Glass transition behaviour of ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate–H2O mixed solutions

Yoshimura, Yukihiro; Kimura, Hyosun; Okamoto, Chikara; Miyashita, Tomoki; Imai, Yusuke; Abe, Hiroshi

doi:10.1016/j.jct.2010.10.010

Cited by 39 publications

(42 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6b. The glass transition endotherm of IL was observed around at À80 to À70 C and the result is similar to previous report [36,42]. Although the glass transition of IL was observed at a fixed temperature, surprisingly, the endothermic melting and volatilization peaks of water could not be clearly observed as compared to Fig.…”

Section: Behavior Of Water Within Agar Gel In Paste Conditionsupporting

confidence: 90%

FE-SEM observation, and mechanism of interaction of wet agar gel in various swelling conditions using hydrophilic ionic liquid

Takahashi

Shirai

Fuji

2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

Section: Behavior Of Water Within Agar Gel In Paste Conditionsupporting

confidence: 90%

FE-SEM observation, and mechanism of interaction of wet agar gel in various swelling conditions using hydrophilic ionic liquid

Takahashi

Shirai

Fuji

2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

“…Instead, an intenisty of the Raman peak centered at ∼3440 cm −1 is appreciable. This band is mainly due to the OH stretching vibrations of water molecules weakly hydrogen bonded to halide ions [27] [28]. Interestingly, in contrary to the results of quaternary ammonium-type ionic liquids, the multiple glass transition behavior was not observed and the system shows only one T g throughout the whole concentration range.…”

Section: Raman Spectracontrasting

confidence: 57%

Glass Transition Behavior of the Quaternary Ammonium-Type Ionic Liquid: N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bromide-H₂O Mixtures

Yoshimura

Hatano

Imai

et al. 2012

Journal of Thermodynamics

Self Cite

View full text Add to dashboard Cite

By a simple differential thermal analysis (DTA) system, the concentration dependence of the glass transition temperatures (T g s) for the quaternary ammonium-type ionic liquid, N, N-diethyl-N-methyl-N-(2-methoxyethyl) O mixtures basically show one-T g behavior and the T g decreases monotonically with increasing H 2 O content up to around x = 91.5. But it suddenly jumps to higher T g value at a specific x =∼ 92. At this very limited point, two T g s (T g1 , T g2 ) which we might consider as a transition state from the structure belonging to the T g1 group to another one due to the T g2 group were observed. These results clearly reflect the difference in the anionic effects among Br

show abstract

“…Other details were essentially the same as in our previous study. 33 As a reference material for the measurements, benzene (Wako Pure Chemical Co.) was used. The glass transition T g and cold crystallization T cc temperatures upon heating were determined by the onsets of the exothermic and endothermic peaks, respectively.…”

Section: Methodsmentioning

confidence: 99%

Stability of the Liquid State of Imidazolium-Based Ionic Liquids under High Pressure at Room Temperature

et al. 2015

Self Cite

View full text Add to dashboard Cite

To understand the stability of the liquid phase of ionic liquids under high pressure, we investigated the phase behavior of a series of 1-alkyl-3-methylimidazolium tetrafluoroborate ([Cnmim][BF4]) homologues with different alkyl chain lengths for 2 ≤ n ≤ 8 up to ∼7 GPa at room temperature. The ionic liquids exhibited complicated phase behavior, which was likely due to the conformational flexibility in the alkyl chain. The present results reveal that [Cnmim][BF4] falls into superpressed state around 2-3 GPa range upon compression with an implication of multiple phase or structural transitions to ∼7 GPa. Remarkably, a characteristic nanostructural organization in ionic liquids largely diminishes at the superpressed state. The behaviors of imidazolium-based ionic liquids can be classified into, at least, three patterns: (1) pressure-induced crystallization, (2) superpressurization upon compression, and (3) decompression-induced crystallization from the superpressurized glass. Interestingly, the high-pressure phase behavior was relevant to the glass transition behavior at low temperatures and ambient pressure. As n increases, the glass transition pressure (pg) decreases (from 2.8 GPa to ∼2 GPa), and the glass transition temperature increases. The results indicate that the p-T range of the liquid phase is regulated by the alkyl chain length of [Cnmim][BF4] homologues.

show abstract

Glass transition behaviour of ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate–H2O mixed solutions

Cited by 39 publications

References 25 publications

FE-SEM observation, and mechanism of interaction of wet agar gel in various swelling conditions using hydrophilic ionic liquid

FE-SEM observation, and mechanism of interaction of wet agar gel in various swelling conditions using hydrophilic ionic liquid

Glass Transition Behavior of the Quaternary Ammonium-Type Ionic Liquid: N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bromide-H₂O Mixtures

Stability of the Liquid State of Imidazolium-Based Ionic Liquids under High Pressure at Room Temperature

Contact Info

Product

Resources

About

Glass transition behaviour of ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate–H2O mixed solutions

Cited by 39 publications

References 25 publications

FE-SEM observation, and mechanism of interaction of wet agar gel in various swelling conditions using hydrophilic ionic liquid

FE-SEM observation, and mechanism of interaction of wet agar gel in various swelling conditions using hydrophilic ionic liquid

Glass Transition Behavior of the Quaternary Ammonium-Type Ionic Liquid: N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bromide-H2O Mixtures

Stability of the Liquid State of Imidazolium-Based Ionic Liquids under High Pressure at Room Temperature

Contact Info

Product

Resources

About

Glass Transition Behavior of the Quaternary Ammonium-Type Ionic Liquid: N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bromide-H₂O Mixtures