Mapping the “Extra Solvent Power, ESP” of Ionic Liquids for Monomers, Polymers and Globular Nanoparticles

2017 ◽  
Author(s):  
Jose A. Pomposo
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Linear Polymers ◽  
Green Solvents ◽  
Ionic Polymers ◽  
First Time ◽  
Solvent Power

Understanding the miscibility behavior of ionic liquid (IL) / monomer, IL / polymer and IL / nanoparticle mixtures is critical for the use of ILs as green solvents in polymerization processes, and to rationalize recent observations concerning the superior solubility of some proteins in ILs when compared to standard solvents. In this work, the most relevant results obtained in terms of a three-component Flory-Huggins theory concerning the “Extra Solvent Power, ESP” of ILs when compared to traditional non-ionic solvents for monomeric solutes (case I), linear polymers (case II) and globular nanoparticles (case III) are presented. Moreover, useful ESP maps are drawn for the first time for IL mixtures corresponding to case I, II and III. Finally, a potential pathway to improve the miscibility of non-ionic polymers in ILs is also proposed.

Mapping the “Extra Solvent Power, ESP” of Ionic Liquids for Monomers, Polymers and Globular Nanoparticles

2017 ◽  
Author(s):  
Jose A. Pomposo
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Linear Polymers ◽  
Green Solvents ◽  
Ionic Polymers ◽  
First Time ◽  
Solvent Power

Understanding the miscibility behavior of ionic liquid (IL) / monomer, IL / polymer and IL / nanoparticle mixtures is critical for the use of ILs as green solvents in polymerization processes, and to rationalize recent observations concerning the superior solubility of some proteins in ILs when compared to standard solvents. In this work, the most relevant results obtained in terms of a three-component Flory-Huggins theory concerning the “Extra Solvent Power, ESP” of ILs when compared to traditional non-ionic solvents for monomeric solutes (case I), linear polymers (case II) and globular nanoparticles (case III) are presented. Moreover, useful ESP maps are drawn for the first time for IL mixtures corresponding to case I, II and III. Finally, a potential pathway to improve the miscibility of non-ionic polymers in ILs is also proposed.

Brønsted acidic ionic liquid-catalyzed dehydrative formation of isosorbide from sorbitol: introduction of a continuous process

2017 ◽  
Vol 7 (10) ◽  
pp. 2065-2073 ◽  
Author(s):  
Jie Deng ◽  
Bao-Hua Xu ◽  
Yao-Feng Wang ◽  
Xian-En Mo ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Continuous Process ◽  
Efficient Synthesis ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
First Time

A highly efficient synthesis of isosorbide from sorbitol was developed using Brønsted acidic ionic liquids (BILs) as the catalyst for the first time.

scholarly journals Crystalline-like structures and multilayering in Langmuir films of ionic liquids at the air–water interface

2016 ◽  
Vol 52 (32) ◽  
pp. 5585-5588 ◽  
Author(s):  
Eduardo. J. M. Filipe ◽  
Pedro Morgado ◽  
Miguel Teixeira ◽  
Karina Shimizu ◽  
Nathalie Bonatout ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Langmuir Films ◽  
Water Interface ◽  
Air Water Interface ◽  
Reversible Formation ◽  
First Time

Langmuir films of [C18mim][NTf2] ionic liquid exhibited, for the first time, the reversible formation of crystalline-like structures at the surface of water, compatible with the formation of multilayers.

scholarly journals Ionic liquid promoted Diels-Alder Reaction between anthrone and maleimides

2010 ◽  
Vol 8 (2) ◽  
pp. 356-360 ◽  
Author(s):  
Nitin Mirgane ◽  
Sandip Kotwal ◽  
Anil Karnik
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Alder Reaction ◽  
Dual Role ◽  
Diels Alder ◽  
Environmentally Benign ◽  
Green Solvents ◽  
Imidazolium Ionic Liquid ◽  
Diels Alder Reaction

AbstractIonic liquids (IL) are gaining importance as green solvents. Imidazolium ionic liquid [bmim]+[Cl]−, an environmentally benign solvent, was found to promote the Diels-Alder reaction between anthrone and maleimides at room temperature with excellent yields. The ionic liquid played a dual role as solvent and catalyst.

scholarly journals PRAVADOLINE SYNTHESIS USING AN IMIDAZOLIUM-BASED IONIC LIQUID AS A GREEN SOLVENT

2011 ◽  
Vol 14 (3) ◽  
pp. 79-86
Author(s):  
Nam Thanh Son Phan ◽  
Ha Vu Le
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Acid Catalyst ◽  
High Yield ◽  
Viet Nam ◽  
Pharmaceutical Chemical ◽  
Green Solvents ◽  
Green Solvent ◽  
1H And 13C Nmr ◽  
Lewis Acid Catalyst

An easily accessible ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) was synthesized, and characterized using 1H and 13C NMR, and MS. The ionic liquid was demonstrated to be an efficient green solvent for the synthesis of pravadoline, one of non-steroidal drugs. High yield was achieved without the presence of an anhydrous Lewis acid catalyst. The reaction was also successfully carried out using other imidazolium-based ionic liquids, including 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM][PF6]), and 1-octyl-3- methylimidazolium hexafluorophosphate ([OMIM][PF6]). To our best knowledge, this is the first report in Viet Nam on the synthesis of a pharmaceutical chemical in ionic liquids as green solvents.

