The thermal conversion of the tetrahydrothiophene‐precursor polymer to poly(p‐phenylene vinylene)
The thermal conversion of the tetrahydrothiophene‐precursor polymer to poly(p‐phenylene vinylene)
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DOI：
10.1002/(sici)1099-1581(199905)10:5
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发表时间：
1999-05
影响因子：
3.4
通讯作者：
M. Herold;J. Gmeiner;M. Schwoerer
中科院分区：
文献类型：
--
作者：
M. Herold;J. Gmeiner;M. Schwoerer
本文报道了四氢噻吩（THT）前体热转化为聚对苯撑乙烯（PPV）。对转化过程的详细研究表明，离去基团THT和HCl不会同时消除。中等温度（≤125 °C）足以消除THT，而对于离去基团HCl，需要150 °C的更高温度。此外，THT基团在两个特征温度下分裂。我们的研究表明，只有考虑到聚合物链的构型，才能得到一致的反应机理图。对于THT-前体到PPV的总反应，建议由至少四个步骤组成的反应机制。版权所有© 1999年约翰威利父子有限公司。
This paper reports the thermal conversion of the tetrahydrothiophene (THT)-precursor to poly(p-phenylene vinylene) (PPV). Detailed investigations of the conversion process show that the leaving groups THT and HCl do not eliminate simultaneously. Moderate temperatures (≤125 °C) are sufficient to eliminate the THT while a higher temperature of ≈150 °C is necessary for the leaving group HCl. Furthermore, the THT groups split off at two characteristic temperatures. Our investigations have shown that a consistent picture of the reaction mechanism can only be obtained if the configuration of the polymer chain is considered. For the total reaction of the THT-precursor to PPV a reaction mechanism is suggested that consists of at least four steps. Copyright © 1999 John Wiley & Sons, Ltd.