Dipodal Molecular Device as Fluorescent Sensor for Na(I) Detection
| Autor: | V. Dangi, M. Baral, B. K. Kanungo |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluorophore
Ligand Sodium Metal ions in aqueous solution 010401 analytical chemistry Inorganic chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Fluorescence Photoinduced electron transfer 0104 chemical sciences Ion Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium 0210 nano-technology Spectroscopy |
| Zdroj: | Journal of Applied Spectroscopy. 87:893-903 |
| ISSN: | 1573-8647 0021-9037 |
| DOI: | 10.1007/s10812-020-01086-z |
| Popis: | A novel dipodal fluorescent sensor, N1,N3-bis(2-(2,3,4-trihydroxybenzylidene)amino)ethylmalo namide (MEP), suitable for the practical measurement of sodium concentration has been successfully developed and characterized by several spectroscopic techniques. The design of the dipodal scaffold includes a central unit, spacer, and fluorophore moiety as structural key features. The fluorescence sensor MEP adopts a photoinduced electron transfer mechanism and shows excellent selectivity for Na(I) among other biologically and environmentally important metal ions, viz., Na(I), K(I), Al(III), Cr(III), Fe(III), Fe(II), Co(II), Ni(II), Cu(II), and Zn(II) in DMSO by demonstrating a remarkable enhancement in the fluorescence intensity from 345.5 to 705.5 a.u. at λmax = 532.9 nm. The 1:2 binding stoichiometry between the ligand and Na(I) ion was confirmed by Stern–Volmer and Hill plots. The association constant determined for the ligand with the sodium metal ion is found to be very high, 7.7 × 106 M–2, which may be attributed to the trapping of sodium ions into the pseudo cavities of the ligand created by interaction of the ligand and sodium ions. The studies explore potential applications of the ligand for Na(I) ions detection in environmental and industrial applications. |
| Databáze: | OpenAIRE |
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