| Full text | |
| Author(s): |
Faria, Luiz F. O.
;
Nobrega, Marcelo M.
;
Temperini, Marcia L. A.
;
Bini, Roberto
;
Ribeiro, Mauro C. C.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Journal of Physical Chemistry B; v. 120, n. 34, p. 9097-9102, SEP 1 2016. |
| Web of Science Citations: | 3 |
| Abstract | |
Ionic liquids are an interesting class of materials due to their distinguished properties, allowing their use in an impressive range of applications,, from catalysis to hypergolic fuels. However, the reactivity triggered by the application of high pressure can give rise to a new class of materials, which is not achieved under normal conditions. Here, we report on the high-pressure chemical instability of the ionic liquid 1-allyl-3-methylimi dazolium dicyanamide, {[}allylC(1) im] {[}N(CN)(2)], probed by both Raman and IR techniques and supported by quantum chemical calculations. Our results show a reaction occurring above 8 GPa, involving the terminal double bond of the allyl group, giving rise to an oligomeric product. The results presented herein contribute to our understanding of the stability of ionic liquids, which is of paramount interest for engineering applications. Moreover, gaining insight into this peculiar kind of reactivity could lead to the development of new or alternative synthetic routes to achieve, for example, poly(ionic liquids). (AU) | |
| FAPESP's process: | 15/05803-0 - Ionic liquid structure under high pressure |
| Grantee: | Luiz Felipe de Oliveira Faria |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 15/09763-2 - High pressure synthesis and reactivity of aniline and polyaniline-gold composites |
| Grantee: | Marcelo Medre Nobrega |
| Support type: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 12/13119-3 - Vibrational spectroscopy in condensed phases |
| Grantee: | Mauro Carlos Costa Ribeiro |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 14/15107-8 - High pressure Raman spectroscopy, from aromatics amines to conducting polymers. |
| Grantee: | Marcelo Medre Nobrega |
| Support type: | Scholarships in Brazil - Post-Doctorate |