Thermal and Transport Properties of Ionic Liquids Based on Benzyl-Substituted Phosphonium Cations
The physicochemical properties of two novel ionic liquids based on benzyltriethylphosphonium and benzyltributylphosphonium cations are described in this report. It was found that both benzyl-substituted phosphonium cations gave low-melting salts in combination with a bis(trifluoromethylsulfonyl)amid...
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| Veröffentlicht in: | The journal of physical chemistry. B 2009-12, Vol.113 (48), p.15870-15874 |
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| container_end_page | 15874 |
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| container_issue | 48 |
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| container_title | The journal of physical chemistry. B |
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| creator | Tsunashima, Katsuhiko Niwa, Eiko Kodama, Shun Sugiya, Masashi Ono, Yasushi |
| description | The physicochemical properties of two novel ionic liquids based on benzyltriethylphosphonium and benzyltributylphosphonium cations are described in this report. It was found that both benzyl-substituted phosphonium cations gave low-melting salts in combination with a bis(trifluoromethylsulfonyl)amide anion. The thermogravimetric analysis suggested that the benzyl-substituted phosphonium ionic liquids showed higher thermal stability than those of not only the alkyl-substituted phosphonium ILs but also the corresponding benzyl-substituted ammonium compounds. The benzyl-substituted phosphonium ionic liquids also exhibited relatively high conductivities when compared to those of the corresponding ammonium compounds. These results indicate an improving effect of introducing a benzyl group into the phosphonium cations on both the thermal stability and the conductivity. |
| doi_str_mv | 10.1021/jp908356c |
| format | Article |
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It was found that both benzyl-substituted phosphonium cations gave low-melting salts in combination with a bis(trifluoromethylsulfonyl)amide anion. The thermogravimetric analysis suggested that the benzyl-substituted phosphonium ionic liquids showed higher thermal stability than those of not only the alkyl-substituted phosphonium ILs but also the corresponding benzyl-substituted ammonium compounds. The benzyl-substituted phosphonium ionic liquids also exhibited relatively high conductivities when compared to those of the corresponding ammonium compounds. 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| subjects | B: Statistical Mechanics, Thermodynamics, Medium Effects Cations - chemistry Chemistry, Physical Electric Conductivity Ionic Liquids - chemistry Organophosphorus Compounds - chemistry Surface Properties Temperature |
| title | Thermal and Transport Properties of Ionic Liquids Based on Benzyl-Substituted Phosphonium Cations |
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