Related references
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Article
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YoonKook Park et al.
Summary: This experimental study investigates the densities, refractive indices, and viscosities of nine deep eutectic solvents (DESs) at different temperatures. Two different DES families were prepared using different hydrogen bond acceptors (HBAs) and hydrogen bond donors (HBDs) to examine the effect of HBA molecular structure on physical properties. The results show that DESs based on one HBA have higher density and viscosity values, but lower refractive index values compared to DESs based on the other HBA. The study also assesses the impact of temperature and mole ratio on the physical properties of DESs, and successfully correlates viscosity data with temperature using three equations.
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(2023)
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Ali Pourali et al.
Summary: Liquid phase microextraction techniques are a miniaturized version of traditional liquid-liquid extraction, using only a small amount of solvent to extract analytes from a sample. They have been widely applied in the analysis of various analytes in food, pharmaceuticals, and beverages. This review focuses on the application of these techniques in dairy products and discusses the advantages and disadvantages of different liquid phase microextraction methods.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
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Srijan Chatterjee et al.
Summary: In this study, the microscopic structure and dynamics of a deep eutectic solvent were investigated using ultrafast vibrational spectroscopy and molecular dynamics simulations. The results showed distinct differences in solvent fluctuations and solute reorientation dynamics with changing compositions, which were attributed to variations in the fluctuations of the different intercomponent hydrogen bonds.
JOURNAL OF CHEMICAL PHYSICS
(2023)
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Evgeniia Khairullina et al.
Summary: In this paper, a rapid laser-induced synthesis method for copper micropatterns on the surface of oxide glass is proposed using deep eutectic solvents (DESs) as copper plating solutions. It is demonstrated that the deposition rate of copper can be increased and micropatterns with high adhesion and resistance close to pure metal can be created by 532-nm continuous wave laser irradiation. This method is promising for practical applications in producing new printable microelectronic devices, and the resulting copper micropatterns can be used as working electrodes for non-enzymatic glucose.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
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Yuling Zhang et al.
Summary: In this study, amino acid-polyol deep eutectic solvents (DESs) were used to dissolve dealkaline lignin (DAL) efficiently. It was found that the addition of water improved the mass transfer and activated the reaction sites in the DESs, leading to enhanced lignin solubilities. This work provides insights into the structure-performance relationship of hydrated DESs and highlights the importance of water in improving their versatility and potential applications.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
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Samaneh Barani Pour et al.
Summary: In this study, we investigated the interaction between hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD) in binary mixtures. The findings revealed that the presence of Cl- anion is crucial for the formation of deep eutectic solvents (DESs). Moreover, the structural stability of DESs based on fatty acids (FAs) and choline chloride (Ch(+)Cl(-)) at different ratios was examined using molecular dynamics simulations in water. It was observed that the interaction between the chloride anion and the cation's hydroxyl group causes HBA to transition to the water-rich phase. These atomic sites play a significant role in the stability of eutectic mixtures containing FAs and Cl- anion. Notably, the binary mixture with a mole percent of 30% [Ch(+)Cl(-)] and 70% FAs exhibited higher stability compared to other ratios.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Mrityunjay K. Jha et al.
Summary: Hydrophobic deep eutectic solvents (HDESs) have gained attention as green alternative media for extracting compounds from water, and this study uses molecular dynamics simulations to understand the microscopic structure, dynamics, and interactions in N,N-diisooctylacetamide (DOA) plus decanol (DEO) based HDESs. The analysis reveals nanoscale heterogeneous structure in all compositions, with polarity ordering observed in DOA:DEO (1:2) HDES at longer length-scales compared to other compositions. Liquid morphologies show polar and apolar self-segregation. Strong hydrogen bonding interactions dominate the microstructure of these HDESs, with DEO-DEO and DEO-DOA interactions playing a significant role. The translational mobility of the components decreases as DOA concentration increases, with DEO molecules diffusing faster in bulk HDES. Water content leads to enhanced segregation and weaker hydrogen bond interactions between DOA and DEO.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Ankita S. Chandak et al.
Summary: In recent years, deep eutectic solvents (DESs) have gained popularity as environmentally friendly solvents for various operations. This study evaluates the use of a green solvent in the preparation of Drug delivery systems (DDSs) and delivery vehicles made of a deep eutectic system (DES) composed of Choline Chloride (ChCl) and Urea (U). The molecular interaction between Tramadol hydrochloride and DES was measured experimentally through density and sound velocity measurements.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Emanuela Mangiacapre et al.
Summary: Natural deep eutectic solvents (NADES) are mixtures composed by environmentally responsible components that can establish an extended hydrogen bonding network, resulting in a lower melting point. Water-based NADES, with water as a major component, show potential in various applications. However, the chemical physical properties of choline-rich mixtures, including the concentration of deep eutectic solvents, are not well established. This study characterizes water:ChCl mixtures and explores their properties across different ratios and temperatures.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
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Laura Lomba et al.
