Abstract
The compounds L1, L2 and D1 based on phenanthroline Schiff base bearing chiral amino alcohol groups had been synthesized and demonstrated. The sensing ability of the compounds in the presence of metal cations (Li+, Na+, K+, Mg2+, Co2+, Mn2+, Zn2+, Cd2+, Hg2+, Al3+, Cr3+, Fe3+, Eu3+) was studied by fluorescent spectroscopy. The experimental results indicated that compounds L1 and D1 could act as selective fluorescent sensors for Cd2+, Zn2+ with fluorescence enhancement and for the Eu3+ ion with fluorescence quenching in aqueous solution. Additionally, the emission properties of the L1–Eu3+ complex could be applied as selective sensor to distinguish malate anion from other carboxylate anions in an aqueous solution.
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