Design of polyaromatic ethers using ...
|Title||Design of polyaromatic ethers using cyclopentadienyliron complexes.|
|Author(s)||Alaa S. Abd-El-Aziz, Christine R. De Denus, Erin K. Todd, Shelly A. Bernardin|
|Abstract||Nucleophilic aromatic substitution of cyclopentadienyliron complexes of chloroarenes with oxygen-containing nucleophiles led to the isolation of a number of aromatic ether complexes (2, 5a−e) in very good yields. Reactions of these complexes with 1-naphthol, followed by removal of the cyclopentadienyliron moieties produced aromatic ether compounds with terminal naphthoxy groups (3, 7a−e). Polymerization of these monomers in the presence of ferric chloride gave the poly(aryl ethers) 4 and 8a−e. These materials were obtained with weight-average molecular weights up to 139 900 g/mol. Thermogravimetric analysis of the poly(aryl ethers) showed that these materials displayed no significant weight loss until 458−575 °C. The glass transition temperatures for these polymers ranged from 147 to 226 °C, as measured by differential scanning calorimetry.|
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