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
收藏
页码：332 / 337
页数：6
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