title: Highly selective and sensitive receptor for Fe3+ probing.
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.
authors.affiliation: School of Chemical Sciences, North Maharashtra University, Jalgaon 425001, MS, India; School of Environmental and Earth Sciences, North Maharashtra University, Jalgaon 425001, MS, India.
authors.forename: Umesh
authors.initials: U
authors.lastname: Fegade
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Ropar, Rupnagar 140001, Punjab, India.
authors.forename: Ajnesh
authors.initials: A
authors.lastname: Singh
authors.affiliation: School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431 606, MS, India.
authors.forename: G Krishna
authors.initials: GK
authors.lastname: Chaitanya
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Ropar, Rupnagar 140001, Punjab, India.
authors.forename: Narinder
authors.initials: N
authors.lastname: Singh
authors.affiliation: School of Environmental and Earth Sciences, North Maharashtra University, Jalgaon 425001, MS, India.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Attarde
authors.affiliation: School of Chemical Sciences, North Maharashtra University, Jalgaon 425001, MS, India. Electronic address: kuwaras@gmail.com.
authors.forename: Anil
authors.initials: A
authors.lastname: Kuwar
mesh_terms: D005456:Fluorescent Dyes; D007501:Iron / Q000032:analysis*; D008968:Molecular Conformation; D015336:Molecular Probe Techniques; D015335:Molecular Probes / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005456:Fluorescent Dyes; D015335:Molecular Probes; D007501:Iron
keywords: 1,1′-(4-Methylbenzene-1,3-diyl)bis[3-(2-sulfanylphenyl)urea]; Binding constant; Fe(3+) sensor; Fluorescence receptor; Metal ions