A new lawsone azo-dye for optical sensing of Fe3+ and Cu2+ and their DFT study

被引：11
|
作者：
Sonawane, Mahendra [1 ]
Tayade, Kundan [1 ]
Sahoo, Suban K. [2 ]
Sawant, Chatur P. [3 ]
Kuwar, Anil [1 ]
机构：
[1] North Maharashtra Univ, Sch Chem Sci, Jalgaon, India
[2] SV Natl Inst Technol, Dept Appl Chem, Surat, India
[3] GT Patil Coll, Dept Chem, Nandurbar, India
来源：
JOURNAL OF COORDINATION CHEMISTRY | 2016年 / 69卷 / 18期
关键词：
Chemosensor; lawsone azo-dye; Cu2+; Fe3+; FLUORESCENT SENSORS; IRON; MECHANISMS; COPPER; CHEMOSENSOR; TOXICITY; RECEPTOR;
D O I：
10.1080/00958972.2016.1210801
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new lawsone-based azo-dye 2-hydroxy-3-((pyridin-2-ylmethyl)diazenyl) naphthalene-1,4-dione (1) was synthesized and applied for sensing of metal ions. Receptor 1 showed selective fluorescent and colorimetric response for the detection of Cu2+ and Fe3+ over other tested metal ions. The fluorescence intensity of 1 was significantly quenched allowing detection of Fe3+ and Cu2+ down to 0.61 and 6.06 mu M, respectively. The binding has been established by fluorescence spectroscopic method. Receptor 1 provided a 1 : 1 binding scaffold for recognition of Fe3+ and Cu2+ ions with the association constant of 3.33 x 10(6) and 3.33 x 10(5) M-1, respectively. The B3LYP/6-31G/LANL2DZ method was employed for the optimization of 1 and 1.Fe3+ and 1.Cu2+. [GRAPHICS]
引用
收藏
页码：2785 / 2792
页数：8
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