A Coumarin-Based Chromogenic Sensor for Transition-Metal Ions Showing Ion-Dependent Bathochromic Shift

被引：57

作者：

Lin, Weiying ^{[1
]}

Yuan, Lin ^{[1
]}

Cao, Xiaowei ^{[1
]}

Tan, Wen ^{[1
]}

Feng, Yanming ^{[1
]}

机构：

[1] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China

来源：

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY | 2008年 / 2008卷 / 29期

关键词：

Sensors; Transition metals; N; O ligands; Charge transfer; Coumarins;

D O I：

10.1002/ejoc.200800667

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Coumarin pyridyl ketone I was designed and synthesized as a new chromogenic sensor for transition-metal ions. Remarkably, the chemosensor showed ion discrimination by exhibiting different extents of bathochromic shifts: 118 nm for Cu2+, 80 nm for Ni2+, and 55 nm for Cd2+. This ion-dependent red-shift in the visible region allows the selective detection of these three transition-metal ions by the naked eye. Studies of reference compounds and IR and NMR spectroscopy revealed that the pyridyl ketone moiety was the metal-binding site, whereas the carbonyl group on the coumarin moiety did not participate in the metal-binding process. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

引用

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页码：4981 / 4987

页数：7

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