Article
Chemistry, Physical
Katarzyna Wilpiszewska, Dorota Skowronska
Summary: The efficiency of potato starch plasticization using two deep eutectic solvents (DESs) based on choline chloride (CC) and glycerol (G) or urea (U) has been evaluated. Both DESs exhibited solubility towards starch, but CCU showed significantly higher solvent power than CCG. The XRD result indicated that both DESs were able to penetrate the starch crystal regions and form stable hydrogen bonds with the hydroxylic groups of the polysaccharide. The viscosity and thermal stability of the starch material depended on the DES content, with a decrease in viscosity and thermal stability observed with increasing DES content. The gelatinization temperature was strongly affected by the type of DES, occurring at a lower temperature in CCU compared to CCG. The plasticization efficiency was tested using modulated DSC, and it was found that CCG had higher plasticizing efficiency compared to CCU.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Editorial Material
Chemistry, Physical
Andrew P. Abbott, Karen J. Edler, Alister J. Page
Summary: When selecting a solvent for a given solute, the commonly used idiom "like dissolves like" suggests using polar solvents for polar solutes. However, in deep eutectic solvents (DES), the components can be of various types, allowing for the solubilization of a wide range of solutes and the control of phase behavior through mixture design.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Engineering, Environmental
Chun-Chi Chen, Chiun-Yao Wang, Yen-Hui Huang
Summary: The study demonstrates a new strategy for capturing nitrogen dioxide (NO2) using deep eutectic solvents (DESs) and their aqueous mixtures. The results show that ChCl-based DESs have excellent NO2 absorption capability, which increases with increasing HBD content. Additionally, the DES aqueous mixtures retain high NO2 solubility while exhibiting a lower viscosity after the introduction of water.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Tatjana Juric, Denis Uka, Berta Barta Hollo, Branislav Jovic, Branko Kordic, Boris M. Popovic
Summary: The properties of natural deep eutectic solvents depend on the structure of hydrogen bond donors (HBD) present in the solvents, while the thermal stability is influenced by the HBD structure. These solvents can be considered tailor-made, as their properties can be easily adjusted to suit different applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Bricker D. Like, Christina E. Uhlenbrock, Matthew J. Panzer
Summary: Deep eutectic solvents (DESs) are a rapidly expanding class of liquid phase mixtures that have many useful features. However, there is currently no widely accepted criterion for identifying whether a particular mixture is a DES or not. This study introduces a quantitative metric based on the molar excess Gibbs energy of a eutectic mixture and proposes a threshold value to classify a eutectic system as a DES.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Usman Saeed, Asim Laeeq Khan, Mazhar Amjad Gilani, Muhammad Roil Bilad, Asad Ullah Khan
Summary: This study focused on utilizing deep eutectic solvents (DESs) impregnated into PVDF membranes for the separation of CO2 from CH4. The DES-SLMs showed high CO2 permeability and selectivity, indicating potential for new pathways in CO2 capture using DESs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Analytical
Eman O. Osman, Amr M. Mahmoud, Sally S. El-Mosallamy, Hala B. El-Nassan
Summary: This study reported the first synthesis of 4H-pyran derivatives using electrochemical synthesis conditions and deep eutectic solvents in a one pot reaction. By optimizing the reaction conditions, high yields of pure pyran derivatives could be obtained in a short amount of time. The use of deep eutectic solvents also eliminated the need for a supporting electrolyte, improving the sustainability of the catalyst.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Mila Manolova, Reinhard Boeck, Ingolf Scharf, Thomas Mehner, Thomas Lampke
Summary: This study investigates the electrodeposition of palladium alloys using different metal components in a choline chloride/urea based deep eutectic solvent. The addition of Ag(I) is found to enhance the overall metal deposition rate, while the layer thickness and composition of the produced alloys can be varied by changing the deposition mode.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Maninder Meenu, Vasudha Bansal, Sudha Rana, Nitya Sharma, Vinod Kumar, Vaishali Arora, Monika Garg
Summary: Anthocyanins are extracted using alternative solvents such as ionic liquids, deep eutectic solvents, and natural deep eutectic solvents, which are more environmentally friendly and efficient compared to conventional solvents. Acid-based deep eutectic solvents with 20-30% water content showed the highest anthocyanin extraction yield. Ultrasonic-assisted extraction was the most common and efficient method, and DES-based extracts exhibited the highest stability and antioxidant activity. Fruits and their by-products are the most commonly used samples, while cereal and legumes are less explored.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Agricultural Engineering
A. Varilla-Mazaba, J. A. Raggazo-Sanchez, M. Calderon-Santoyo, J. Gomez-Rodriguez, M. G. Aguilar-Uscanga
