Abstract
Two bis urea based acyclic receptors (1 and 2) containing two pyridyl moieties with different spacers are synthesized. These receptors are further transformed to metallo-macrocyclic receptors (3 and 4) by coordinating with metal center through pyridine ring ‘N’. The binding-behavior as well as selectivity of the receptors towards anions upon metal coordinated cyclization is studied and the results are compared with parent acyclic receptors. Receptors 2 and 4 containing a naphthalene moiety as a spacer as well as a fluorophore behave as ‘on-off’ sensors towards anions.
Keywords: Anion recognition, fluorescence sensing, urea and acyclic receptors, fluorophore, 3-Aminopyridine, DMF, acetonitrile, FT-IR, HRMS, FAB, UV-vis titration, Fluorescence emission titration, Stern-Volmer plot, Fluorescence Quenching, DMSO, 13C NMR, 1,1'-(4,4'-methylenebis(4,1-phenylene))bis(3-(pyridin-3-yl)urea), 1,1'-(naphthalene-1,8-diyl)bis(3-(pyridin-3-yl)urea), 1,1'-(4,4'-methylenebis(4,1-phenylene))bis(3-(pyridin-3-yl)urea) palladium dichloride, 1,1'-(naphthalene-1,8-diyl)bis(3-(pyridin-3-yl)urea) palladium dichloride
Mini-Reviews in Organic Chemistry
Title: Metal Coordinated Urea Based Fluorescent Receptors for Anion Recognition
Volume: 8 Issue: 1
Author(s): Shyamaprosad Goswami and Subrata Jana
Affiliation:
Keywords: Anion recognition, fluorescence sensing, urea and acyclic receptors, fluorophore, 3-Aminopyridine, DMF, acetonitrile, FT-IR, HRMS, FAB, UV-vis titration, Fluorescence emission titration, Stern-Volmer plot, Fluorescence Quenching, DMSO, 13C NMR, 1,1'-(4,4'-methylenebis(4,1-phenylene))bis(3-(pyridin-3-yl)urea), 1,1'-(naphthalene-1,8-diyl)bis(3-(pyridin-3-yl)urea), 1,1'-(4,4'-methylenebis(4,1-phenylene))bis(3-(pyridin-3-yl)urea) palladium dichloride, 1,1'-(naphthalene-1,8-diyl)bis(3-(pyridin-3-yl)urea) palladium dichloride
Abstract: Two bis urea based acyclic receptors (1 and 2) containing two pyridyl moieties with different spacers are synthesized. These receptors are further transformed to metallo-macrocyclic receptors (3 and 4) by coordinating with metal center through pyridine ring ‘N’. The binding-behavior as well as selectivity of the receptors towards anions upon metal coordinated cyclization is studied and the results are compared with parent acyclic receptors. Receptors 2 and 4 containing a naphthalene moiety as a spacer as well as a fluorophore behave as ‘on-off’ sensors towards anions.
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Cite this article as:
Goswami Shyamaprosad and Jana Subrata, Metal Coordinated Urea Based Fluorescent Receptors for Anion Recognition, Mini-Reviews in Organic Chemistry 2011; 8 (1) . https://dx.doi.org/10.2174/157019311793979909
DOI https://dx.doi.org/10.2174/157019311793979909 |
Print ISSN 1570-193X |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6298 |
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