Ionic liquids (ILs) have gained a lot of attention as alternative solvents in many fields of science in the last two decades. It is known that the type of anion has a significant influence on the macroscopic properties of the IL. To gain insights into the molecular mechanisms responsible for these effects it is important to characterize these systems at the microscopic level. Such information can be obtained from nuclear spin-relaxation studies which for compounds with natural isotope abundance...
[NMR paper] Protein stability analysis in ionic liquids by 19F NMR.
Protein stability analysis in ionic liquids by 19F NMR.
Related Articles Protein stability analysis in ionic liquids by 19F NMR.
Anal Bioanal Chem. 2019 Apr 24;:
Authors: Cheng K, Wu Q, Jiang L, Liu M, Li C
Abstract
Ionic liquids have been extensively used as environmentally friendly solvents for enzymatic reactions and other biological systems. Understanding the mechanism of how ionic liquids affect protein stability is crucial for the biological reaction processes and protein storage using ionic liquids as solvents. Although...
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04-26-2019 03:47 PM
NMR Studies of Protic Ionic Liquids
From The DNP-NMR Blog:
NMR Studies of Protic Ionic Liquids
Overbeck, Viviane, and Ralf Ludwig. “NMR Studies of Protic Ionic Liquids.” In Annual Reports on NMR Spectroscopy, 95:147–90. Elsevier, 2018.
https://doi.org/10.1016/bs.arnmr.2018.05.002.
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11-25-2018 06:02 AM
[NMR paper] Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins.
Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins.
Related Articles Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins.
Angew Chem Int Ed Engl. 2017 Sep 17;:
Authors: Ludwig R, Khudozhitkov AE, Stange P, Golub B, Paschek D, Stepanov AG, Kolokolov DI
Abstract
We present the first...
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09-19-2017 04:40 PM
[NMR paper] Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins
Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins
We present the first deuteron quadrupole coupling constants (DQCC) for selected protic ionic liquids (PILs) measured by solid-state NMR spectroscopy. The experimental data are supported by dispersion-corrected density functional theory (DFT-D3) calculations and molecular dynamics (MD) simulations. The DQCCs of the N-D bond in the triethylammonium cations are the lowest reported for deuterons in PILs indicating...
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09-18-2017 10:41 AM
Ionic liquids: Enzymatic cellulose processing
Ionic liquids: Enzymatic cellulose processing
http://www.spectroscopynow.com/common/images/thumbnails/1514834b12b.jpgThe promise of room temperature ionic liquids (RTILs) as alternatives to toxic and inflammable volatile organic solvents for green chemistry has been on the boil for at least a couple of decades. Now, team has found that enzymatic activity can be sustained in processing cellulose, from wood, for conversion of this raw material into other useful compounds.
Read the rest at Spectroscopynow.com
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12-01-2015 10:21 AM
Electron Spin–Lattice Relaxation Mechanisms of Nitroxyl Radicals in Ionic Liquids and Conventional Organic Liquids: Temperature Dependence of a Thermally Activated Process
From The DNP-NMR Blog:
Electron Spin–Lattice Relaxation Mechanisms of Nitroxyl Radicals in Ionic Liquids and Conventional Organic Liquids: Temperature Dependence of a Thermally Activated Process
A detailed understanding of the electron-spin relaxation mechanisms in polarizing agents used for DMP-NMR spectroscopy is crucial for the understanding of the DNP process and to optimize polarizing agents for different DNP applications. The entire study was performed at X-Band frequencies (9 GHz, 14 MHz 1H) and provides many details about the relaxation behavior of nitroxide radicals -...
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07-08-2015 11:11 PM
Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control
From The DNP-NMR Blog:
Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control
Sakaguchi, S., et al., Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2013. 317(0): p. 679-684.
http://www.sciencedirect.com/science/article/pii/S0168583X13008872
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01-23-2014 01:37 AM
Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control
From The DNP-NMR Blog:
Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control
Sakaguchi, S., et al., Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2013(0).
http://www.sciencedirect.com/science/article/pii/S0168583X13008872
(15)N NMR studies provide insights into physico-chemical properties of room-temperature ionic liquids
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