Journal article
Communication: Nanoscale structure of tetradecyltrihexylphosphonium based ionic liquids
The Journal of chemical physics, Vol.144(12), pp.121102-121102
2016
DOI: 10.1063/1.4944678
PMID: 27036419
Abstract
In a recent communication [J. J. Hettige et al., J. Chem. Phys. 140, 111102 (2014)], we investigated the anomalous temperature dependence of the X-ray first sharp diffraction peak (or prepeak) in the tetradecyltrihexylphosphonium bis(trifluoromethylsulfonyl)-amide ionic liquid. Contrary to what was expected and often observed, the first sharp diffraction peak in this system was shown to increase in intensity with increasing temperature. This implies higher intermediate-range periodicity at a higher temperature. Is this counter-intuitive behavior specific to the combination of cation and anion? The current work analyzes the structural behavior of the same cation coupled with six different anions ranging from the small and spherically symmetric Cl(-) to the more structurally complex and charge-diffuse NTf2 (-). In all cases, the same temperature behavior trend for the prepeak is observed independent of anionic nature. We will show that the intensity increase in the prepeak region is associated with the structural behavior of charged liquid subcomponents. Instead, upon a temperature increase, the apolar subcomponents contribute to what would be an expected decrease of prepeak intensity.
Details
- Title: Subtitle
- Communication: Nanoscale structure of tetradecyltrihexylphosphonium based ionic liquids
- Creators
- Jeevapani J HettigeJuan C AraqueHemant K KashyapClaudio J Margulis
- Resource Type
- Journal article
- Publication Details
- The Journal of chemical physics, Vol.144(12), pp.121102-121102
- DOI
- 10.1063/1.4944678
- PMID
- 27036419
- ISSN
- 0021-9606
- eISSN
- 1089-7690
- Grant note
- DOI: 10.13039/100000165, name: Division of Chemistry, award: CHE-1362129
- Language
- English
- Date published
- 2016
- Academic Unit
- Chemistry
- Record Identifier
- 9983985836802771
Metrics
23 Record Views