Benzimidazole functionalized tripodal receptor for selective recognition of iodide

A novel tripodal fluorescent receptor with benzimidazole motifs as signaling unit is reported. The receptor can selectively bind iodide anion with drastic change in its fluorescence and UV/Vis spectra, while addition of other anions (F−, Cl−, Br−, H2PO4-, SO42-, CH3COO−, NO3- and CN−) does not show...

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Bibliographic Details
Published in:Tetrahedron letters 2012-08, Vol.53 (35), p.4754-4757
Main Authors: Kar, Chirantan, Basu, Arghya, Das, Gopal
Format: Article
Language:English
Subjects:
Anion receptor
Anions
Bonding
Fluorescence
Fluorescence spectroscopy
Iodide
Iodides
Receptors
Spectra
Tetrahedrons
Titration
UV/Vis spectroscopy
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Summary:A novel tripodal fluorescent receptor with benzimidazole motifs as signaling unit is reported. The receptor can selectively bind iodide anion with drastic change in its fluorescence and UV/Vis spectra, while addition of other anions (F−, Cl−, Br−, H2PO4-, SO42-, CH3COO−, NO3- and CN−) does not show any significant change. The formation of receptor–iodide hydrogen bonded complex is proved by NMR titration of the receptor in the presence of iodide anion.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2012.06.120