Pressure Effect on the Conformational Equilibrium of Imidazolium-Based Ionic Liquids
-
- TAKEKIYO Takahiro
- Dept. of Appl. Chem., Nat. Defense Acad.
-
- SHIGEMI Machiko
- Dept. of Appl. Chem., Nat. Defense Acad.
-
- ABE Hiroshi
- Dept. of Mater. Sci. and Eng., Nat. Defense Acad.
-
- YOSHIMURA Yukihiro
- Dept. of Appl. Chem., Nat. Defense Acad.
Bibliographic Information
- Other Title
-
- イミダゾリウム系イオン液体のコンフォメーション平衡に及ぼす圧力効果に関する研究
- イミダゾリウムケイ イオン エキタイ ノ コンフォメーション ヘイコウ ニ オヨボス アツリョク コウカ ニ カンスル ケンキュウ
Search this article
Abstract
Pressure effect on the conformational equilibrium of 1-butyl-3-methylimidazolium cation ([bmim]+) in the [bmim]-based ionic liquids (ILs) with three different anionic species (I, BF4, and PF6) have been studied using Raman spectroscopy. The gauche conformer for the NCCC angle of [bmim]+ increases with increasing pressure at all cases, and the trans conformer decreases. From the pressure dependence of the Raman intensity, we determined the difference in the partial molar volume (ΔVtrans→gauche) between the conformers of [bmim][X](X= I, BF4, and PF6). The negative ΔVtrans→gauche is due to the molecular volume difference (ΔVM) which consists of the van der Waals volume and void volume differences. This means that the pressure-induced [bmim]+ conformational preference of [bmim]-based ILs is dependent of the configuration of [bmim]+ against each anionic species. Thus, we proposed that the increment of the gauche conformer of [bmim]+ on the pressure-induced phase transitions is related to the change in the initial configuration of [bmim]+ against anion by compression.
Journal
-
- Journal of the Society of Materials Science, Japan
-
Journal of the Society of Materials Science, Japan 63 (9), 679-683, 2014
The Society of Materials Science, Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1390001205445403008
-
- NII Article ID
- 130004691157
-
- NII Book ID
- AN00096175
-
- ISSN
- 18807488
- 05145163
-
- NDL BIB ID
- 025814487
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed