Synthesis, characterization and emission study of zinc(II) and cobalt(II) complexes: Bis(bidentate) iminophenols as zinc(II) selective fluorescence probes

被引：15

作者：

Chakraborty, Biswarup ^{[1
]}

Halder, Partha ^{[1
]}

Chakraborty, Sourav ^{[1
]}

Das, Oindrila ^{[1
]}

Paria, Sayantan ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Inorgan Chem, Kolkata 700032, India

来源：

INORGANICA CHIMICA ACTA | 2012年 / 387卷

关键词：

Iminophenol; Zinc; Fluorescence; Cobalt; Solid state structures; BINDING-PROTEIN; SCHIFF-BASES; SENSOR; CHEMOSENSORS; ZN2+; BIOLOGY; DESIGN; ZN(II); ION; RECOGNITION;

D O I：

10.1016/j.ica.2012.02.024

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two zinc(II) complexes, [Zn-2(II)(L-1)(2)] (1) and [Zn-2(II)(L-2)(2)] (2), and two cobalt(II) complexes, [Co-2(II)(L-1)(2)] (3) and [Co-2(II)(L-2)(2)] (4), (H2L1 = iminophenol derived from the condensation of 4-aminobenzylamine and salicyldehyde, H2L2 = Schiff-base of 4-aminobenzylamine and 3,5-di-tert-butylsalicyldehyde) supported by bis(N,O-bidentate) ligands have been synthesized and characterized. X-ray single crystal structures of 3 and 4 revealed the dimeric nature of the complexes with a 1:1 ratio of metal and ligand. The zinc(II) complexes have a very similar composition as established from different analytical and spectroscopic techniques. The iminophenols exhibit highly selective fluorescence enhancement with high quantum yield upon binding with Zn2+ in solution. A 50-fold enhancement of emission in zinc(II) complexes is observed with respect to free iminophenols. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：332 / 337

页数：6

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