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The thermal conversion of the tetrahydrothiophene-precursor polymer to poly(p-phenylene vinylene)

✍ Scribed by M. Herold; J. Gmeiner; M. Schwoerer

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
337 KB
Volume
10
Category
Article
ISSN
1042-7147

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✦ Synopsis

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 Β°C) are sufficient to eliminate the THT while a higher temperature of %150 Β°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.

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