingly.

引用

页数：7

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