Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids

Tzi Yi Wu; Shyh Gang Su; Yi Hsuan Wang; Yuan Chung Lin; Jeng Kuei Chang; Chung Wen Kuo; I. Wen Sun

doi:10.1016/j.jtice.2015.10.047

Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids

Tzi Yi Wu, Shyh Gang Su, Yi Hsuan Wang, Yuan Chung Lin, Jeng Kuei Chang, Chung Wen Kuo, I. Wen Sun

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

An ether- and allyl-functionalized dicationic ionic liquid ([AIOIA][TFSI]) is prepared and the effects of the addition of lithium bis(trifluoromethanesulfonyl)imide into [AIOIA][TFSI] on hydrogen, fluorine, and lithium diffusion coefficients, spin-lattice relaxation times, and chemical shift of one-dimensional (1D) nuclear magnetic resonance (NMR) spectroscopy are studied. NMR longitudinal relaxation relation time measurements (400 MHz) show that the ¹H-T₁ and ¹⁹F-T₁ values of neat [AIOIA][TFSI] and LiTFSI-doped [AIOIA][TFSI] increase with increasing temperature and decrease with increasing LiTFSI concentration. The chemical shift variations in 1D NMR spectroscopy show an upfield shift in ¹H and ¹⁹F spectra with increasing lithium salt concentration in LiTFSI-doped [AIOIA][TFSI]. A tendency of cluster-like structural formation is the dominant effect when LiTFSI is added to [AIOIA][TFSI]. The Li ion transference number increases with increasing temperature and increasing LiTFSI mole fraction in LiTFSI-doped [AIOIA][TFSI]. The high t_Li with high lithium salt concentration can compensate for the slower lithium transport caused by high viscosity.

Original language	English
Pages (from-to)	138-150
Number of pages	13
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	60
DOIs	https://doi.org/10.1016/j.jtice.2015.10.047
Publication status	Published - 2016 Mar 1

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

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10.1016/j.jtice.2015.10.047

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Wu, T. Y., Su, S. G., Wang, Y. H., Lin, Y. C., Chang, J. K., Kuo, C. W., & Sun, I. W. (2016). Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids. Journal of the Taiwan Institute of Chemical Engineers, 60, 138-150. https://doi.org/10.1016/j.jtice.2015.10.047

@article{640c75696c54407c992d4ec79ddb79dd,

title = "Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids",

abstract = "An ether- and allyl-functionalized dicationic ionic liquid ([AIOIA][TFSI]) is prepared and the effects of the addition of lithium bis(trifluoromethanesulfonyl)imide into [AIOIA][TFSI] on hydrogen, fluorine, and lithium diffusion coefficients, spin-lattice relaxation times, and chemical shift of one-dimensional (1D) nuclear magnetic resonance (NMR) spectroscopy are studied. NMR longitudinal relaxation relation time measurements (400 MHz) show that the 1H-T1 and 19F-T1 values of neat [AIOIA][TFSI] and LiTFSI-doped [AIOIA][TFSI] increase with increasing temperature and decrease with increasing LiTFSI concentration. The chemical shift variations in 1D NMR spectroscopy show an upfield shift in 1H and 19F spectra with increasing lithium salt concentration in LiTFSI-doped [AIOIA][TFSI]. A tendency of cluster-like structural formation is the dominant effect when LiTFSI is added to [AIOIA][TFSI]. The Li ion transference number increases with increasing temperature and increasing LiTFSI mole fraction in LiTFSI-doped [AIOIA][TFSI]. The high tLi with high lithium salt concentration can compensate for the slower lithium transport caused by high viscosity.",

author = "Wu, {Tzi Yi} and Su, {Shyh Gang} and Wang, {Yi Hsuan} and Lin, {Yuan Chung} and Chang, {Jeng Kuei} and Kuo, {Chung Wen} and Sun, {I. Wen}",

note = "Funding Information: The authors would like to thank Bureau of Energy, Ministry of Science and Technology of Taiwan for financially supporting through projects MOST 103-2221-E-224-058-MY3, MOST 104-3113-E-006-011-CC2, and MOST 104-2622-E-224-013-CC3. Publisher Copyright: {\textcopyright} 2015 Taiwan Institute of Chemical Engineers. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

year = "2016",

month = mar,

day = "1",

doi = "10.1016/j.jtice.2015.10.047",

language = "English",

volume = "60",

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journal = "Journal of the Taiwan Institute of Chemical Engineers",