Summary: This study optimized the delignification of sugarcane bagasse using deep eutectic solvents (DES) and found that increasing temperature and reaction time improves lignin removal. The results demonstrated that DES is an efficient and useful method for lignin removal from lignocellulosic biomass, with the added benefit of converting cellulose into fermentable sugars.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Physical
Poonam Patyar, Akhtar Ali, Naved Malek
Summary: This study investigates the effect of water on the thermodynamic properties of deep eutectic solvents composed of choline chloride as a hydrogen bond acceptor and different hydrogen bond donors. The findings provide insights into the non-ideal behavior of the mixtures through measurements of density and discussion of excess molar volume, which can be utilized in industrial processes and thermodynamic modeling of DES systems.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Applied
Bahareh Abtahi, Hossein Tavakol
Summary: An environmentally friendly method using CuI catalyst was developed for the synthesis of various benzofuran derivatives, with a one-pot, 3-component reaction in a specific deep eutectic solvent. The method showed easy workup and high yields, preparing 12 different derivatives in 7 hours at 80 degrees C.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Ping Liu, Kaixing Cai, Mao Liu, Meisong Xu, Tianxiang Zhao
Summary: This study reports an effective strategy using hydroxyl-rich deep eutectic solvents (DESs) for capturing sulfur hexafluoride (SF6) and investigates the physical properties of different DESs as well as the effects of absorption conditions on SF6 capture performance.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Kimia Jafari, Mohammad Hossein Fatemi, Luis Lugo
Summary: This study presents the preparation and characterization of new nanofluids based on deep eutectic solvents (DESs) consisting of ethylene glycol (EG), choline chloride (ChCl), and water. The nanofluids with dispersed spherical MgO nanoparticles in DESs of different compositions were designed and their stability was tested. The thermophysical properties, such as thermal conductivity and density, were measured and the effects of nanoparticles' mass fraction, temperature, and water content were examined. The study found that the nanofluids based on DES 1ChCl:5EG showed the best stability and the addition of water increased the thermal conductivity of the nanofluids.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Jianhua Song, Lin Xu, Xiaoping Wang, Chonghao Chen, Weichong Wang, Haoyu Long, Muhammad Asif Nawaz, Dianhua Liu
Summary: Separation of catalysts remains a challenge in classical homogeneous catalysis with noble metals. This study utilizes rationally tailored acidic deep eutectic solvents (ADESs) as acid promoters, phase separators, and extractants in Pd-catalyzed methoxycarbonylation of ethylene, achieving high catalytic activity and selectivity, as well as long-term stability towards the desired product. The findings contribute to the development of catalyst recycling and the design of deep eutectic solvents (DESs), with potential industrial applications.
Article
Chemistry, Physical
Manjari Chakraborty, Tasnim Ahmed, Ranu Satish Dhale, Debashis Majhi, Moloy Sarkar
JOURNAL OF PHYSICAL CHEMISTRY B
(2018)
Article
Chemistry, Multidisciplinary
Manjari Chakraborty, Tasnim Ahmed, Moloy Sarkar
Article
Chemistry, Physical
Manjari Chakraborty, Sahadev Barik, Amita Mahapatra, Moloy Sarkar
Summary: The study investigated the properties of three different mixtures with a common anion through thermophysical properties, fluorescence measurements, and NMR techniques. The results indicated that the excess molar volume in imidazolium-based IL-IL mixtures might be linked to the alkyl chain of the imidazolium cation, and lowering of density in pyrrolidinium IL mixtures could give rise to free volume. The presence of free volume in the mixtures was supported by time-resolved fluorescence and NMR studies, showing deviations from ideal behavior.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Manjari Chakraborty, Sahadev Barik, Amita Mahapatra, Moloy Sarkar
Summary: The study investigates the impact of lithium ions on the structure and dynamics of ionic liquids, specifically monocationic ILs and dicationic ILs. The addition of lithium ions significantly alters the microscopic behavior of the ILs, especially in the apolar regions. This research provides insights into how lithium ions influence the nanostructural organization of ILs and highlights their potential as electrolytes in battery applications.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Chemistry, Multidisciplinary
Amita Mahapatra, Sahadev Barik, Lakkoji Satish, Manjari Chakraborty, Moloy Sarkar
Summary: This study investigates the potential of a pyrrolidinium-based dicationic ionic liquid (DIL) in stabilizing ct-DNA structure, and finds that DIL can effectively be used as a better storage medium for ct-DNA compared to monocationic ionic liquids (MILs). The extra electrostatic interaction between the cationic head group of DIL and the phosphate backbone of DNA is primarily responsible for providing better stabilization to ct-DNA.
