Synthesis and computational oxidation mechanism study of novel organosoluble aramids with high modulus by low‐temperature solution polycondensation |
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| Authors: | Cheng‐Hung Chang Kun‐Li Wang Jyh‐Chiang Jiang Der‐Jang Liaw Kueir‐Rarn Lee Juin‐Yih Lai Kuo Yuan Chiu Yuhlong Oliver Su |
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| Affiliation: | 1. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;2. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan;3. R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan University, Chung‐Li 32023, Taiwan;4. Department of Applied Chemistry, National Chi Nan University, 1 University Road, Puli, Nantou Hsien 54561, Taiwan;5. Department of Chemistry, National Chung Hsing University, Taichung 40227, Taiwan |
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| Abstract: | A series of highly organosoluble polyamides with high modulus having propeller‐shaped triarylamine were synthesized using aromatic diacid chlorides by low‐temperature solution polycondensation. The polyamide films had strong, tough, flexible, and amorphous properties. These polymers revealed electrochromic characteristics both in the visible range and near‐infrared (NIR) region, with a color change from pale yellowish at its neutral state to green and blue at its oxidized state at applied potentials ranging from 0.00 to 1.35 V. Cyclic voltammetry (CV) of the polymer films cast onto an indium tin oxide (ITO)‐coated glass substrate exhibited two reversible redox couples at potentials of 0.80–0.87 V and 1.19–1.25 V, respectively, vs. Ag/Ag+ in acetonitrile solution. From the combination of the experimental and computational study, we proposed an oxidation mechanism based on molecular orbital (MO) theory, which well explains the CV experimental result. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010 |
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| Keywords: | aramid computational oxidation mechanism high modulus solubility |
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