Abstract
Urea based fluorescent chemosensor 1 was synthesized. Receptor 1 shows unique selectivity for the Fe3+ion and no such significant response was noticed with other metal ions (Cr3+, Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+, Pb2+ and Bi3+) in DMSO/H2O (50:50,v/v) semi-aqueous solution. The binding features have been established by absorption and fluorescence spectroscopic methods. The binding constant (K) values obtained from Benesi-Hildebrand, Scatchard and Connor plot for receptor 1 is (8.3 ± 0.3) × 103 M−1 and has good detection limit 0.7 μM. The stoichiometry of 1.Fe3+ complex was confirmed by mass spectroscopy and Job’s plot.
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Fegade, U., Sharma, H., Attarde, S. et al. Urea Based Dipodal Fluorescence Receptor for Sensing of Fe3+ Ion in Semi-Aqueous Medium. J Fluoresc 24, 27–37 (2014). https://doi.org/10.1007/s10895-013-1297-4
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DOI: https://doi.org/10.1007/s10895-013-1297-4