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Photo-physical behavior as chemosensor properties of anthracene-anchored 1,3-di-derivatives of lower rim calix[4]arene towards divalent transition metal ions

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Title Photo-physical behavior as chemosensor properties of anthracene-anchored 1,3-di-derivatives of lower rim calix[4]arene towards divalent transition metal ions
 
Creator AJEET KUMAR
AMJAD ALI
RAO, CHEBROLU P
 
Subject enhancement
fluorescence
metal ions
absorption spectra
 
Description Anthracene anchored 1,3-di-derivatives of lower rim p-tert-butyl-calix[4]arene were synthesized and characterized. These derivatives were subjected to the binding studies with the divalent metal ions, viz., Mg2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+ using fluorescence and absorption spectra. The imine moiety that is in conjugation with the anthryl unit is responsible for quenching the fluorescence in the absence of metal ion, however, in the presence of Fe2+ and Cu2+, the spectra showed very high enhancement in fluorescence intensity indicating that the lone pair present on the imine-N is involved in the metal ion binding and as a result the photo-induced electron transfer is prevented. Based on the photo-physical studies, it has been found that the anthracene derivative that is coupled with the calix[4]arene unit through an imine bond acts as a chemosensor for Fe2+ and Cu2+. The fluorescence studies are further augmented by the absorption spectra.
 
Publisher Elsevier
 
Date 2009-03-02T09:28:01Z
2011-11-25T18:15:06Z
2011-12-26T13:06:41Z
2011-12-27T05:54:42Z
2009-03-02T09:28:01Z
2011-11-25T18:15:06Z
2011-12-26T13:06:41Z
2011-12-27T05:54:42Z
2006
 
Type Article
 
Identifier Journal of Photochemistry and Photobiology A: Chemistry 177(2-3), 164-169
1010-6030
http://dx.doi.org/10.1016/j.jphotochem.2005.05.021
http://hdl.handle.net/10054/828
http://dspace.library.iitb.ac.in/xmlui/handle/10054/828
 
Language en