Synthesis and characterization of protic ionic liquids containing cyclic amine cations and tetrafluoroborate anion

Wu, Tzi‐Yi; Su, Shyh Gang; Gung, Shr-Tusen; Lin, Ming‐Wei; Lin, Yen‐Chung; Ou-Yang, Wen-Chung; Sun, I‐Wen; Lai, C. A.

doi:10.1007/bf03246212

Cited by 44 publications

(16 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The molar refraction ( R m ) of the liquid was calculated from experimental data of both molar volume ( V m ) and the refractive index ( n D ) at the studied temperatures using the Lorentz-Lorenz relation [25]:

R_{m} = \frac{n_{D}^{2} - 1}{n_{D}^{2} + 2} \cdot V_{m}

…”

Section: Resultsmentioning

confidence: 99%

Effect of Temperature on the Physico-Chemical Properties of a Room Temperature Ionic Liquid (1-Methyl-3-pentylimidazolium Hexafluorophosphate) with Polyethylene Glycol Oligomer

Chen

Lin

et al. 2011

IJMS

View full text Add to dashboard Cite

A systematic study of the effect of composition on the thermo-physical properties of the binary mixtures of 1-methyl-3-pentyl imidazolium hexafluorophosphate [MPI][PF6] with poly(ethylene glycol) (PEG) [Mw = 400] is presented. The excess molar volume, refractive index deviation, viscosity deviation, and surface tension deviation values were calculated from these experimental density, ρ, refractive index, n, viscosity, η, and surface tension, γ, over the whole concentration range, respectively. The excess molar volumes are negative and continue to become increasingly negative with increasing temperature; whereas the viscosity and surface tension deviation are negative and become less negative with increasing temperature. The surface thermodynamic functions, such as surface entropy, enthalpy, as well as standard molar entropy, Parachor, and molar enthalpy of vaporization for pure ionic liquid, have been derived from the temperature dependence of the surface tension values.

show abstract

R_{m} = \frac{n_{D}^{2} - 1}{n_{D}^{2} + 2} \cdot V_{m}

…”

Section: Resultsmentioning

confidence: 99%

Effect of Temperature on the Physico-Chemical Properties of a Room Temperature Ionic Liquid (1-Methyl-3-pentylimidazolium Hexafluorophosphate) with Polyethylene Glycol Oligomer

Chen

Lin

et al. 2011

IJMS

View full text Add to dashboard Cite

show abstract

“…Ions at the top of this figure are the most hydrophilic ions. EhimBF 4 was synthesized and purified using the methods described by Wu 29 and Burrell. 30 Briefly, 1-ethylimidazole was added in excess to aqueous tetrafluoroboric acid in an ice bath.…”

Section: A Sample Preparation and Characterizationmentioning

confidence: 99%

The influence of hydrophilicity on the orientational dynamics and structures of imidazolium-based ionic liquid/water binary mixtures

Bailey

Wang

Fayer

2018

The Journal of Chemical Physics

View full text Add to dashboard Cite

The orientational dynamics and microscopic structures of imidazolium-based ionic liquids of varying hydrophilicity were investigated using optical heterodyne-detected optical Kerr effect (OHD-OKE) spectroscopy and atomistic simulations. Hydrophilicity was tuned via anion selection, cation alkyl chain length, and the addition of a strong hydrogen bond donor on the cation (protic ionic liquid). In the hydrophobic samples, which saturate at relatively low water concentration, OHD-OKE data display Debye Stokes Einstein (DSE) behavior as a function of water concentration. The DSE behavior indicates that the microstructures of the hydrophobic ionic liquid/water mixtures do not fundamentally change as a function of water concentration. The hydrophilic samples have two regimes of different DSE behaviors demonstrating the presence of two structural regimes depending on water concentration. These experimental results indicate that in hydrophilic ionic liquid/water samples, significant structural changes occur to accommodate high water concentrations, while hydrophobic samples become water saturated because the restructuring of local ionic structures is unfavorable. Atomistic simulations show that the local ionic microstructures experience distinct changes in these hydrophilic ionic liquid/water binary samples because of the delicate interplay of intermolecular interactions among imidazolium cations, hydrophilic anions, and water molecules.

show abstract

“…Room-temperature ionic liquids (RTILs) have extensive applications in industry and chemistry due to their benefit properties including, negligible vapor pressure, nonflammability, reasonable thermal and chemical stability, excellent ionic conductivity, wide electrochemical windows, large liquid range, tunable hydrophobicity, and green nature. Physical properties of the RTILs are adaptable by judicious selection of the cation and anion [1]. In view of the excellent physicochemical characteristics of the ionic liquids, they have been used in lithium batteries [2], electrode position [3], solar cells [4], and electric double layer capacitors [5], and as solvent, reagent and catalyst in organic synthesis [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Untitled

Dehghani

Merajoddin

Zare

2019

Asian J. Nanosci. Mater.

View full text Add to dashboard Cite

Acidic ionic liquid pyridinium-N-sulfonic acid bisulfate ([Py-SO3H][HSO4]) has effectively catalyzed the production of 3, 4-dihydropyrimidin-2 (1H)ones via the condensation reaction of the arylaldehydes with β-ketoesters and urea under solvent-free conditions. Due to the dual-functionality of [Py-SO3H][HSO4] (bearing acidic and basic sites), it was highly effective and general catalyst for the reaction. Additionally, an attractive mechanism for the dual-functionality of the catalyst was proposed.

show abstract

Synthesis and characterization of protic ionic liquids containing cyclic amine cations and tetrafluoroborate anion

Cited by 44 publications

References 16 publications

Effect of Temperature on the Physico-Chemical Properties of a Room Temperature Ionic Liquid (1-Methyl-3-pentylimidazolium Hexafluorophosphate) with Polyethylene Glycol Oligomer

Effect of Temperature on the Physico-Chemical Properties of a Room Temperature Ionic Liquid (1-Methyl-3-pentylimidazolium Hexafluorophosphate) with Polyethylene Glycol Oligomer

The influence of hydrophilicity on the orientational dynamics and structures of imidazolium-based ionic liquid/water binary mixtures

Untitled

Contact Info

Product

Resources

About