1-(2-Methyl-5H-chromeno[2,3-b]pyridin-5-ylidene) hydrazone as fluorescent probes for selective zinc sensing in DMSO

被引：6

作者：

Nouri, Hela ^{[1
,2
]}

Cadiou, Cyril ^{[1
]}

Henry, Axelle ^{[1
]}

Dechamps-Olivier, Isabelle ^{[1
]}

Ternane, Riadh ^{[2
]}

Trabelsi-Ayadi, Malika ^{[2
]}

Lemercier, Gilles ^{[1
]}

Chuburu, Francoise ^{[1
]}

机构：

[1] UFR Sci, URCA Inst Chim Mol Reims, Grp Chim Coordinat, CNRS,UMR 7312, F-51687 Reims 2, France

[2] LACReSNE Univ Carthage, Fac Sci Bizerte, Zarzouna 7021, Tunisia

来源：

JOURNAL OF LUMINESCENCE | 2014年 / 148卷

关键词：

Macrocyclic ligands; Fluorescent probes; Transition metals; UV/vis spectroscopy; Fluorescence spectroscopy; Zinc; SENSORS;

D O I：

10.1016/j.jlumin.2013.12.027

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two methyl-chromeno-pyridinylidene hydrazone derivatives L1, a cyclen derivative, and L2 were studied as potential fluorescent OFF-ON sensors towards Zn2+ in DMSO. Upon addition of one equivalent of Zn2+, L1 fluorescence was quenched, but addition of a second equivalent of Zn2+ restored partially the signal. Therefore ZnL1 behaved as a OFF-ON sensor for zinc. By comparison, L2 behaved as a very sensitive probe for zinc. ZnL1 and L2 sensor efficiencies were correlated to Zn2+ coordination via the hydrazone moiety of the fluorophore, which prevented a photoinduced electron transfer (PET), and allowed an efficient CHelation-Enhanced Fluorescence (CHEF) effect. (C) 2013 Elsevier B.V. All rights reserved,

引用

页码：202 / 206

页数：5

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