Abstract
New pyrrolidinium and piperidinium bis(trifluoromethanesulfonyl)imide (TFSI) ionic liquids (ILs) having allyl substituents were synthesized and characterized. All of them are liquid at room temperature and stable up to 300°C. The pyrrolidinium-based ILs showed better conductivities and lower viscosities than the corresponding piperidinium-based ILs. Among them, 1-allyl-1-methylpyrrolidinium TFSI showed the lowest viscosity of 52 cP, the highest conductivity of 5.7 mS cm?1, and the most negative cathodic voltage window of ?3.2 V (vs. Fc/Fc+) on a platinum electrode, which are the improved results compared to the corresponding analogue having a saturated substituent, 1-methyl-1-propylpyrrolidinium TFSI.
| Original language | English |
|---|---|
| Pages (from-to) | 1567-1572 |
| Number of pages | 6 |
| Journal | Bulletin of the Korean Chemical Society |
| Volume | 28 |
| Issue number | 9 |
| DOIs | |
| State | Published - 20 Sep 2007 |
| Externally published | Yes |
Keywords
- Allyl substituent
- Bis(trifluoromethanesulfonyl)imide (TFSI)
- Ionic liquid
- Piperidinium
- Pyrrolidinium
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