A naked-eye fluorescent sensor for copper(II) ions based on a naphthalene conjugate Bodipy dye
| Autor: | Ahmed Nuri Kursunlu, Canan Baslak |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Quenching (fluorescence) 010405 organic chemistry Chemistry Inorganic chemistry chemistry.chemical_element 010402 general chemistry 01 natural sciences Binding constant Copper Fluorescence 0104 chemical sciences chemistry.chemical_compound Naked eye Physical and Theoretical Chemistry BODIPY Acetonitrile |
| Zdroj: | Photochemical & Photobiological Sciences. 17:1091-1097 |
| ISSN: | 1474-9092 1474-905X |
| DOI: | 10.1039/c8pp00137e |
| Popis: | A novel naphthalene-Bodipy dye (N-Bodipy) was designed, prepared and characterized. N-Bodipy showed a selective and sensitive recognition toward Cu(ii) ions as a fluorescent antenna group in acetonitrile/water over other metal cations. The complexation between Cu(ii) ions and N-Bodipy gave a specific color change as well as caused fluorescence quenching under long-wavelength light (365 nm). The remarkable quenching effect in fluorescence intensity centered at 538 nm was only observed in the presence of copper(ii) ions. Moreover, the orange color of N-Bodipy solution turned pale-yellow depending on the complexation effect in daylight. The complex stoichiometry was determined using a Job's plot and it was found to be 2 : 1 (ligand/metal). The binding constant was calculated with the Benesi-Hildebrand equation to be 1.39 × 1010 M-1 and the detection limit was 1.28 μM (LOD = 3α/slope, α is the standard deviation) for Cu(ii). The data proved that the binding between N-Bodipy and Cu(ii) is chemically reversible. |
| Databáze: | OpenAIRE |
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