NMR and Raman Spectroscopy Monitoring of Proton/Deuteron Exchange in Aqueous Solutions of Ionic Liquids Forming Hydrogen Bond: A Role of Anions, Self-Aggregation, and Mesophase Formation

2013 ◽  
Vol 117 (35) ◽  
pp. 10211-10220 ◽  
Author(s):  
Vytautas Klimavicius ◽  
Zofia Gdaniec ◽  
Jonas Kausteklis ◽  
Valdemaras Aleksa ◽  
Kestutis Aidas ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Raman Spectroscopy ◽  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Mesophase Formation ◽  
Self Aggregation

Self-Aggregation Behavior of Fluorescent Carbazole-Tailed Imidazolium Ionic Liquids in Aqueous Solutions

2010 ◽  
Vol 114 (1) ◽  
pp. 340-348 ◽  
Author(s):  
Bin Dong ◽  
Yan’an Gao ◽  
Yijin Su ◽  
Liqiang Zheng ◽  
Jingkun Xu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Aggregation Behavior ◽  
Imidazolium Ionic Liquids ◽  
Self Aggregation

scholarly journals Alternative probe for the determination of the hydrogen-bond acidity of ionic liquids and their aqueous solutions

2017 ◽  
Vol 19 (18) ◽  
pp. 11011-11016 ◽  
Author(s):  
Pedro P. Madeira ◽  
Helena Passos ◽  
Joana Gomes ◽  
João A. P. Coutinho ◽  
Mara G. Freire
Keyword(s):  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Chemical Shifts ◽  
Nmr Chemical Shifts ◽  
Hydrogen Bond Acidity ◽  
C Nmr

The alternative probe pyridine-N-oxide allows the determination of the hydrogen-bond acidity of both neat ionic liquids and their aqueous solutions based on 13C NMR chemical shifts.

Aggregation of some water-soluble derivatives of chitin in aqueous solutions: Role of the degree of acetylation and effect of hydrogen bond breaker

2012 ◽  
Vol 87 (1) ◽  
pp. 687-694 ◽  
Author(s):  
Olga E. Philippova ◽  
Evgeniya V. Korchagina ◽  
Evgeny V. Volkov ◽  
Valery A. Smirnov ◽  
Alexei R. Khokhlov ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Aqueous Solutions ◽  
Water Soluble ◽  
Degree Of Acetylation ◽  
Derivatives Of

scholarly journals Temperature-Induced Change of Water Structure in Aqueous Solutions of Some Kosmotropic and Chaotropic Salts

2021 ◽  
Vol 22 (23) ◽  
pp. 12896
Author(s):  
Ferenc Kovács ◽  
Hui Yan ◽  
Heng Li ◽  
Sándor Kunsági-Máté
Keyword(s):  
Hydrogen Bond ◽  
Aqueous Solutions ◽  
Water Clusters ◽  
Water Structure ◽  
Layered System ◽  
Temperature Dependent ◽  
Structure Of Water ◽  
Chaotropic Salts

The hydrogen bond structure of water was examined by comparing the temperature dependent OH-stretching bands of water and aqueous NaClO4, KClO4, Na2SO4, and K2SO4 solutions. Results called attention to the role of cations on top of the importance of anions determining the emerging structure of a multi-layered system consisting single water rings or multi-ring water-clusters.

Self-Aggregation of Catanionic Surface Active Ionic Liquids in Aqueous Solutions

2015 ◽  
Vol 18 (3) ◽  
pp. 421-428 ◽  
Author(s):  
Wenwen Xu ◽  
Qian Zhang ◽  
Hongtu Wei ◽  
Jieqiong Qin ◽  
Li Yu
Keyword(s):  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Surface Active ◽  
Self Aggregation

scholarly journals Raman Spectroscopy for the Competition of Hydrogen Bonds in Ternary (H2O–THF–DMSO) Aqueous Solutions

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3666
Author(s):  
Liu ◽  
Zhang ◽  
Huang ◽  
Wu ◽  
Ouyang
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bond ◽  
Raman Spectroscopy ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Aqueous Solutions ◽  
Dimethyl Sulfoxide ◽  
Water Molecules ◽  
Bonding Theory ◽  
Hydrogen Bonded

The effects of hydrogen bonds on the molecular structure of water-tetrahydrofuran (H2O–THF), water-dimethyl sulfoxide (H2O–DMSO), and water-tetrahydrofuran-dimethyl sulfoxide (H2O–THF–DMSO) in binary aqueous solutions and ternary aqueous solutions were studied using Raman spectroscopy. The results indicate that in the binary aqueous solution, the addition of THF and DMSO will generate hydrogen bonds with water molecules, resulting in changes in the peak positions of S=O bonds and C–O bonds. Compared with the binary aqueous solutions, the hydrogen bonds between DMSO and THF, and the hydrogen bonds between DMSO and H2O in the ternary aqueous solutions are competitive, and the hydrogen bond competition is susceptible to water content. In addition, the formation of hydrogen bonds will destroy the fully hydrogen-bonded water and make it change to the partially hydrogen-bonded water. By fitting the spectra into the three Gaussian components assigned to water molecules with different hydrogen bonding (HB) environments, these spectral features are interpreted by a mechanism that H2O in different solution systems has equal types of water molecules with similar HB degrees-fully hydrogen-bonded H2O (FHW) and partially hydrogen-bonded H2O (PHW). The ratio of the intensity transition from FHW to PHW is determined based on Gaussian fitting. Therefore, the variation of hydrogen bond competition can be supplemented by the intensity ratio of PHW/FHW ((IC2 + IC3)/IC1). This study provides an experimental basis for enriching the hydrogen bonding theory of multivariate aqueous solution systems.

Ionic liquids as selective extractants and ion carriers of heavy metal ions from aqueous solutions utilized in extraction and membrane separation

2015 ◽  
Vol 31 (2) ◽  
Author(s):  
Beata Pospiech ◽  
Wojciech Kujawski
Keyword(s):  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Metal Ion ◽  
Membrane Separation ◽  
Research Area ◽  
Separation Processes ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions

AbstractThis paper analyzes the applications of various ionic liquids (ILs) as metal ion carriers and extractants utilized for the separation of metal cations from aqueous solutions. Subsequently, an up-to-date review of the use of ILs in polymer inclusion membranes is presented. ILs represent a promising group of extractants and ion carriers of metal ions in extraction and membrane separation processes. The removal of heavy metals ions from aqueous solutions using ILs indicates an extensive and promising research area. It is expected that the role of ILs will gradually increase as the worldwide implementation of separation methods in recovery of metal ions from various aqueous solutions is growing quickly.

Probing the self-aggregation of ionic liquids in aqueous solutions using density and speed of sound data

2013 ◽  
Vol 59 ◽  
pp. 43-48 ◽  
Author(s):  
M. Tariq ◽  
F. Moscoso ◽  
F.J. Deive ◽  
A. Rodriguez ◽  
M.A. Sanromán ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Speed Of Sound ◽  
The Self ◽  
Self Aggregation ◽  
Sound Data
Sign in / Sign up

Export Citation Format

Share Document