Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Mamoru Imanari"'
Publikováno v:
The Journal of Physical Chemistry B. 120:5710-5719
By use of pulse NMR methods, the temperature dependences of the longitudinal and transverse relaxation times for (1)H and (19)F were measured for the three phases of 1-butyl-1-methylpiperidinium bis(fluorosulfonyl)amide ([Pip1,4][FSA]), i.e., liquid
Publikováno v:
The Journal of Physical Chemistry B. 119:12552-12560
The structural flexibility and conformational variety of the ions in room-temperature ionic liquids (RTILs) have significant effects on their physicochemical properties. To begin a systematic study of the thermodynamic properties of nonaromatic RTILs
Publikováno v:
Magnetic Resonance in Chemistry. 53:369-378
We report the results of a comprehensive 81Br NMR spectroscopic study of the structure and dynamics of two room temperature ionic liquids (RTILs), 1-butyl-3-methylimidazolium bromide ([C4mim]Br) and 1-butyl-2,3-dimethylimidazolium bromide ([C4C1mim]B
Publikováno v:
Solid State Ionics. 259:41-45
We report the results of a 1 H NMR spectroscopic study of cation dynamics in the RTIL, 1-butyl-3-methylimidazolium bromide, in its crystalline state with two different but considerably low water contents, 30 ppm and 200 ppm. The results indicate the
Publikováno v:
Chemical Physics Letters. 543:72-75
A series of bis(imidazolium)-based ionic liquids (ILs) with alkylene linkers of various lengths (carbon number = 5–12) was characterised with respect to viscosity and reorientational dynamics with bis(trifluoromethanesulfonyl)amide as the counteran
Publikováno v:
The Journal of Physical Chemistry B. 116:3991-3997
We studied the crystallization process of 1-butyl-3-methylimidazolium bromide ([C(4)mim]Br) using measurements of supersensitive scanning calorimetry, free induction decay (FID) signals of (1)H NMR, and direct observation. These three methods provide
Publikováno v:
Chemical Physics Letters. 507:100-104
We have synthesized and characterized a series of cyclohexyl-imidazolium based ionic liquids incorporating a bis(trifluoromethanesulfonyl)amide anion. To reveal the characteristic features afforded by a flexible cyclohexyl substituent, the physicoche
Publikováno v:
The Journal of Physical Chemistry A. 115:2999-3005
We investigated the rotational dynamics of two imidazolium-based ionic liquids, 1-butyl-3-methylimidazolium bromide ([C(4)mim]Br) and 1-butyl-2,3-dimethylimidazolium bromide ([C(4)C(1)mim]Br), to reveal the effects of methylation at position 2 of the
Publikováno v:
Chemical Physics Letters. 459:89-93
We measured longitudinal and transverse relaxation times (T1 and T2) of 1-butyl-3-methylimidazolium bromide ([bmim]Br) from 203 to 393 K, using pulse 1H NMR. T1 and T2 data show the existence of liquid, super-cooled liquid and ‘coagulated state’.
Publikováno v:
Physical chemistry chemical physics : PCCP. 17(14)
Some of the important factors that characterise room-temperature ionic liquids (RTILs) are the variety of conformations adopted by the constituent ions and their flexibility. Using 1,3-dimethylimidazolium bis(fluorosulfonyl)amide ([C1mim][FSA]) and 1