Wen-Yao Huang, M. Y. Chang, Yu-Kai Han
Dec 15, 2010
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Influential Citations
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Journal
Journal of Polymer Science Part A
Abstract
Four novel 2-trifluoromethyl-activated bisfluoro monomers have been synthesized successfully using a Suzuki-coupling reaction of 3-trifluoromethyl-4-fluoro phenyl boronic acid with 2,7-dibromofluorene with varied pendants. Four monomers were converted to a series of fluorene-based poly(arylene ether)s with pendants by nucleophilic displacement of the fluorine atoms on the terminal benzene ring with 4,4′-hexafluoroisopropylidenediphenol. The polymers obtained by displacement of the fluorine atoms, exhibit weight-average molecular weight up to 9.89 × 104 g/mol in GPC. Thermal analysis studies indicated that these polymers did not show melting endotherms but did show relatively high Tg values up to 270 °C in DSC and outstanding thermal stability up to 532 °C for 5% weight loss in TGA in a nitrogen atmosphere. The polymers are soluble in a wide range of organic solvents: THF, CHCl3, NMP, DMAc, DMF, toluene and EAc, and so forth, at room temperature. Transparent and flexible films were easily prepared by solution casting from chloroform solution of each of the polymers. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010