Nuclear magnetic resonance and dielectric spectroscopy of a simple supercooled liquid: 2-methyl tetrahydrofuran

2003 ◽  
Vol 118 (16) ◽  
pp. 7431 ◽  
Author(s):  
F. Qi ◽  
T. El Goresy ◽  
R. Böhmer ◽  
A. Döß ◽  
G. Diezemann ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Dielectric Spectroscopy ◽  
Supercooled Liquid ◽  
Nuclear Magnetic

Slow Motion of Confined Molecules: NMR and Broadband Dielectric Spectroscopy Investigations

2008 ◽  
Vol 8 (2) ◽  
pp. 887-893 ◽  
Author(s):  
Özlen F. Erdem ◽  
André Pampel ◽  
Dieter Michel
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Ethylene Glycol ◽  
Spin Relaxation ◽  
Dielectric Spectroscopy ◽  
Proton Spin ◽  
Magic Angle ◽  
Glass Forming ◽  
Broadband Dielectric Spectroscopy ◽  
Nuclear Magnetic

Nuclear magnetic resonance (NMR) and broadband dielectric spectroscopy are used to investigate the dynamics of small glass-forming molecules confined to restricted geometries. Ethylene glycol molecules are embedded in the supercages of NaX zeolites. The combined application of NMR and broadband dielectric spectroscopy advances the understanding of the slowing down of the motion near the glass transition temperature of these confined molecules. In combination with nuclear spin relaxation and nuclear magnetic resonance spectroscopy, dielectric relaxation studies on glass forming molecules allow conclusions on the character of the motion. High resolution 1H magic angle spinning (MAS) NMR measurements not only enable a characterisation of the state of the adsorbed molecules via a chemical shift analysis. By means of an analysis of MAS spinning sidebands we may also estimate a correlation time the meaning of which will be discussed in comparison to the results of longitudinal proton spin relaxation measurements. In addition to broadband dielectric spectroscopy slow molecular motions of partially deuterated ethylene glycol adsorbed in NaX are studied by means of 2H NMR line-shape analysis.

Dynamic behaviour of a ferro-electric liquid crystal by means of nuclear magnetic resonance and dielectric spectroscopy

2007 ◽  
Author(s):  
Valentina Domenici ◽  
Alberto Marini ◽  
Rita Menicagli ◽  
Carlo Alberto Veracini ◽  
Aleksej M. Bubnov ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Liquid Crystal ◽  
Magnetic Resonance ◽  
Dielectric Spectroscopy ◽  
Dynamic Behaviour ◽  
Nuclear Magnetic

Dynamics of Ferroelectric Bis(imidazolium) Pentachloroantimonate(III) by Means of Nuclear Magnetic Resonance 1H Relaxometry and Dielectric Spectroscopy

2014 ◽  
Vol 118 (20) ◽  
pp. 3564-3571 ◽  
Author(s):  
A. Piecha-Bisiorek ◽  
R. Jakubas ◽  
W. Medycki ◽  
M. Florek-Wojciechowska ◽  
M. Wojciechowski ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Dielectric Spectroscopy ◽  
Nuclear Magnetic

scholarly journals Reservoir properties of drill cutting by the nuclear magnetic resonance relaxometry and dielectric spectroscopy data

2020 ◽  
Vol 43 (3) ◽  
pp. 364-374
Author(s):  
A. A. Mezin ◽  
M. Y. Shumskayte ◽  
V. N. Glinskikh ◽  
N. A. Golikov ◽  
E. S. Chernova
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Particle Size ◽  
Magnetic Resonance ◽  
Dielectric Spectroscopy ◽  
Pore Space ◽  
Reservoir Properties ◽  
Drill Cuttings ◽  
The Core ◽  
Nuclear Magnetic Resonance Relaxometry ◽  
Nuclear Magnetic

The purpose of the study is to extend the use of nuclear magnetic resonance relaxometry and dielectric spectrometry methods. This is realized through a complex interpretation of the data by the above methods to timely provide additional petrophysical information about the drill cuttings pore space properties and structure. The relevance of the study is that the data on the drill cuttings obtained by the NMR method can be used as prior information in the logging data interpretation before a detailed petrophysical study of the core sample or in case of the core absence in the sampling interval. The objects of study are the drill cuttings samples from the fields of the West Siberian oil-and-gas province. The samples are saturated with different fluids, and their reservoir properties are determined by the nuclear magnetic resonance and dielectric spectrometry methods. As part of the experimental research, nuclear magnetic resonance investigations of the core samples of different discretization degrees have been carried out to determine the reservoir properties of the samples depending on the degree of their particle size reduction. It has been shown that the obtained results do not depend on the particle size of the measured sample and are consistent with the results of the standard petrophysical studies. The relationship between the porosity and the saturating fluid type has been established. Based on the data obtained by the dielectric spectroscopy method, the study has determined the value of the complex dielectric constant that shows how the degree of saturation changes depending on the fluid, and what happens in the pore space. The complex interpretation of the results obtained by the two methods provides additional information on the drill cuttings reservoir properties that can be used as a priori information on the formation properties.

Reorientational dynamics of trimethoxyboroxine: A molecular glass former studied by dielectric spectroscopy and 11B nuclear magnetic resonance

2020 ◽  
Vol 152 (3) ◽  
pp. 034503 ◽  
Author(s):  
Lars Hoffmann ◽  
Joachim Beerwerth ◽  
Dominik Greim ◽  
Jürgen Senker ◽  
Christian Sternemann ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Dielectric Spectroscopy ◽  
Molecular Glass ◽  
Reorientational Dynamics ◽  
Nuclear Magnetic

scholarly journals Slow dynamics of solid proteins – Nuclear magnetic resonance relaxometry versus dielectric spectroscopy

2020 ◽  
Vol 314 ◽  
pp. 106721 ◽  
Author(s):  
Danuta Kruk ◽  
Elzbieta Masiewicz ◽  
Milosz Wojciechowski ◽  
Malgorzata Florek-Wojciechowska ◽  
Lionel M. Broche ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Dielectric Spectroscopy ◽  
Slow Dynamics ◽  
Nuclear Magnetic Resonance Relaxometry ◽  
Nuclear Magnetic
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