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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14078

Title: Synthesis, spectral and electrochemical properties of cyclotriphosphazene appended with six metalloporphyrins
Authors: RAO, MR
GHOSH, A
RAVIKANTH, M
Keywords: FERROCENYL DENDRIMERS
CRYSTAL-STRUCTURES
METAL-COMPLEXES
COORDINATION
PLATFORM
LIGANDS
REDOX
PORPHYRINS
CHEMISTRY
BEHAVIOR
Issue Date: 2011
Publisher: ELSEVIER SCIENCE SA
Citation: INORGANICA CHIMICA ACTA,372(1)436-441
Abstract: The metal derivatives (Co(II), Ni(II), Cu(II), Zn(II) and Sn(IV)) of hexaporphyrinato cyclotriphosphazene systems were prepared by treating the hexaporphyrin assembly on cyclotriphosphazene ring with the appropriate metal salt under standard metallation conditions. The complete metallation of all six porphyrin units in hexaporphyrin assembly required 10-12 h reflux as judged by the absorption spectroscopy. The metal derivatives were confirmed by molecular ion peak in mass spectra for all compounds. (31)P and (1)H NMR spectra for Ni(II), Zn(II) and Sn(IV) derivatives and ESR spectra for Cu(II) derivative also confirmed the complete metallation of all six porphyrin units. The hexametalloporphyrin assemblies are freely soluble in common organic solvents. The spectral, electrochemical and fluorescence studies indicate that the six porphyrin units in assemblies interact very weakly and retain their individual characteristic features in the ground and excited states. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ica.2011.03.021
http://dspace.library.iitb.ac.in/jspui/handle/100/14078
ISSN: 0020-1693
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