Ionic Liquids as Green Solvents

2003 ◽  
Keyword(s):  
Ionic Liquids ◽  
Green Solvents

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.

Ionic Liquids for Topical Delivery in Cancer

2020 ◽  
Vol 26 (41) ◽  
pp. 7520-7532 ◽  
Author(s):  
Ana Rita Dias ◽  
João Costa-Rodrigues ◽  
Cátia Teixeira ◽  
Cristina Prudêncio ◽  
Paula Gomes ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Clinical Applications ◽  
Great Promise ◽  
Topical Drug Delivery ◽  
Green Solvents ◽  
2Nd Generation ◽  
Windows Of Opportunity ◽  
Pharmaceutical Technology ◽  
Skin Cancers ◽  
Per Se

: The unique properties of ionic liquids make them quite appealing for diverse applications, from “green” solvents (1st generation ionic liquids) to finely tuned materials (2nd generation ionic liquids). A decade ago, a 3rd generation of ionic liquids emerged which is focused on their prospective clinical applications, either as drugs per se or as adjuvants in drug formulations. In recent years, research focused on the use of ionic liquids for topical drug delivery has been increasing and holds great promise towards clinical application against skin cancers. This article highlights the growing relevance of ionic liquids in medicinal chemistry and pharmaceutical technology, which is opening new windows of opportunity.

Green Chemistry and Green Solvents: An Overview

2020 ◽  
Vol 7 (3) ◽  
pp. 314-325
Author(s):  
Barla Karuna Devi ◽  
Swathi Naraparaju ◽  
Chaganti Soujanya ◽  
Sayan Dutta Gupta
Keyword(s):  
Ionic Liquids ◽  
Green Chemistry ◽  
Chemical Reaction ◽  
Supercritical Co2 ◽  
Environmental Problems ◽  
Green Solvents ◽  
Eutectic Mixtures ◽  
Organic Carbonates

: Green chemistry emphasizes designing novel routes to overcome health and environmental problems that occur during a chemical reaction. Green solvents are used in place of conventional solvents that are hazardous to both human and the environment. Solvents like water, ionic liquids, supercritical CO2, biosolvents, organic carbonates, and deep eutectic mixtures can be used as green solvents. The review focuses on the properties, applications, and limitations of these solvents.

scholarly journals Measurement of the hydrogen bond acceptance of ionic liquids and green solvents by the 19F solvatomagnetic comparison method

2021 ◽  
Author(s):  
Christian Laurence ◽  
Sergui Mansour ◽  
Daniela Vuluga ◽  
Julien Legros
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Comparison Method ◽  
Green Solvents ◽  
Reliable Measurement

A 19F solvatomagnetic comparison of 4-fluorophenol and 4-fluoroanisole yields a more reliable measurement of the hydrogen-bond acceptance of ionic liquids and green solvents than the solvatochromic comparison method.

Ionic liquids: green solvents and reactive compounds? Reaction of tri-n-butylmethylphosphonium dimethylphosphate with elemental sulfur

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Natalia Tarasova ◽  
Efrem Krivoborodov ◽  
Alexey Zanin ◽  
Yaroslav Mezhuev
Keyword(s):  
Ionic Liquids ◽  
Nmr Spectroscopy ◽  
Oxygen Atom ◽  
Elemental Sulfur ◽  
Green Solvents ◽  
Reaction Products ◽  
Mechanism Of Interaction

AbstractThe opening of the S8 ring with the formation of linear sulfur oligomers in the presence of tri-n-butylmethylphosphonium dimethylphosphate is shown. The reaction products are separated and characterized with 1H, 13C, 31P, 17O NMR spectroscopy, HD-MS, MALDI spectroscopy and XRD. It is shown that dimethylphosphate-anion is active in the reaction, and the addition of sulfur atoms occurs via the oxygen atom of dimethylphosphate-anion. It is found that a mixture of products is formed, which differ in the number of sulfur atoms in the chain. The assumptions were made about the mechanism of interaction of sulfur with tri-n-butylmethylphosphonium dimethylphosphate.

Synthesis of organophosphorus compounds using ionic liquids

2018 ◽  
Vol 34 (5) ◽  
pp. 727-740 ◽  
Author(s):  
Lavinia Macarie ◽  
Nicoleta Plesu ◽  
Smaranda Iliescu ◽  
Gheorghe Ilia
Keyword(s):  
Ionic Liquids ◽  
Organophosphorus Compounds ◽  
Inorganic Compounds ◽  
Green Solvents ◽  
High Solubility ◽  
Chemical Reagents ◽  
Reaction Media ◽  
Organophosphorus Chemistry ◽  
Synthesis Reactions ◽  
Toxic Organic Solvents

Abstract Organophosphorus chemistry was developed in the last decade by promoting the synthesis reactions using ionic liquids either as solvent or catalyst. Ionic liquids (ILs), the so-called “green solvents”, have gained interest in the synthesis of organophosphorus compounds as alternatives to flammable and toxic organic solvents and catalysts. ILs have beneficial properties because they provide high solubility for many organic and inorganic compounds or metal complexes, have no vapor pressure, and are reusable. Also, in some cases, they can enhance the reactivity of chemical reagents. In this review, we aimed at showing the synthesis of different organophosphorus compounds under green and mild conditions using ILs as reaction media or catalysts, according to a trend developed in the last years. A novel trend is to perform these syntheses under microwave irradiation conditions together with ILs as solvents and catalysts.

scholarly journals Extractive Deep Desulfurization of Liquid Fuels Using Lewis-Based Ionic Liquids

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Swapnil A. Dharaskar ◽  
Kailas L. Wasewar ◽  
Mahesh N. Varma ◽  
Diwakar Z. Shende
Keyword(s):  
Ionic Liquids ◽  
Liquid Fuel ◽  
Extraction Process ◽  
Operating Conditions ◽  
Liquid Fuels ◽  
Green Solvents ◽  
Model Liquid ◽  
New Class ◽  
Deep Desulfurization ◽  
Desulfurization Efficiency

A new class of green solvents, known as ionic liquids (ILs), has recently been the subject of intensive research on the extractive desulfurization of liquid fuels because of the limitation of traditional hydrodesulfurization method. In present work, eleven Lewis acid ionic liquids were synthesized and employed as promising extractants for deep desulfurization of the liquid fuel containing dibenzothiophene (DBT) to test the desulfurization efficiency. [Bmim]Cl/FeCl3was the most promising ionic liquid and performed the best among studied ionic liquids under the same operating conditions. It can remove dibenzothiophene from the model liquid fuel in the single-stage extraction process with the maximum desulfurization efficiency of 75.6%. It was also found that [Bmim]Cl/FeCl3may be reused without regeneration with considerable extraction efficiency of 47.3%. Huge saving on energy can be achieved if we make use of this ionic liquids behavior in process design, instead of regenerating ionic liquids after every time of extraction.

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