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A direct fluorescence-on chemo-sensor for selective recognition of Zn(II) by a lower rim 1,3-di-derivative of calix[4]arene possessing bis-{N-(2-hydroxynaphthyl-1-methylimine)} pendants

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Title A direct fluorescence-on chemo-sensor for selective recognition of Zn(II) by a lower rim 1,3-di-derivative of calix[4]arene possessing bis-{N-(2-hydroxynaphthyl-1-methylimine)} pendants
 
Creator DESSINGOU, JAYARAMAN
JOSEPH, ROYMON
RAO, CHEBROLU P
 
Subject fluorescence
augmented reality
 
Description The bis-{N-(2-hydroxynaphthyl-1-methylimine)} anchored 1,3-di-derivative of lower rim p-tert-butyl-calix[4]arene possessing a N2O2, N2O4 or N2O6 binding core was found to be selective for Zn(II) ions even at less-than-or-equals, slant60 ppb by eliciting fluorescence-on behaviour while the other ions, viz., Ti4+, VO2+, Cr3+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Mg2+, Cd2+ and Hg2+ caused no change in the fluorescence. The reaction between 1 and Zn2+ was found to be stoichiometric with the formation of a 1:1 complex; while H+ quenched the fluorescence of the complex, OH− restored it. The studies of the 1:1 isolated complexes of Zn2+, Ni2+ and Cu2+ augmented the results.
 
Publisher Elsevier
 
Date 2009-03-02T09:26:34Z
2011-11-25T18:11:36Z
2011-12-26T13:06:44Z
2011-12-27T05:54:44Z
2009-03-02T09:26:34Z
2011-11-25T18:11:36Z
2011-12-26T13:06:44Z
2011-12-27T05:54:44Z
2005
 
Type Article
 
Identifier Tetrahedron Letters 46(46), 7967-7971
0040-4039
http://dx.doi.org/10.1016/j.tetlet.2005.09.079
http://hdl.handle.net/10054/821
http://dspace.library.iitb.ac.in/xmlui/handle/10054/821
 
Language en