Macromolecules containing pendent cationic ...
|Title||Macromolecules containing pendent cationic cyclopentadienyliron moieties.|
|Author(s)||A. Abd-El-Aziz, E. Todd, P. Shipman|
|Journal||Section Title: Organometallic and Organometalloidal Compounds, Polymer News|
|Abstract||A review. This feature article describes the synthesis of various classes of monomers and polymers incorporating organoiron moieties. Poly-ethers incorporating Î·6-substituted-arene-Î·5-cyclopentadienyliron moieties were synthesized via metal-mediated nucleophilic arom. substitution reactions. Linear polymers incorporating both cationic and neutral organoiron units were prepd.; these polymers underwent two electrochem. processes, oxidn. of the neutral iron species occurred between 0.89 and 1.0 V and redn. of the cationic iron groups occurred between -1.10 and -1.45 V. Polynorbornenes, polymethacrylates, and polystyrenes were prepd. via radical and condensation polymn. of organoiron functionalized monomers. The incorporation of azo dyes into the polymers gave rise to a variety of colored materials that could be photobleached in the presence of hydrogen peroxide. The incorporation of benzothiazole-based dyes resulted in colored polymers with higher Î»max values than azobenzene-based dyes. Photolytic decoordination of the cationic cyclopentadienyliron moieties resulted in the formation of org. analogs or neutral polyferrocenes depending on the nature of the starting polymers. A no. of 3-arm star-shaped mols. were also prepd.; electrochem. studies showed that the inner and outer iron moieties are reduced at different potentials. [on SciFinder(R)]|
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