| Форма представления | Статьи в зарубежных журналах и сборниках |
| Год публикации | 2020 |
| Язык | английский |
|
Гнездилов Олег Иванович, автор
Филиппов Андрей Васильевич, автор
|
| Библиографическое описание на языке оригинала |
Khan I.A, Gnezdilov O.I, Wang Y.-L, Effect of aromaticity in anion on the cation-anion interactions and ionic mobility in fluorine-free ionic liquids//Journal of Physical Chemistry B. - 2020. - Vol.124, P.-11962-11973 . |
| Аннотация |
Ionic liquids (ILs) composed of tetra(n-butyl)phosphonium [P4444]+ and tetra(nbutyl) ammonium [N4444]+ cations paired with 2-furoate [FuA]−, tetrahydo-2-furoate [HFuA]−, and thiophene-2-carboxylate [TpA]− anions are prepared to investigate the effects of electron delocalization in anion and the mutual interactions between cations and anions on their physical
and electrochemical properties. The [P4444]+ cations-based ILs are found to be liquids, while the [N4444]+ cations-based ILs are semi-solids at room temperature. Thermogravimetric analysis
revealed higher decomposition temperatures and differential scanning calorimetry analysis showed lower glass transition temperatures for phosphonium-based ILs than the ammoniumbased counterparts. The ILs are arranged in the decreasing order of their ionic conductivities as [P4444][HFuA] (0.069 mS cm−1) > [P4444][FuA] (0.032 mS cm−1) > [P4444][TpA] (0.028 mS cm−1) at 20 ?C. The oxidative limit of the ILs followed the sequence of [FuA]−> [TpA]−> [HFuA]−, as measured by linear sweep voltammetry. This order can be attributed to the electrons' delocalization in [FuA]− and in [TpA]− aromatic anions, which has enhanced the oxidative limit potentials and the overall electrochemical stabilities. |
| Ключевые слова |
Ionic liquids, tetra(n-butyl)phosphonium, tetra(nbutyl) ammonium,
cations, electron delocalization, glass transition temperatures, ionic conductivities, diffusion, NMR |
| Название журнала |
Journal of Physical Chemistry B
|
| URL |
https://dx.doi.org/10.1021/acs.jpcb.0c08421 |
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=246850 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Гнездилов Олег Иванович |
ru_RU |
| dc.contributor.author |
Филиппов Андрей Васильевич |
ru_RU |
| dc.date.accessioned |
2020-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2020-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2020 |
ru_RU |
| dc.identifier.citation |
Khan I.A, Gnezdilov O.I, Wang Y.-L, Effect of aromaticity in anion on the cation-anion interactions and ionic mobility in fluorine-free ionic liquids//Journal of Physical Chemistry B. - 2020. - Vol.124, P.-11962-11973 . |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=246850 |
ru_RU |
| dc.description.abstract |
Journal of Physical Chemistry B |
ru_RU |
| dc.description.abstract |
Ionic liquids (ILs) composed of tetra(n-butyl)phosphonium [P4444]+ and tetra(nbutyl) ammonium [N4444]+ cations paired with 2-furoate [FuA]−, tetrahydo-2-furoate [HFuA]−, and thiophene-2-carboxylate [TpA]− anions are prepared to investigate the effects of electron delocalization in anion and the mutual interactions between cations and anions on their physical
and electrochemical properties. The [P4444]+ cations-based ILs are found to be liquids, while the [N4444]+ cations-based ILs are semi-solids at room temperature. Thermogravimetric analysis
revealed higher decomposition temperatures and differential scanning calorimetry analysis showed lower glass transition temperatures for phosphonium-based ILs than the ammoniumbased counterparts. The ILs are arranged in the decreasing order of their ionic conductivities as [P4444][HFuA] (0.069 mS cm−1) > [P4444][FuA] (0.032 mS cm−1) > [P4444][TpA] (0.028 mS cm−1) at 20 ?C. The oxidative limit of the ILs followed the sequence of [FuA]−> [TpA]−> [HFuA]−, as measured by linear sweep voltammetry. This order can be attributed to the electrons' delocalization in [FuA]− and in [TpA]− aromatic anions, which has enhanced the oxidative limit potentials and the overall electrochemical stabilities. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
Ionic liquids |
ru_RU |
| dc.subject |
tetra(n-butyl)phosphonium |
ru_RU |
| dc.subject |
tetra(nbutyl) ammonium |
ru_RU |
| dc.subject |
cations |
ru_RU |
| dc.subject |
electron delocalization |
ru_RU |
| dc.subject |
glass transition temperatures |
ru_RU |
| dc.subject |
ionic conductivities |
ru_RU |
| dc.subject |
diffusion |
ru_RU |
| dc.subject |
NMR |
ru_RU |
| dc.title |
Effect of aromaticity in anion on the cation-anion interactions and ionic mobility in fluorine-free ionic liquids |
ru_RU |
| dc.type |
Статьи в зарубежных журналах и сборниках |
ru_RU |
|
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