244193-50-8Relevant articles and documents
Excess molar properties for binary systems of CnMIM-BF 4 ionic liquids with alkylamines in the temperature range (298.15 to 318.15) K. Experimental results and theoretical model calculations
Malek, Naved I.,Ijardar, Sushma P.,Oswal, Shantilal B.
, p. 540 - 553 (2014)
The experimental densities ρ and speeds of sound u for pure 1-hexyl-3-methylimidazolium tetrafluoroborate ([C6mim][BF 4]), 1-octyl-3-methylimidazolium tetrafluoroborate ([C 8mim][BF4]), butylamine (BA), and octylamine (OA) from (293.15 to 323.15) K and binary mixtures of the ionic liquids (ILs) with amines at (298.15, 308.15, and 318.15) K have been reported. The isentropic compressibilities, κS, Rao's molar sound functions, R, intermolecular free lengths, Lf, excess molar volumes, VmE, and excess isentropic compressibilities, κSE for binary mixtures were derived. The VmE and κSE of the binary mixtures are negative and decrease with increasing temperature, with the exception of VmE being positive for [C6mim][BF4] and [C8mim] [BF4] + OA in the high IL mole fraction region. The Prigogine-Flory-Patterson (PFP) theory has been applied to interpret the u and VmE data.
White-light emission from HMIMBF4-TiO4(A) colloidal hybrid electrolyte and surface modification of TiO2 using ionic liquid in hybrid optoelectronic devices
Thanikachalam, Venugopal,Seransenguttuvan, Balu,Jayabharathi, Jayaraman
, p. 2899 - 2912 (2020)
White-light emission from the colloidal hybrid electrolyte 1-hexyl-3-methylimidazolium tetrafluoroborate (HMIMBF4)-TiO2(A) is discussed herein. The HMIMBF4-TiO2(A) hybrid electrolyte showed an increase in the lifetime as compared to bare anatase TiO2 (TiO2(A)). The blue emission at 420 nm from HMIMBF4 is attributed to the π-π? transition of the imidazolium moiety, and strong green and yellow emissions at 517 and 568 nm, respectively, are due to defect emissions of TiO2 NPs. In the HMIMBF4-TiO2(A) colloidal hybrid electrolyte, the combination of blue emission from the ionic liquid and defect emission from TiO2 NPs produced intense white light. Fabricated HyLEDs showed enhanced device efficiency by the surface modification of rutile TiO2 (TiO2(R)) using HMIMBF4 ionic liquid. HMIMBF4, with a thickness of 250/850 nm, exhibited maximum current efficiency (ηc-cd A-1) of 322.22/361.53, power efficiency (ηp-lm W-1) of 6.2/7.1, external quantum efficiency (ηex-%) of 322.22/361.53 and luminance (ηL-cd m-2) of 70.14/1490.95. Spontaneously aligned dipole polarization within the ionic liquid HMIMBF4 layer reduced the electron injection barrier and led to enhanced device efficiencies.
Various metal organic frameworks combined with imidazolium, quinolinum and benzothiazolium ionic liquids for removal of three antibiotics from water
Yohannes, Alula,Li, Jing,Yao, Shun
, (2020/10/02)
In this research, imidazolium, quinolinum and benzothiazolium based ionic liquids (ILs) were immobilized on a metal organic framework (MOF) by solvent impregnation or capillary action. The synthesized IL@MOF composite materials were characterized by FTIR, XRD, SEM and TGA methods and then applied in removal of tetracyclines (TCs) from aqueous samples. The presence of ionic liquids significantly improved the adsorption efficiency of the metal organic framework, with 82% or higher removal percentage was obtained for the three target TCs while the pristine MOFs adsorption efficiency was below 50%. This could be attributed to the ability of ILs to make complex interaction with target drugs via multiple intermolecular forces. Experimental results revealed the effects of three significant factors including pH, temperature and solid-liquid ratio, and optimum adsorption efficiency could be achieved at pH 8 and 30 °C when solid-liquid ratio = 1:2 was adopted. The adsorption kinetics was properly fitted with pseudo-second order model and Redlich-Peterson model could be used to describe the adsorption isotherm for three antibiotics; moreover, the adsorption was an endothermic and spontaneous process in nature. Finally, the adsorbed TCs could be desorbed efficiently and the performance of the IL@MOF sorbent was further verified by actual water samples.
