A new method to prepare 3-octylthiophene and poly-(3-octylthiophene)

A new method has been developed for the synthesis of 3-octylthiophene starting from dipotassium salt of octylsuccinic anhydride, phosphorus pentasulfide and phosphorus. The yield of the reaction is about 70%. The inorganic waste formed can be converted back to phosphorus pentasulfide with sulphur at...

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Bibliographic Details
Published inSynthetic metals Vol. 69; no. 1; pp. 299 - 300
Main Authors Järvinen, H., Lahtinen, L., Näsman, J., Hormi, O., Tammi, A.-L.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.1995
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Summary:A new method has been developed for the synthesis of 3-octylthiophene starting from dipotassium salt of octylsuccinic anhydride, phosphorus pentasulfide and phosphorus. The yield of the reaction is about 70%. The inorganic waste formed can be converted back to phosphorus pentasulfide with sulphur at 550 °C. The method reduces substantially the production cost and the amount of waste. 3-Octylthiophene obtained via this method was polymerized using FeCl 3 as the oxidant. The polymer yield was about 70%. The characterized polymer consists of 84 % regular head-to-tail linkpages. The polymer has Fe content less than 100 ppm, chlorine content 0.5 %, Mw ≈70000 and Mn ≈29000. The 4-point conductivity of a doped film is 47 S/cm.
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ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(94)02458-B