New synthetic routes to poly (isothianaphthene) I. Reaction of phthalic anhydride and phthalide with phosphorus pentasulfide
| Autor: | Marcel Aussems, Peter E. Froehling, Olav Marcus Aagaard, Ronald Michael Alexander Maria Schellekens, Jan Gelan, I. Hoogmartens, Rob van Asselt, Dirk Vanderzande |
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| Rok vydání: | 1995 |
| Předmět: |
Thermogravimetric analysis
Phthalic anhydride Mechanical Engineering Doping Metals and Alloys Phosphorus pentasulfide Condensed Matter Physics Electronic Optical and Magnetic Materials Phthalide symbols.namesake chemistry.chemical_compound chemistry Solid-state nuclear magnetic resonance Mechanics of Materials Polymer chemistry Materials Chemistry symbols Thermal stability Raman spectroscopy Nuclear chemistry |
| Zdroj: | Synthetic Metals. 74:65-70 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/0379-6779(95)80038-7 |
| Popis: | A new route for the formation of the low bandgap polymer poly(isothianaphthene) is presented. The route comprises the reaction of phthalic anhydride or phthalide with phosphorus pentasulfide at elevated temperatures ( T ⩾ 120 °C), and leads to the formation of poly(isothianaphthene) in one single step. The product obtained was analysed by elemental analysis, IR, Raman and solid state NMR spectroscopy. Chemical doping and dedoping of the material were investigated, and the maximum conductivity obtained was 10 S cm −1 by doping with NOSbF 6 . Both doped and undoped samples of poly(isothianaphthene) prepared by this new route were thermally very stable in air or in an inert helium atmosphere as shown by thermogravimetric analysis. Furthermore, the conductivity of a doped sample remained unchanged up to 250 °C in air. Preliminary results showed that the reaction with phosphorus pentasulfide can also be used to obtain nitrogen analogues of poly(isothianaphthene). |
| Databáze: | OpenAIRE |
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