| Literature DB >> 24291434 |
Umesh Fegade1, Ajnesh Singh2, G Krishna Chaitanya3, Narinder Singh2, Sanjay Attarde4, Anil Kuwar5.
Abstract
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 Fe(3+) in DMSO/H2O (8:2, v/v) solvent system over other commonly coexistent metal ions. The binding constant (Ka) of receptor with Fe(3+) 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.Entities:
Keywords: 1,1′-(4-Methylbenzene-1,3-diyl)bis[3-(2-sulfanylphenyl)urea]; Binding constant; Fe(3+) sensor; Fluorescence receptor; Metal ions
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Year: 2013 PMID： 24291434 DOI： 10.1016/j.saa.2013.11.007
Source DB: PubMed Journal: Spectrochim Acta A Mol Biomol Spectrosc ISSN： 1386-1425 Impact factor: 4.098