Add time:09/26/2019 Source:infona.pl
Luminescent properties of 5-Chloro-8-hydroxyquinoline (cas 130-16-5) (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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