| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1230509 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2014 | 6 Pages |
•A new fluorescent urea and thiol based chemosensor was developed and synthesized.•Chemosensor showed excellent selectivity for Fe3+ ions over other interfering ions.•Chemosensor can detect Fe3+ up to 0.1 μM in semi-aqueous medium (DMSO/H2O, 8:2, v/v).•Experimental results have been supported by DFT calculations.
A new fluorescent receptor 1,1′-(4-methylbenzene-1,3-diyl)bis[3-(2-sulfanylphenyl)urea] (1) has been designed and synthesized. The receptor showed excellent selectivity for Fe3+ in DMSO/H2O (8:2, v/v) solvent system over other commonly coexistent metal ions. The binding constant (Ka) of receptor with Fe3+ was calculated to be 11,250 M−1, 12,970 M−1 and 12,970 M−1 using Benesi–Hildebrand, Scatchard and Connor plot, respectively. The experimental results have been further supported by the detailed DFT calculations.
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