Synthesis of regiocontrolled poly(4,6-di-n-butoxy-1,3-phenylene) by oxidative coupling polymerization

✍ Scribed by Takashi Okada; Naoki Fujiwara; Takeaki Ogata; Osamu Haba; Mitsuru Ueda

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 162 KB
• Volume: 35
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(199708)35:11<2259::aid-pola16>3.0.co;2-d

✦ Synopsis

Poly(4,6-di-n-butoxy-1,3-phenylene) ( 6) was prepared by oxidative coupling polymerization of 1,3-di-n-butoxybenzene ( 1) or 2,2,4,4-tetra-n-butoxy biphenyl (3). Polymerizations were conducted in nitrobenzene in the presence of FeCl 3 at room temperature and produced polymers with number-average molecular weights up to 42,000. The effects of various factors, such as amount of FeCl 3 and reaction temperature and time were studied. The structure of polymer 6 was characterized by 270 MHz 1 Hand 68.5 MHz 13 C-NMR spectroscopies and was estimated to consist of almost completely 1,3-linkage. The regiocontrolled polymer was readily soluble in common organic solvents. Thermogravimetric analysis of polymer 6 showed 10% weight loss at 390ЊC in nitrogen.