Magnesium is one of the most abundant metals available in the earth crust, and magnesium plays a major role in many biological processes, where anthropomorphic sources of magnesium from agriculture and industry have been associated with diseases such as metabolic syndrome and hypertension. We have developed a novel sensor for detecting Mg(II) ion at low concentrations. The anthraquinone incorporated bis (aza-crown ether), the target molecule (1 ), was successfully synthesized by reacting 1,8-bis(2-bromoethoxy)- 9,10-Anthracenedione and 2,2'-[1,2-Ethanediylbis(oxy)]diethanamine in the presence of NaI, Na2CO3 at 85 �C in acetonitrile for 4 hours. 1H NMR, 13C NMR, mass spectrometry, and elemental analysis were used to characterize the newly synthesized compound 1 . A fluorescence change of 1  was studied with 2 equivalents of recited metal cations which include most of the alkali, alkaline earth and transition metal cations in acetonitrile. Compound 1  showed excellent selectivity for Mg(II), and the Job's plot titration shows a 2:1 binding stoichiometry for 1  to Mg(II).

Novel bis (aza-crown ether) based sensor: Selective and sensitive for magnesium ion

247th National Meeting (2014)

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