Article
Chemistry, Multidisciplinary
Suraj Prakash Tripathy, Satyabrata Subudhi, Asheli Ray, Pragyandeepti Behera, Gayatri Swain, Manjari Chakraborty, Kulamani Parida
Summary: Hydrogen and oxygen generation through photocatalytic water splitting using the MgIn2S4/UiO-66-NH2 composite was studied. The composite showed enhanced photocatalytic performance due to the interaction between MgIn2S4 and UiO-66-NH2 and effective charge separation. Among the various composites, the 5 wt % MgIn2S4/UiO-66-NH2 composite exhibited the highest H2 and O2 evolution rates. This work provides insights for developing robust Zr-MOF-based nanocomposite photocatalysts.
Article
Chemistry, Physical
Sahadev Barik, Manjari Chakraborty, Amita Mahapatra, Moloy Sarkar
Summary: This study aims to understand the differences in behavior between deep eutectic solvents (DESs) and room temperature ionic liquids (RTILs) in terms of their structure, dynamics, and intra- and intermolecular interactions. The research investigates three different ILs and one DES with similar functionalities through ensembled average and single-molecule spectroscopic techniques. The results show that, despite having similar functionalities, the DES and hydroxyl ILs exhibit significantly different microscopic behaviors, indicating the importance of intermolecular interactions in governing the behaviors of these solvent systems.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Debashis Majhi, Manjari Chakraborty, Sahadev Barik, Amita Mahapatra, Moloy Sarkar
Summary: The study aimed to understand the impact of the chemical structure of a cationic moiety in an ionic liquid on its overall structural organization in the fluid state through resonance energy transfer studies. Non-branched ILs showed a more favorable RET interaction compared to branched ILs, with the difference attributed to both electronic and steric effects.
CHEMICAL PHYSICS IMPACT
(2021)
Article
Chemistry, Physical
Amita Mahapatra, Manjari Chakraborty, Sahadev Barik, Moloy Sarkar
Summary: The study compared the behavior of imidazolium-based and pyrrolidinium-based dicationic ionic liquids in terms of intermolecular interactions, microscopic structure, and dynamics, revealing differences between the two types of liquids and their corresponding mono-cationic counterparts. The results showed distinct characteristics such as polarity, dynamics, and structural organization between the imidazolium and pyrrolidinium-based DILs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Ramesh Kumar Gajula, Subhrajit Mohanty, Manjari Chakraborty, Moloy Sarkar, M. Jaya Prakash
Summary: The triphenylamine-derived fluorescent covalent organic cage molecule (F-COC) showed enhanced emission in chloroform solution or vapor, likely due to the orientation polarizability of chloroform. Additionally, the fluorescence emission intensity of F-COC gradually increased with the dielectric constant of the solvent, peaking in chloroform and decreasing in solvents with higher dielectric constants. The computational modeling illustrated deviations in the excited state energy with the solvent's dielectric constant and revealed the specific role of hydrogen bonding interactions with chloroform. Picric acid detection was studied using an F-COC fluorescence quenching technique, and solid-state fluorescence was enhanced through complexation with metal ions such as Zn2+ and Cu2+, as well as harmful Cd2+ and Pb2+ ions.
NEW JOURNAL OF CHEMISTRY
(2021)
