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摘要
(E)-N ''-((1H-imidazol-2-yl)methylene)quinoline-2-carbohydrazide (H2L) is synthesized by the reaction of acid hydrazide and carbaldehyde. The probe has been characterized by spectroscopic data (FT-IR, UV-Vis, H-1 NMR) and is weakly emissive. The H2L selectively binds Zn2+ and upon irradiation at 331 nm in presence of large number of cations shows high intense emission (lambda(em), 575 nm) and serves as a "turn-on" fluorescence chemosensor. The limit of detection (LOD) for Zn2+ is 0.36 mu M. Formation of the 1 : 1 metal-to-ligand complex has been ascertained by Mass spectra and Job's plot.
- 出版日期2017-7
