Synthesis and properties of new aromatic polyimides containing redox‐active anthraquinone moieties |
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Authors: | Sheng‐Huei Hsiao Yi‐Ruei Kung |
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Affiliation: | 1. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan;2. Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan |
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Abstract: | A novel anthraquinone‐containing bis(ether amine) monomer, 2,6‐bis(4‐aminophenoxy)anthraquinone, was synthesized from readily available reagents. A series of novel aromatic polyimides were prepared from the newly synthesized diamine monomer with various aromatic tetracarboxylic dianhydrides. The intermediate poly(amic acid)s had inherent viscosities of 0.67–1.12 dL g?1, and those derived from less stiff dianhydrides could be solution‐cast and thermally cyclodehydrated into flexible and tough polyimide films. The polyimides exhibited glass transition temperatures between 270 and 297 °C, and they were fairly stable up to a temperature of 500 °C in air or nitrogen. The electrochemical and electrochromic properties of one of the polyimides were investigated. The polymer could undergo two reversible steps of electrochemical reduction, with a color change from a colorless neutral state to pink and rose‐red reduced states. © 2012 Society of Chemical Industry |
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Keywords: | anthraquinone polyimides electrochemistry electrochromism redox polymers |
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