Abstract
The shear relaxation spectra of the solutions of lithium salts in ionic liquids composed of N-methyl-N-propylpyrrolidinium cation paired with bis(trifluoromethanesulfonyl)amide (TFSA-) or bis(fluorosulfonyl) amide (FSA-) anions are determined from 5 to 205 MHz at various concentrations of lithium salts. The addition of lithium salt retards the shear relaxation, together with the increase in the shear viscosity. The normalized spectra reduce to a single curve when plotted against the product of the frequency and zero-frequency shear viscosity, which indicates that the increase in the shear viscosity by lithium salts is ascribed to the increase in the relaxation time. The difference in the shear viscosity of TFSA- and FSA-based ionic liquids is also elucidated in terms of the shear relaxation time. The relationship with previous studies on ionic mobility and liquid structure is also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 7322-7327 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry B |
| Volume | 116 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 2012 Jun 21 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Materials Chemistry
- Surfaces, Coatings and Films
Cite this
Effects of lithium salts on shear relaxation spectra of pyrrolidinium-based ionic liquids. / Yamaguchi, Tsuyoshi; Mikawa, Ken Ichi; Koda, Shinobu; Serizawa, Nobuyuki; Seki, Shiro; Fujii, Kenta; Umebayashi, Yasuhiro.
In: Journal of Physical Chemistry B, Vol. 116, No. 24, 21.06.2012, p. 7322-7327.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of lithium salts on shear relaxation spectra of pyrrolidinium-based ionic liquids
AU - Yamaguchi, Tsuyoshi
AU - Mikawa, Ken Ichi
AU - Koda, Shinobu
AU - Serizawa, Nobuyuki
AU - Seki, Shiro
AU - Fujii, Kenta
AU - Umebayashi, Yasuhiro
PY - 2012/6/21
Y1 - 2012/6/21
N2 - The shear relaxation spectra of the solutions of lithium salts in ionic liquids composed of N-methyl-N-propylpyrrolidinium cation paired with bis(trifluoromethanesulfonyl)amide (TFSA-) or bis(fluorosulfonyl) amide (FSA-) anions are determined from 5 to 205 MHz at various concentrations of lithium salts. The addition of lithium salt retards the shear relaxation, together with the increase in the shear viscosity. The normalized spectra reduce to a single curve when plotted against the product of the frequency and zero-frequency shear viscosity, which indicates that the increase in the shear viscosity by lithium salts is ascribed to the increase in the relaxation time. The difference in the shear viscosity of TFSA- and FSA-based ionic liquids is also elucidated in terms of the shear relaxation time. The relationship with previous studies on ionic mobility and liquid structure is also discussed.
AB - The shear relaxation spectra of the solutions of lithium salts in ionic liquids composed of N-methyl-N-propylpyrrolidinium cation paired with bis(trifluoromethanesulfonyl)amide (TFSA-) or bis(fluorosulfonyl) amide (FSA-) anions are determined from 5 to 205 MHz at various concentrations of lithium salts. The addition of lithium salt retards the shear relaxation, together with the increase in the shear viscosity. The normalized spectra reduce to a single curve when plotted against the product of the frequency and zero-frequency shear viscosity, which indicates that the increase in the shear viscosity by lithium salts is ascribed to the increase in the relaxation time. The difference in the shear viscosity of TFSA- and FSA-based ionic liquids is also elucidated in terms of the shear relaxation time. The relationship with previous studies on ionic mobility and liquid structure is also discussed.
UR - http://www.scopus.com/inward/record.url?scp=84862663832&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862663832&partnerID=8YFLogxK
U2 - 10.1021/jp3032308
DO - 10.1021/jp3032308
M3 - Article
VL - 116
SP - 7322
EP - 7327
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
SN - 1520-6106
IS - 24
ER -