Organoiron polyelectrolytes

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Title Organoiron polyelectrolytes: synthesis and characterization of cationic cyclopentadienyl iron complexes of polyaryl ether-imines.
Author(s) Alaa S. Abd-El-Aziz, T. Christopher Corkery, Erin K. Todd, Tarek H. Afifi, Guozhang Ma
Journal Journal of Inorganic and Organometallic Polymers,
Date 2003
Volume 13
Issue 3
Start page 113
End page 130
Abstract The synthesis of an aromatic ether complex of cyclopentadienyliron containing two terminal aldehyde groups was achieved via metal-mediated nucleophilic aromatic substitution reactions. This dialdehyde monomer was subsequently reacted with a variety of aliphatic and aromatic diamines to produce the corresponding soluble cationic organoiron polyether-imines. These cationic organometallic polymers were characterized using IR, 1H, and 13C NMR, viscosity and thermogravimetric analysis. Viscosity measurements showed that these polymers exhibited polyelectrolyte effects in DMSO solutions. Thermogravimetric analysis showed that decoordination of the iron moieties occurred at about 300°C for polymers with aliphatic spacers in their backbones, while the cyclopentadienyliron moieties were cleaved from the polymers with aromatic spacers in their backbones at about 200°C. Photolytic demetallation of the organoiron polymers resulted in the removal of the pendent cyclopentadienyliron moieties and allowed for the isolation of their organic analogs. While the organoiron polymers were soluble in polar organic solvents, the corresponding organic polymers exhibited very limited solubilities or were insoluble. The organic polymers had glass transition temperatures between 101 and 120°C
DOI 10.1023/A:1025895431515

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