Ionic liquid/water mixture promoted organic transformations

Reddy, Pedavenkatagari Narayana; Padmaja, P.; Reddy, Basireddy V. Subba; Gundla, Rambabu

doi:10.1039/c5ra08625f

Cited by 49 publications

(20 citation statements)

References 133 publications

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“…Chemical and physical properties such as viscosity, polarity, hydrophobicity, and Lewis acidity and basicity can be adjusted by judicious combination of a cationic and an anionic component in the IL. These unique features of ILs have potentially been exploited in various elds of analytical chemistry, 2-4 electrochemistry, [5][6][7] synthesis and catalysis, [8][9][10] and materials chemistry. [11][12][13] In particular, several reviews have investigated extensively water-immiscible hydrophobic ILs composed of a bis(triuoromethanesulfonyl)imide (Tf 2 N À ) anion as extraction media in liquid-liquid distribution (LLD).…”

Section: Introductionmentioning

confidence: 99%

Role of Tf₂N⁻ anions in the ionic liquid–water distribution of europium(iii) chelates

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Role of Tf₂N⁻ anions in the ionic liquid–water distribution of europium(iii) chelates

et al. 2017

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“…Ionic liquid has unique advantages, including good thermal stability, strong solubility, nonvolatility, free design of anion and anion, etc. It can replace traditional organic solvents and catalysts to achieve green synthesis of PASP [26]. Then, a ring-opening graft modification strategy was adopted to modify PASP with both carboxyl and hydroxyl groups.…”

Section: Ring-opening Graft Modification Of Paspmentioning

confidence: 99%

Green and High Effective Scale Inhibitor Based on Ring-Opening Graft Modification of Polyaspartic Acid

2021

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Polyaspartic acid (PASP)-based green scale inhibitor has great potential application in water treatment. Here, we first synthesized PASP in ionic liquid. Then, an effective PASP-based green scale inhibitor was synthesized by ring-opening graft modification of PASP with both aspartic acid (ASP) and monoethanolamine (MEA). Its chemical composition was characterized by gel chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), and 1H nuclear magnetic resonance (1H NMR). Scale inhibition efficiency was measured by static scale inhibition tests. The results showed that the new PASP-based scale inhibitor has high scale inhibition to both CaCO3 and Ca3(PO4)2. When the concentration was increased to 2 mg/L, the inhibition efficiency of the new PASP-based scale inhibitor was 99% for CaCO3, while when the concentration was raised to only 4 mg/L, its inhibition efficiency increased to 100% for Ca3(PO4)2. Scanning electronic microscopy (SEM) and X-ray diffraction (XRD) were used to analyze the changes of crystal structure for CaCO3 and Ca3(PO4)2 after adding the new PASP-based scale inhibitor. The crystal size of CaCO3 and Ca3(PO4)2 became smaller and the crystal form became amorphous after adding the modified PASPs compared with adding pure PASP. Moreover, the modified PASP showed good biodegradation performance.

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“…ILs can be used as co-solvents in several applications, not only to increase the solubility of target species but also to tune the important physicochemical properties, such as conductivity and viscosity toward a more efficient industrial performance and operational conditions. In recent years, mixtures of ILs either with other ILs (IL/ IL mixtures) [62,63], molecular liquids (water, organic solvents) [64][65][66], or polymers [67] have gained such an interest that has been labeled as the fourth evolution of ILs [68]. IL mixtures do not fall in the definition of salt in solution, neither their physicochemical properties follow mixing behavior of molecular liquid mixtures, which create the need to develop new fundamental and structural/dynamic research.…”

Section: Ionic Liquids As Co-solventsmentioning

confidence: 99%

Molecular Interactions in Ionic Liquids: The NMR Contribution towards Tailored Solvents

Lopes¹,

Barrulas

Paiva

et al. 2020

Nuclear Magnetic Resonance

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Ionic liquids have been on the spotlight of chemical research field in the last decades. Their physical properties (low vapor pressure, thermal stability, and conductivity) and the possibility of fine tuning make them a versatile class of compounds for a wide range of applications, such as catalysis, energy, and material sciences. Ionic liquids can establish multiple intermolecular interactions with solutes such as electrostatic, van der Waals, or hydrogen bonds. The prospect of designing ionic liquid structures toward specific applications has attracted the attention to these alternative solvents. However, their rational design demands a molecular detailed view, and Nuclear Magnetic Resonance is a unique and privileged technique for this purpose, as it provides atomic resolution and at the same time enables the study of dynamic information. In this chapter, we provide an overview about the application of Nuclear Magnetic Resonance spectroscopy techniques as a methodology for the rational design of ionic liquids as solvents for small organic compounds, CO 2 capture, and polymers such as cellulose focusing mainly in the last 10 years.

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Ionic liquid/water mixture promoted organic transformations

Abstract: Wet ILs constitutes a new class of solvents with their own new and interesting properties. The IL–water mixing makes it easy to control the properties of the solution and the formation of these ionic liquid mixtures increases synthetic flexibility.

Cited by 49 publications

References 133 publications

Role of Tf₂N⁻ anions in the ionic liquid–water distribution of europium(iii) chelates

Role of Tf₂N⁻ anions in the ionic liquid–water distribution of europium(iii) chelates

Green and High Effective Scale Inhibitor Based on Ring-Opening Graft Modification of Polyaspartic Acid

Molecular Interactions in Ionic Liquids: The NMR Contribution towards Tailored Solvents

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Ionic liquid/water mixture promoted organic transformations

Abstract: Wet ILs constitutes a new class of solvents with their own new and interesting properties. The IL–water mixing makes it easy to control the properties of the solution and the formation of these ionic liquid mixtures increases synthetic flexibility.

Cited by 49 publications

References 133 publications

Role of Tf2N− anions in the ionic liquid–water distribution of europium(iii) chelates

Role of Tf2N− anions in the ionic liquid–water distribution of europium(iii) chelates

Green and High Effective Scale Inhibitor Based on Ring-Opening Graft Modification of Polyaspartic Acid

Molecular Interactions in Ionic Liquids: The NMR Contribution towards Tailored Solvents

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Product

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Role of Tf₂N⁻ anions in the ionic liquid–water distribution of europium(iii) chelates

Role of Tf₂N⁻ anions in the ionic liquid–water distribution of europium(iii) chelates