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Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids. / Wu, Tzi Yi; Su, Shyh Gang; Wang, Yi Hsuan et al.
In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 60, 01.03.2016, p. 138-150.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids

AU - Wu, Tzi Yi

AU - Su, Shyh Gang

AU - Wang, Yi Hsuan

AU - Lin, Yuan Chung

AU - Chang, Jeng Kuei

AU - Kuo, Chung Wen

AU - Sun, I. Wen

N1 - Funding Information: The authors would like to thank Bureau of Energy, Ministry of Science and Technology of Taiwan for financially supporting through projects MOST 103-2221-E-224-058-MY3, MOST 104-3113-E-006-011-CC2, and MOST 104-2622-E-224-013-CC3. Publisher Copyright: © 2015 Taiwan Institute of Chemical Engineers. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2016/3/1

Y1 - 2016/3/1

N2 - An ether- and allyl-functionalized dicationic ionic liquid ([AIOIA][TFSI]) is prepared and the effects of the addition of lithium bis(trifluoromethanesulfonyl)imide into [AIOIA][TFSI] on hydrogen, fluorine, and lithium diffusion coefficients, spin-lattice relaxation times, and chemical shift of one-dimensional (1D) nuclear magnetic resonance (NMR) spectroscopy are studied. NMR longitudinal relaxation relation time measurements (400 MHz) show that the 1H-T1 and 19F-T1 values of neat [AIOIA][TFSI] and LiTFSI-doped [AIOIA][TFSI] increase with increasing temperature and decrease with increasing LiTFSI concentration. The chemical shift variations in 1D NMR spectroscopy show an upfield shift in 1H and 19F spectra with increasing lithium salt concentration in LiTFSI-doped [AIOIA][TFSI]. A tendency of cluster-like structural formation is the dominant effect when LiTFSI is added to [AIOIA][TFSI]. The Li ion transference number increases with increasing temperature and increasing LiTFSI mole fraction in LiTFSI-doped [AIOIA][TFSI]. The high tLi with high lithium salt concentration can compensate for the slower lithium transport caused by high viscosity.

AB - An ether- and allyl-functionalized dicationic ionic liquid ([AIOIA][TFSI]) is prepared and the effects of the addition of lithium bis(trifluoromethanesulfonyl)imide into [AIOIA][TFSI] on hydrogen, fluorine, and lithium diffusion coefficients, spin-lattice relaxation times, and chemical shift of one-dimensional (1D) nuclear magnetic resonance (NMR) spectroscopy are studied. NMR longitudinal relaxation relation time measurements (400 MHz) show that the 1H-T1 and 19F-T1 values of neat [AIOIA][TFSI] and LiTFSI-doped [AIOIA][TFSI] increase with increasing temperature and decrease with increasing LiTFSI concentration. The chemical shift variations in 1D NMR spectroscopy show an upfield shift in 1H and 19F spectra with increasing lithium salt concentration in LiTFSI-doped [AIOIA][TFSI]. A tendency of cluster-like structural formation is the dominant effect when LiTFSI is added to [AIOIA][TFSI]. The Li ion transference number increases with increasing temperature and increasing LiTFSI mole fraction in LiTFSI-doped [AIOIA][TFSI]. The high tLi with high lithium salt concentration can compensate for the slower lithium transport caused by high viscosity.

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AN - SCOPUS:84958755909

SN - 1876-1070

VL - 60

SP - 138

EP - 150

JO - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

ER -

Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids

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