LAUSR

Two novel salen based chemosensors were synthesized and identified by FT-IR, 1 H-NMR and Elemental analysis. We evaluated the selectivity and sensitivity of probe L1 and L2 toward zinc ions via UV-vis, Cyclic voltammetry and 1 H-NMR measurement. The finding suggested the selective and sensitive recognition toward zinc ions was more typical than the other metal ions. The Zn 2+ can be detected well even the concentration of the probes are low to 10 μM. The stoichiometries of the complexs formed between the probes and Zn 2+ are 1:1, as determined by Job’s method. And these probes showed distinctly different CV curves with Zn 2+ . 1 H-NMR research showed that the hydrogens in N=CHand OHare evidently up-field shift. These changes are due to the transform of N2O2 coordination plane of Schiff bases.