Thermal, Optical and Electrochemical Properties of Side-Chain Azopyridine Polymers Complexed with Metalloporphyrins

✍ Scribed by Smail Dahmane; Andrzej Lasia; Yue Zhao

• Book ID: 102489139
• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 158 KB
• Volume: 207
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200600143

✦ Synopsis

Abstract

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.

magnified imageComplexation via axial coordination between PAzPy and ZnTPP or CoTPP.