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.
The one-pot synthesis of butyl-1H-indol-3-alkylcarboxylic acid derivatives in ionic liquid as potent dual-acting agent for management of BPH
Chen, Kaixuan,Jiang, Zhenzhou,Liu, Shuwen,Xi, Baomin,Yang, Fubiao,Zeng, Li-Yan,Zeng, Yunong
, (2020/09/18)
Based on the SAR of both α1-AR antagonists and 5α-reductase (5AR) inhibitors, the dual-acting agent 4-(1-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl)-1H-indol-3-yl)butanoic acid 4aaa was designed against BPH and synthesized by two steps of N-alkylation. One-pot protocol towards 4aaa was newly developed. With IL [C6min]Br as solvent, the yield of 4aaa was increased to 75.1% from 16.0% and the reaction time was shortened in 1.5 h from 48 h. 25 derivatives structurally based on arylpiperazine and indolyl butyric acid with alkyl linker were prepared. The protocol was futher extended to get another 14 derivatives wherein O-alkylation was involved, and applied to the synthesis of biologically efficient molecules DPQ and Aripiprazole. Expectedly, compound 4aaa exhibited dual inhibition of α1-AR and 5α-reductase, and exhibited no obvious cytotoxicity against human cells. The pharmacokinetic properties of 4aaa was also determined.
