scholarly journals Paradigm for efficient synthesis of bio-based polycarbonate with deep eutectic solvents as catalysts by inhibiting the degradation of molecular chains

2021 ◽  
Author(s):  
Weiwei Wang ◽  
Zifeng Yang ◽  
Yaqin Zhang ◽  
Hongyan He ◽  
Wenjuan Fang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Catalytic System ◽  
Deep Eutectic Solvents ◽  
Efficient Synthesis ◽  
Hydrogen Bond Donors

In this study, an efficient catalytic system composed of deep eutectic solvents (DESs) was developed by adjusting the basicity of hydrogen bond donors (HBDs) to synthesize poly (isosorbide) carbonate (PIC)...

Structural variation of transition metal–organic frameworks using deep eutectic solvents with different hydrogen bond donors

2019 ◽  
Vol 48 (27) ◽  
pp. 10199-10209 ◽  
Author(s):  
Ming-Yu Zhao ◽  
Jian-Nan Zhu ◽  
Peng Li ◽  
Wei Li ◽  
Ting Cai ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Transition Metal ◽  
Structural Variation ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Deep Eutectic Solvents ◽  
One Dimensional ◽  
Metal Organic ◽  
Hydrogen Bond Donors

Seven transition metal–organic frameworks with structures ranging from one-dimensional chains to three-dimensional networks have been synthesized in deep eutectic solvents.

Manufacturing Acidities of Hydrogen-Bond Donors in Deep Eutectic Solvents for Effective and Reversible NH3 Capture

2020 ◽  
Vol 8 (35) ◽  
pp. 13408-13417 ◽  
Author(s):  
Wen-Jing Jiang ◽  
Jian-Bo Zhang ◽  
Ya-Ting Zou ◽  
Hai-Long Peng ◽  
Kuan Huang
Keyword(s):  
Hydrogen Bond ◽  
Deep Eutectic Solvents ◽  
Hydrogen Bond Donors

scholarly journals Novel hydrophobic deep eutectic solvent for vortex-assisted liquid phase microextraction of common acaricides in fruit juice followed by HPLC-UV determination

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 30102-30108
Author(s):  
Setareh Rostami-Javanroudi ◽  
Masoud Moradi ◽  
Kiomars Sharafi ◽  
Nazir Fattahi
Keyword(s):  
Hydrogen Bond ◽  
Liquid Phase ◽  
Fruit Juice ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Straight Chain ◽  
Hydrogen Bond Acceptor ◽  
Liquid Phase Microextraction ◽  
Different Types ◽  
Hydrogen Bond Donors

In this research, several novel hydrophobic deep eutectic solvents (DESs) were prepared using methyltrioctylammonium chloride (MTOAC) as the hydrogen bond acceptor (HBA) and different types of straight chain alcohols as hydrogen bond donors (HBDs).

scholarly journals Phenolic hydrogen bond donors in the formation of non-ionic deep eutectic solvents: the quest for type V DES

2019 ◽  
Vol 55 (69) ◽  
pp. 10253-10256 ◽  
Author(s):  
Dinis O. Abranches ◽  
Mónia A. R. Martins ◽  
Liliana P. Silva ◽  
Nicolas Schaeffer ◽  
Simão P. Pinho ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Strong Interaction ◽  
Deep Eutectic Solvents ◽  
Type V ◽  
Hydrogen Bond Donors

An abnormal strong interaction was identified, which was found to be the key to prepare non-ionic DES, that may be classified as type V.

Polyhydroxyalkanoate-derived hydrogen-bond donors for the synthesis of new deep eutectic solvents

2019 ◽  
Vol 21 (11) ◽  
pp. 3116-3126 ◽  
Author(s):  
Katarzyna Haraźna ◽  
Karolina Walas ◽  
Patrycja Urbańska ◽  
Tomasz Witko ◽  
Wojciech Snoch ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Deep Eutectic Solvents ◽  
Hydrogen Bond Donors

Polyhydroxyalkanoate monomers can serve as deep eutectic solvents components.

