Design and evaluation of imidazolium cation-based ionic liquids having double-armed anions for selective cation conduction

Shibayama, Wataru; Narita, Asako; Matsumi, Noriyoshi; Ohno, Hiroyuki

doi:10.1016/j.jorganchem.2008.11.015

Cited by 12 publications

(6 citation statements)

References 23 publications

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“…5 The polymerization of ionic liquids has also been investigated, with the aim to immobilize the anion and enhance the mobility of the electrochemically active species. 9,10 It is only very recently that some interest has arisen in the synthesis of hybrid materials that combine ionic liquids with inorganic porous matrices.…”

Section: Introductionmentioning

confidence: 99%

An investigation of the sol–gel process in ionic liquid–silica gels by time resolved Raman and 1H NMR spectroscopy

Martinelli

Nordstierna

2012

Phys. Chem. Chem. Phys.

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We report, by employing time resolved Raman and nuclear magnetic resonance (NMR) spectroscopy, on the gelation process in ionogels. These are prepared from a non-aqueous sol-gel reaction in the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (C(1)C(6)ImTFSI). Raman and NMR spectroscopies are complementarily used to decipher the chemical reactions that occur during synthesis and to clarify the state of the ionic liquid up to, and well beyond, gelation. We find that the ionic liquid concentration affects both the reaction rate and the gelation time (t(gel)). In addition, NMR and Raman data reveal inherently different roles of the cation and the anion in the gelation process. While the oscillating behavior of the TFSI Raman signature at ~740 cm(-1) is mainly an effect of solvation and chemical composition, the evolution of the relative chemical shifts (Δδ) of different hydrogen atoms on the imidazolium correlates with gelation, as does the width of the chemical shift of -OH containing groups (δ(OH)). We also observe that in the confined state the TFSI anion preferably adopts the cisoid conformation and experiences a stronger ion-ion interaction.

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Section: Introductionmentioning

confidence: 99%

An investigation of the sol–gel process in ionic liquid–silica gels by time resolved Raman and 1H NMR spectroscopy

Martinelli

Nordstierna

2012

Phys. Chem. Chem. Phys.

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“…This is mainly due to their unique physical and chemical properties which include negligibly small vapor pressure, high thermal stability, and high ionic conductivity [1][2][3][4][5]. They can be used in various fields, such as catalysis, organic synthesis, electrochemistry, biochemistry and material engineering [6][7][8][9][10]. Moreover, they are expected to substitute the traditional industrial solvents, most of which are volatile organic compounds (VOCs), a major source of environmental pollution [1,11].…”

Section: Introductionmentioning

confidence: 99%

“…Gutowski et al reported the formation and stabilities of ionic liquids based on ab initio electronic structure calculations [23,24]. Meng et al [25] demonstrated the existence of the H bonds in [Bmim] + [PF 6 ] À using the ab initio method. The H bonds in a series of 1-alkyl-3-methylimidazolium hexafluorophosphates ([Rmim] + [PF 6 ] À ) have also been studied by calculating Raman and IR spectra at the B3LYP/6-311+G(2d,p) level [26].…”

Section: Introductionmentioning

confidence: 99%

DFT study on the structure and cation–anion interaction of amino acid ionic liquid of [C3mim]+[Glu]−

Zhang

Chen

Wang

et al. 2010

Journal of Molecular Structure: THEOCHEM

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“…However, at liquid concentrations high enough to achieve decent conductivities, these membranes suffer from mechanical weakness and bad liquid retention [5]. The polymerization of ionic liquids has also been investigated, with the aim to immobilize the anion and enhance the mobility of the electrochemically active species [9,10] .It is only very recently that some interest has arisen in the synthesis of hybrid materials that combine ionic liquids with inorganic porous matrices. The feasibility of nano-confined ionic liquids in matrices of silica has been reported and the potentiality of ionogels as alternative materials of technological importance discussed.…”

Section: Introductionmentioning

confidence: 99%

The Preparation of N-Heptyl Pyridine Tetrafluoroborate

Zhang

Tian

et al. 2014

AMM

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The halogenated hydrocarbon and pyridine are used in the synthesis of room temperature ionic liquid intermediates bromided N-heptyl pyridine HEPB, and the nuclear magnetic resonance instrument and the intermediate infrared spectrometer are used in chemical structure characterization, so it is determined that the synthesis is the room temperature ionic intermediates HEPB. We use differential scanning calorimetric method for the determination of HEPB melting point and enthalpy change. We use the double decomposition reaction of HEPB and NaBF4in acetone for the synthesis of HEP-BF4ionic liquids. We use infrared spectrometer for the structure characterization, it is proved that we have gotten HEP-BF4room temperature ionic liquids. Solvent polarity and acid alkali both will have an influence on ultraviolet spectrum diagram displacement of room temperature ionic liquid, so in the research of ultraviolet spectrum diagram of ionic liquids and other solvent mixed solution, it is necessary to indicate which solvent is used.

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Design and evaluation of imidazolium cation-based ionic liquids having double-armed anions for selective cation conduction

Cited by 12 publications

References 23 publications

An investigation of the sol–gel process in ionic liquid–silica gels by time resolved Raman and 1H NMR spectroscopy

An investigation of the sol–gel process in ionic liquid–silica gels by time resolved Raman and 1H NMR spectroscopy

DFT study on the structure and cation–anion interaction of amino acid ionic liquid of [C3mim]+[Glu]−

The Preparation of N-Heptyl Pyridine Tetrafluoroborate

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