Summary: In this manuscript, two deep eutectic solvents (DES) were prepared and characterized from an ecotoxicological perspective using three biomodels. The results showed that the ecotoxicity of these solvents depends on the biomodel used and the water content, with lower toxicity values for solvents with higher water content. However, the ecotoxicity of all solvents was found to be quite low, with EC50 values above 1000 mg/L in all cases.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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Andrey Shishov et al.
Summary: Research found that carboxylic acid precursor in deep eutectic solvents is crucial for effective metal separation. Solvent synthesized from deep eutectic solvents provides high extraction recovery of metals. Control of temperature and time can effectively separate metals in plant samples.
Article
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Chunlu Li et al.
Summary: This study focused on converting carbohydrates into platform compounds using a deep eutectic solvent as a green solvent. The physical properties of the solvent mixture were determined experimentally and correlated, while some physical parameters were calculated. The experimental results showed a change in hydrogen bonds in the mixture with increasing D-glucose content.
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(2022)
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Ekaterina A. Avilova et al.
Summary: In this study, a method for fabricating electrically conductive copper patterns and films of arbitrary topology using improved laser-induced synthesis was developed. The efficiency of the process was significantly increased through acceptor substrate pretreatment, auxiliary glass substrates, and optional laser post-processing. The potential of laser-induced periodic surface structures for tuning functional properties of the tracks was also observed.
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Chemistry, Physical
Renu Sharma et al.
Summary: Deep eutectic solvents (DESs) have gained recognition as analogues of ionic liquids (ILs) in modern green chemistry due to their inexpensive and easy preparation method. In this study, DESs were formulated and their physicochemical properties were studied in binary mixtures with water. The excess molar properties were calculated and mathematical models were used to evaluate the validity of predicting these properties for the studied mixtures.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
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Hugo Monteiro et al.
Summary: The addition of water to the choline chloride-urea mixture results in a unique structural transformation, leading to non-monotonic changes in choline-water and choline-choline coordination. Molecular dynamics simulations provide insights into the molecular mechanisms behind this transformation, highlighting the role of force fields in accurately describing the dynamics of deep eutectic solvents.
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Summary: Deep eutectic solvents (DESs), a new class of environmentally friendly solvents, have gained attention for their ability to extract and separate targeted analytes from complex samples. DESs are liquid at room temperature and possess excellent thermal and electrical stability. They are sustainable solvents with non-volatile, non-flammable, chemically stable, and biocompatible properties. DESs can be tailored to meet specific needs due to their tunable physicochemical properties. This review summarizes the use of DESs-based adsorbent materials and highlights their unique properties in extraction and separation applications.
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Summary: This study systematically investigated the separation of metals in oil matrices using deep eutectic solvents based on choline chloride and different hydrogen bond donors. Deep eutectic solvents containing carboxylic acids and sugars showed the highest extraction efficiency, and the addition of water as a precursor had a significant effect on metal separation.
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Feng Zhu et al.
Summary: This study evaluated the aggregation behavior of a surfactant in deep eutectic solvents (DESs) and its effects on the electrochemical behavior of copper ions. The results showed that increasing the concentration of the surfactant led to an increase in the viscosity of the DES and a decrease in its ionic conductivity. The rate of the oxidation-reduction reactions of copper ions was also influenced by the surfactant concentration. Additionally, the aggregation of the surfactant near the critical micelle concentration played an important role in controlling the morphology of copper.
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Summary: Understanding the effects of water incorporation on the physicochemical properties of eutectic solvents is crucial for their application in various fields. This study demonstrates that the timing of water addition plays a significant role in influencing the conductivity, density, refraction index, and thermal stability of a fructose-citric acid-water-based deep eutectic solvent. Dilution water has a more noticeable impact on these properties, while structural water has a more pronounced effect on fluorescence intensity. The findings suggest that controlling the moment of water addition can be a strategy to shape the properties of eutectic solvents for analytical, pharmaceutical, and industrial applications.
JOURNAL OF MOLECULAR LIQUIDS
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Juho Antti Sirvio et al.
Summary: Eutectic mixtures and deep eutectic solvents are potential green media for lignocellulose pre-treatment. This study investigated the influence of added water on the properties and functioning of choline chloride and urea mixtures. The results showed that water participated in the formation of molecular clusters and affected the hydrogen bond acidity and basicity of the mixtures. When treating cellulose fibers, non-ideality and absence of water in the mixtures were found to be advantageous under mixing conditions, while water-containing mixtures increased the diameter of cellulose fibers in the absence of mixing.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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Alberto Gutierrez et al.
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JOURNAL OF MOLECULAR LIQUIDS
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Summary: A combined experimental and theoretical approach was used to study the effect of water on the properties and nanostructuring of choline chloride: ethylene glycol deep eutectic solvent. The results showed a large hydrophilic character of the solvent due to the efficient hydrogen bonding between water molecules and different components of the eutectic. The impact of water on the studied fluid depends largely on the concentration range, but the properties of the eutectic solvent can be maintained even with a relatively high water content.
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