Metal-free redox active deep eutectic solvents

2017 ◽  
Vol 53 (72) ◽  
pp. 9983-9985 ◽  
Author(s):  
J. C. Goeltz ◽  
L. N. Matsushima
Keyword(s):  
Hydrogen Bond ◽  
Room Temperature ◽  
Deep Eutectic Solvents ◽  
Ammonium Salts ◽  
Metal Free ◽  
Freezing Points ◽  
Redox Active ◽  
Hydrogen Bond Donors

Metal-free deep eutectic solvents composed of hydrogen bond donors and viologen-based ammonium salts exhibit reversible electrochemistry with viologen concentrations of 4.2 M and freezing points near room temperature.

scholarly journals Reactive Deep Eutectic Solvents (RDESs): A New Tool for Phospholipase D-Catalyzed Preparation of Phospholipids

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 655
Author(s):  
Chiara Allegretti ◽  
Francesco G. Gatti ◽  
Stefano Marzorati ◽  
Letizia Anna Maria Rossato ◽  
Stefano Serra ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ethylene Glycol ◽  
Phospholipase D ◽  
Choline Chloride ◽  
Reaction Medium ◽  
Deep Eutectic Solvents ◽  
Polar Head ◽  
Process Implementation ◽  
Reaction Media ◽  
Hydrogen Bond Donors

The use of Reactive Deep Eutectic Solvents (RDESs) in the preparation of polar head modified phospholipids (PLs) with phospholipase D (PLD)-catalyzed biotransformations has been investigated. Natural phosphatidylcholine (PC) has been submitted to PLD-catalyzed transphosphatidylations using a new reaction medium composed by a mixture of RDES/buffer. Instead of exploiting deep eutectic solvents conventionally, just as the reaction media, these solvents have been designed here in order to contribute actively to the synthetic processes by participating as reagents. RDESs were prepared using choline chloride or trimethyl glycine as hydrogen-bond acceptors and glycerol or ethylene glycol, as hydrogen-bond donors as well as nucleophiles for choline substitution. Specifically designed RDES/buffer reaction media allowed the obtainment of PLs with optimized yields in the perspective of a sustainable process implementation.

scholarly journals The Influence of Hydrogen Bond Donors on the CO2 Absorption Mechanism by the Bio-Phenol-Based Deep Eutectic Solvents

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7167
Author(s):  
Ze Wang ◽  
Zonghua Wang ◽  
Jie Chen ◽  
Congyi Wu ◽  
Dezhong Yang
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Hydrogen Bond ◽  
Co2 Capture ◽  
Deep Eutectic Solvents ◽  
Reaction Pathways ◽  
Co2 Absorption ◽  
Absorption Mechanism ◽  
New Type ◽  
Steric Hinderance ◽  
Hydrogen Bond Donors

Recently, deep eutectic solvents (DESs), a new type of solvent, have been studied widely for CO2 capture. In this work, the anion-functionalized deep eutectic solvents composed of phenol-based ionic liquids (ILs) and hydrogen bond donors (HBDs) ethylene glycol (EG) or 4-methylimidazole (4CH3-Im) were synthesized for CO2 capture. The phenol-based ILs used in this study were prepared from bio-derived phenols carvacrol (Car) and thymol (Thy). The CO2 absorption capacities of the DESs were determined. The absorption mechanisms by the DESs were also studied using nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), and mass spectroscopy. Interestingly, the results indicated that CO2 reacted with both the phenolic anions and EG, generating the phenol-based carbonates and the EG-based carbonates, when CO2 interacted with the DESs formed by the ILs and EG. However, CO2 only reacted with the phenolic anions when the DESs formed by the ILs and 4CH3-Im. The results indicated that the HBDs impacted greatly on the CO2 absorption mechanism, suggesting the mechanism can be tuned by changing the HBDs, and the different reaction pathways may be due to the steric hinderance differences of the functional groups of the HBDs.

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