L. Prodi, M. Montalti, J. Bradshaw
Dec 1, 2001
Citations
0
Influential Citations
21
Citations
Journal
Journal of inclusion phenomena and macrocyclic chemistry
Abstract
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.