A dual colorimetric chemosensor based on Schiff base for highly selective and simultaneous recognition of CN− and Sn2+
| Autor: | Pravin R. Dongare, Anil H. Gore, Balu D. Ajalkar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Detection limit
Schiff base 010405 organic chemistry Buffer solution 010402 general chemistry Highly selective 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound chemistry Materials Chemistry Proton NMR Phenol SN2 reaction Physical and Theoretical Chemistry Spectroscopy Nuclear chemistry |
| Zdroj: | Inorganica Chimica Acta. 502:119372 |
| ISSN: | 0020-1693 |
| Popis: | A new colorimetric chemosensor 2-methoxy-6-{(E)-[(4-methylphenyl)imino] methyl}-4-[(E)-(4-nitrophenyl)diazenyl] phenol (SZ) was designed and synthesized for simultaneous detection of CN− and Sn2+ in MeCN: bis-tris buffer solution. The sensor SZ showed quick and selective colorimetric response towards CN− and Sn2+ with a change in color from yellow to pink and colorless respectively without any interfering anions or cations. Meanwhile, the binding mode of SZ for CN− and Sn2+ were studied by 1H NMR, ESI-MS, FT-IR spectroscopy, Job’s plot analysis and DFT calculations. The detection limit of SZ towards CN− and Sn2+ was found to be 0.649 µmol/L and 0.754 µmol/L respectively which are lower than the WHO guidelines for drinking water. Furthermore, chemosensor SZ was successfully utilized as a colorimetric chemosensor for the detection of CN− and Sn2+. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect