Assessment of the Role of 2,2,2-Trifluoroethanol Solvent Dynamics in Inducing Conformational Transitions in Melittin: An Approach with Solvent 19F Low-Field NMR Relaxation and Overhauser Dynamic Nuclear Polarization Studies

2020 ◽  
Vol 124 (28) ◽  
pp. 5993-6003
Author(s):  
Bhawna Chaubey ◽  
Arnab Dey ◽  
Abhishek Banerjee ◽  
N. Chandrakumar ◽  
Samanwita Pal
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Nmr Relaxation ◽  
Conformational Transitions ◽  
Low Field ◽  
Solvent Dynamics ◽  
Polarization Studies ◽  
Low Field Nmr

Dynamic Nuclear Polarization Studies of TANOL/water-glycerol Solutions

2000 ◽  
Vol 55 (8) ◽  
pp. 682-686 ◽  
Author(s):  
İsmail Sert ◽  
M. Maral Sünnetçioǧlu ◽  
Rıza Sungur ◽  
Gökçe Bingöl
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Relaxation Times ◽  
Electronic Relaxation ◽  
Coupling Constant ◽  
Constant Concentration ◽  
Low Field ◽  
Leakage Factor ◽  
Water Glycerol ◽  
Polarization Studies

Abstract Dynamic Nuclear Polarization (DNP) studies of TANOL/water-glycerol solutions were per-formed at 1.53 mT. The samples have either various water-glycerol ratios at constant concentration or various concentrations at a constant water-glycerol ratio. The low field EPR spectra were recorded, the DNP parameters(enhancement factors, coupling constant, leakage factor) were determined, electronic relaxation times were measured. Depending on the values obtained, the interactions between nuclei and electrons are discussed.

Enhancing signal-to-noise ratio and resolution in low-field NMR relaxation measurements using post-acquisition digital filters

2018 ◽  
Vol 57 (9) ◽  
pp. 616-625 ◽  
Author(s):  
Tatiana Monaretto ◽  
Andre Souza ◽  
Tiago Bueno Moraes ◽  
Victor Bertucci-Neto ◽  
Corinne Rondeau-Mouro ◽  
...  
Keyword(s):  
Digital Filters ◽  
Signal To Noise Ratio ◽  
Nmr Relaxation ◽  
Signal To Noise ◽  
Low Field ◽  
Relaxation Measurements ◽  
Low Field Nmr ◽  
Noise Ratio

Low Field (10 mT) Pulsed Dynamic Nuclear Polarization

1999 ◽  
Vol 138 (2) ◽  
pp. 313-319 ◽  
Author(s):  
Marcello Alecci ◽  
David J. Lurie
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Low Field

High-field liquid state NMR hyperpolarization: a combined DNP/NMRD approach

2014 ◽  
Vol 16 (35) ◽  
pp. 18781-18787 ◽  
Author(s):  
Petr Neugebauer ◽  
Jan G. Krummenacker ◽  
Vasyl P. Denysenkov ◽  
Christina Helmling ◽  
Claudio Luchinat ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Dynamic Nuclear Polarization ◽  
Liquid State ◽  
High Field ◽  
Nuclear Polarization ◽  
Nmr Relaxation ◽  
Relaxation Dispersion ◽  
Liquid Solutions ◽  
High Fields

Dynamic nuclear polarization and NMR relaxation dispersion measurements have been performed on liquid solutions of TEMPOL radicals in solvents with different viscosities at a high magnetic field of 9.2 T. The results indicate that fast dynamics significantly contribute to DNP enhancements at high fields.

scholarly journals The role of the glassy dynamics and thermal mixing in the dynamic nuclear polarization and relaxation mechanisms of pyruvic acid

2014 ◽  
Vol 16 (48) ◽  
pp. 27025-27036 ◽  
Author(s):  
M. Filibian ◽  
S. Colombo Serra ◽  
M. Moscardini ◽  
A. Rosso ◽  
F. Tedoldi ◽  
...  
Keyword(s):  
Relaxation Rate ◽  
Dynamic Nuclear Polarization ◽  
Pyruvic Acid ◽  
Nuclear Polarization ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Thermal Mixing ◽  
Spin Lattice

In pyruvic acid containing 15 mM trityl below 4 K 13C polarization and spin–lattice relaxation rates are proportional to the spin–lattice relaxation rate of electrons, suggesting an efficient thermal mixing scenario.

Sign in / Sign up

Export Citation Format

Share Document