Antipyrine derived Schiff base: A colurimetric sensor for Fe(III) and 'turn-on' fluorescent sensor for Al(III)
| Autor: | K. K. Aravindakshan, P.P. Soufeena |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Schiff base
Metal ions in aqueous solution Biophysics 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Fluorescence Atomic and Molecular Physics and Optics 0104 chemical sciences Solvent chemistry.chemical_compound chemistry Benzoin Methanol 0210 nano-technology Acetonitrile Stoichiometry Nuclear chemistry |
| Zdroj: | Journal of Luminescence. 205:400-405 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2018.09.025 |
| Popis: | A new Schiff base, 1,5-dimethyl-4-(2-hydroxy-1,2-diphenylethylideneamino)-2-phenylpyrazol-3-one (L) was synthesized by the condensation of 4-amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one (4-aminoantipyrine) with 2-hydroxy-1,2-di(phenyl)ethanone (benzoin). It was characterized by elemental analysis and spectroscopic techniques. The optical response of the compound, L towards various metal ions like Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Al3+, Mg2+, Ca2+, Ba2+, Pb2+, Cd2+ and Hg2+ was monitored in methanol solution. L showed a remarkable colourimetric response towards Fe3+ and fluorescence “turn-on” behavior towards Al3+. Binding with Fe3+ induced a “naked-eye” purple coloration under day light. The recognition of L with Al3+ was responsible for blue fluorescent emission at 463 nm. The UV–Visible and fluorescent spectral studies of L with different metal ions were consistent with the visual observation. Due to the transient nature of the complex formed between L and Fe3+ in methanol, the stability of the complex formed in an aprotic solvent, acetonitrile was also ascertained. The stoichiometry and association constant of the complex formed were calculated. |
| Databáze: | OpenAIRE |
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