scholarly journals Efficient and Reusable Iron Catalyst to Convert CO2 into Valuable Cyclic Carbonates

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1089
Author(s):  
Ana P. C. Ribeiro ◽  
Peter Goodrich ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic Effect ◽  
Iron Catalyst ◽  
Cyclic Carbonate ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
First Time

The production of cyclic carbonates from CO2 cycloaddition to epoxides, using the C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz = 1H-pyrazol-1-yl) as a catalyst, is achieved in excellent yields (up to 98%) in a tailor-made ionic liquid (IL) medium under mild conditions (80 °C; 1–8 bar). A favorable synergistic catalytic effect was found in the [FeCl2{κ3-HC(pz)3}]/IL system. Notably, in addition to exhibiting remarkable activity, the catalyst is stable during ten consecutive cycles, the first decrease (11%) on the cyclic carbonate yield being observed during the 11th cycle. The use of C-scorpionate complexes in ionic liquids to afford cyclic carbonates is presented herein for the first time.

Measurement and Modeling of Solubility of Galactose in Aqueous Ionic Liquids, 1-Butyl-3-Methyl Imidazolium Bromide, 1-Hexyl-3-Methyl Imidazolium Bromide and 1-Butyl-3-Methylimidazolium Chloride at T = (298.15 And 308.15) K

2019 ◽  
Vol 25 (4) ◽  
pp. 319-330
Author(s):  
Mohammad Taghi Zafarani-Moattar ◽  
Hemayat Shekaari ◽  
Elnaz Mazaher Haji Agha
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Mole Fraction ◽  
Gravimetric Method ◽  
Green Solvents ◽  
Salting Out ◽  
Liquid Solutions ◽  
Activity Coefficient Models

Background: Saccharides are considered as abundant, cheap and renewable starting materials for chemicals and fuels. Recently, ionic liquids have been used as green solvents for saccharides. The solubility values of galactose in aqueous ionic liquid solutions are not available. Thus, the main objective of this research was to determine the solubility of galactose in aqueous solutions containing ionic liquids, 1-butyl-3-methyl imidazolium bromide, [BMIm]Br, 1-butyl-3-methylimidazolium chloride [BMIm]Cl and 1-hexyl-3-methyl imidazolium bromide, [HMIm]Br at different mole fractions of ionic liquids at T = (298.15 and 308.15) K. Methods: In this study, the gravimetric method was used to measure the solubility of galactose in aqueous ionic liquids solutions. Results: The solubility values of galactose in water and aqueous ionic liquid solutions were correlated with the activity coefficient models of Wilson, NRTL, modified NRTL, NRF-NRTL, and UNIQUAC. Conclusion: It was concluded that with increasing the mole fraction of ionic liquids, the solubility values of galactose decrease and in fact all of these ionic liquids show salting-out effect on aqueous galactose solutions and this behavior is stronger in ionic liquid 1-butyl-3-methylimidazolium chloride.

Gating effects of conductive polymeric ionic liquids

2018 ◽  
Vol 6 (30) ◽  
pp. 8242-8250 ◽  
Author(s):  
Senbin Chen ◽  
Falk Frenzel ◽  
Bin Cui ◽  
Fang Gao ◽  
Antonella Campanella ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Polymeric Ionic Liquids ◽  
Poly Ionic Liquid ◽  
First Time

Poly(ionic liquid)s with different topologies are investigated towards the gating effects for the first time.

scholarly journals Synthesis of magnetic polymeric ionic liquid nanocomposites by the Radziszewski reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (68) ◽  
pp. 42979-42985 ◽  
Author(s):  
Alexander Castro-Grijalba ◽  
Emilia M. Reyes-Gallardo ◽  
Rodolfo G. Wuilloud ◽  
Rafael Lucena ◽  
Soledad Cárdenas
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Polymeric Ionic Liquids ◽  
Polymeric Ionic Liquid ◽  
Sorption Ability ◽  
Acidic Compounds ◽  
First Time

The application of the Radziszewski reaction is proposed for the first time for the synthesis of magnetic polymeric ionic liquids. After their characterization, the sorption ability of the nanocomposites towards acidic compounds have been evaluated.

Extending the shell-isolated nanoparticle-enhanced Raman spectroscopy approach to interfacial ionic liquids at single crystal electrode surfaces

2014 ◽  
Vol 50 (94) ◽  
pp. 14740-14743 ◽  
Author(s):  
Meng Zhang ◽  
Li-Juan Yu ◽  
Yi-Fan Huang ◽  
Jia-Wei Yan ◽  
Guo-Kun Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Dft Calculations ◽  
Single Crystal ◽  
Electrode Surfaces ◽  
Structural Details ◽  
Single Crystal Electrode ◽  
First Time

We employ, for the first time, SHINERS to study single crystal electrode surfaces in ionic liquids, and combine DFT calculations to elucidate the structural details of imidazolium-based ionic liquid–Au single crystal electrode interfaces.

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