Dependence on pH of the Luminescent Properties of Metal Ion Complexes of 5-Chloro-8-hydroxyquinoline Appended Diaza-18-Crown-6

被引：0
作者：
Luca Prodi
Marco Montalti
Jerald S. Bradshaw
Reed M. Izatt
Paul B. Savage
机构：
[1] Universitá di Bologna,Dipartimento di Chimica ``G. Ciamician''
[2] Brigham Young University,Department of Chemistry and Biochemistry
[3] Brigham Young University,Department of Chemistry and Biochemistry
来源：
Journal of inclusion phenomena and macrocyclic chemistry | 2001年 / 41卷
关键词：
5-chloro-8-hydroxyquinoline appended diaza-18-crown-6; metal complexes; luminescence; fluorescence; pH dependence; alkaline earth and post-transition bivalent metal ions;
D O I：
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学科分类号：
摘要：
Luminescent properties of 5-chloro-8-hydroxyquinoline (CHQ) free and appended tothe amines in diaza-18-crown-6 (A218C6) were determined. These propertieswere compared to those of bivalent alkaline earth and post-transition metal ioncomplexes of the appended macrocycle (CHQ-A218C6). The luminescent properties were foundto be pH dependent. In the pH range 3 to 7, CHQ-A218C6 forms luminescent complexes withonly Zn2+ and Cd2+. At higher pH values, luminescent complexes wereformed with Mg2+, Ca2+, Sr2+, and Ba2+. No luminescent complex was formed by Hg2+ over the pH range studied. This lariat macrocycle could findapplication as a chemosensor for several of the metal ions studied.
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页码：123 / 127
页数：4
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