Dependence on pH of the luminescent properties of metal ion complexes of 5-chloro-8-hydroxyquinoline appended diaza-18-crown-6

被引：28

作者：

Prodi, L

Montalti, M

Bradshaw, JS

Izatt, RM

Savage, PB

机构：

[1] Univ Bologna, Dipartimento Chim G Ciamician, I-40126 Bologna, Italy

[2] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA

来源：

JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY | 2001年 / 41卷 / 1-4期

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：

10.1023/A:1014490202475

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Luminescent properties of 5-chloro-8-hydroxyquinoline (CHQ) free and appended to the amines in diaza-18-crown-6 (A(2)18C6) were determined. These properties were compared to those of bivalent alkaline earth and post-transition metal ion complexes of the appended macrocycle (CHQ-A218C6). The luminescent properties were found to be pH dependent. In the pH range 3 to 7, CHQ-A(2)18C6 forms luminescent complexes with only Zn2+ and Cd2+. At higher pH values, luminescent complexes were formed with Mg2+, Ca2+, Sr2+, and Ba2+. No luminescent complex was formed by Hg2+ over the pH range studied. This lariat macrocycle could find application as a chemosensor for several of the metal ions studied.

引用

页码：123 / 127

页数：5