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Thermal, Optical and Electrochemical Properties of Side‐Chain Azopyridine Polymers Complexed with Metalloporphyrins
Author(s) -
Dahmane Smail,
Lasia Andrzej,
Zhao Yue
Publication year - 2006
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200600143
Subject(s) - polymer , polymer chemistry , photoisomerization , chemistry , photochemistry , pyridine , supramolecular chemistry , thermal stability , side chain , supramolecular polymers , crystallography , organic chemistry , crystal structure , catalysis , isomerization
Summary: New multifunctional supramolecular polymers were obtained by complexing a side‐chain azopyridine polymer with ZnTPP and CoTPP via axial coordination between the pyridyl group and the transition metals of the metalloporphyrins. Thermal, optical and electrochemical properties of the complexes in the solid state at various molar ratios of metal/pyridine were characterized by means of DSC, TGA, UV‐vis spectroscopy and CV. On one hand, the results show that linking ZnTPP or CoTPP to the azopyridine polymer results in significant changes of its properties, such as an increase in the glass transition temperature and the thermal stability of the polymer, and a decrease in the trans ‐ cis photoisomerization of azopyridine moieties. On the other hand, both ZnTPP and CoTPP complexed with the polymer exhibit changes in their redox behaviors.Complexation via axial coordination between PAzPy and ZnTPP or CoTPP.