Synthesis, spectral and electrochemical properties of cyclotriphosphazene appended with six metalloporphyrins
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Synthesis, spectral and electrochemical properties of cyclotriphosphazene appended with six metalloporphyrins
|
|
Creator |
RAO, MR
GHOSH, A RAVIKANTH, M |
|
Subject |
FERROCENYL DENDRIMERS
CRYSTAL-STRUCTURES METAL-COMPLEXES COORDINATION PLATFORM LIGANDS REDOX PORPHYRINS CHEMISTRY BEHAVIOR Phosphazenes Porphyrins Metallation Assemblies Electrochemistry Electron paramagnetic resonance |
|
Description |
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.
|
|
Publisher |
ELSEVIER SCIENCE SA
|
|
Date |
2012-06-26T06:59:28Z
2012-06-26T06:59:28Z 2011 |
|
Type |
Article
|
|
Identifier |
INORGANICA CHIMICA ACTA,372(1)436-441
0020-1693 http://dx.doi.org/10.1016/j.ica.2011.03.021 http://dspace.library.iitb.ac.in/jspui/handle/100/14078 |
|
Language |
English
|
|