Poly(triphenylamine)s derived from oxidative coupling reaction: Substituent effects on the polymerization,electrochemical, and electro‐optical properties |
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| Authors: | Hung‐yi Lin Guey‐Sheng Liou |
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| Affiliation: | 1. Department of Applied Chemistry, National Chi Nan University, 1 University Rd. Puli, Nantou Hsien 54561, Taiwan;2. Institute of Polymer Science and Engineering, National Taiwan University, No.1, Sec. 4, Roosevelt Rd. Taipei 10617, Taiwan |
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| Abstract: | A series of triphenylamine‐based polymers containing electron‐donating methoxy (? OCH3) and electron‐withdrawing cyano or nitro (? CN or ? NO2) substituents in the main chains have been designed and investigated. These conjugated polymers ( P1 – P3 ) could be readily prepared by oxidative coupling polymerization from monomers ( M1 – M3 ) using FeCl3 as an oxidant. The P2 and P3 exhibited moderate high Tg values (203–205 °C) and thermal stability. These polymers in NMP solution showed UV–vis absorption around 288–404 nm and photoluminescence peaks around 435–492 nm. P1 – P3 showed reversible oxidation redox couples at Eonset = 0.67, 0.99, and 1.00 V in solution of 0.1 M tetrabutylammonium perchlorate (TBAP)/acetonitrile (CH3CN), respectively. M3 and P3 exhibited reversible reduction redox couples at Eonset = ?1.04 and ?1.03 V. These polymers also revealed electrochromic characteristic changing color at different potential. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 285–294, 2009 |
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| Keywords: | conjugated polymers electrochemistry fluorescence functionalization of polymers high‐performance polymers |
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