%0 Journal Article %1 Katase06 %A Katase, Takuma %A Imashuku, Susumu %A Murase, Kuniaki %A Hirato, Tetsuji %A Awakura, Yasuhiro %D 2006 %J Science and Technology of Advanced Materials %K and content ionic liquid water %P 502-510 %T Water content and related physical properties of aliphatic quaternary ammonium imide-type ionic liquid containing metal ions. %V 7 %X The ionic liq., trimethyl-n-hexylammonium bis((trifluoromethyl)sulfonyl)amide (TMHA-Tf2N), has a wide electrochem. window of more than 5 V and is considered to be hydrophobic because of two -CF3 groups in its Tf2N- anion. However, a small amt. of water remains in the ionic liq. even after dehydration in vacuo, which causes some problems in metal electrodeposition when using the ionic liq. as a solvent. We measured the water content of the ionic liqs., TMHA-Tf2N contg. M(Tf2N)n (M=H, Li, Mg, Ni, Cu, Zn, La, and Dy; n=1, 2, or 3), as well as their kinematic viscosity and elec. cond. in the temp. range of 25-130C. Furthermore, differential scanning calorimetry was performed for these ionic liqs. to find their glass transition temp., crystn. temp., and melting temp. The water content of TMHA-Tf2N contg. M(Tf2N)n salts decreased with an increase in temp. At the same time, the kinematic viscosity decreased and the elec. cond. increased. By measuring the optical absorption spectrum, it was found that the metal ions in TMHA-Tf2N were hydrated. The addn. of M(Tf2N)n to TMHA-Tf2N, increased the water content at a const. temp., which resulted in slight increases in the kinematic viscosity and decrease in the elec. cond. A Walden-like plot of the elec. conductivities against the kinematic viscosities, measured over various temps. and water contents, gave a single straight line.

@article{Katase06, abstract = {The ionic liq., trimethyl-n-hexylammonium bis((trifluoromethyl)sulfonyl)amide (TMHA-Tf2N), has a wide electrochem. window of more than 5 V and is considered to be hydrophobic because of two -CF3 groups in its Tf2N- anion. However, a small amt. of water remains in the ionic liq. even after dehydration in vacuo, which causes some problems in metal electrodeposition when using the ionic liq. as a solvent. We measured the water content of the ionic liqs., TMHA-Tf2N contg. M(Tf2N)n (M=H, Li, Mg, Ni, Cu, Zn, La, and Dy; n=1, 2, or 3), as well as their kinematic viscosity and elec. cond. in the temp. range of 25-130C. Furthermore, differential scanning calorimetry was performed for these ionic liqs. to find their glass transition temp., crystn. temp., and melting temp. The water content of TMHA-Tf2N contg. M(Tf2N)n salts decreased with an increase in temp. At the same time, the kinematic viscosity decreased and the elec. cond. increased. By measuring the optical absorption spectrum, it was found that the metal ions in TMHA-Tf2N were hydrated. The addn. of M(Tf2N)n to TMHA-Tf2N, increased the water content at a const. temp., which resulted in slight increases in the kinematic viscosity and decrease in the elec. cond. A Walden-like plot of the elec. conductivities against the kinematic viscosities, measured over various temps. and water contents, gave a single straight line. }, added-at = {2009-08-05T14:06:12.000+0200}, author = {Katase, Takuma and Imashuku, Susumu and Murase, Kuniaki and Hirato, Tetsuji and Awakura, Yasuhiro}, biburl = {https://www.bibsonomy.org/bibtex/2deb5d3875f41079379ed430612779f28/ramunno}, interhash = {8b56c6fbd894f8cd75cc718ab9f40396}, intrahash = {deb5d3875f41079379ed430612779f28}, journal = {Science and Technology of Advanced Materials}, keywords = {and content ionic liquid water}, pages = {502-510}, timestamp = {2009-08-05T14:06:12.000+0200}, title = {Water content and related physical properties of aliphatic quaternary ammonium imide-type ionic liquid containing metal ions. }, volume = 7, year = 2006 }