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

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

scholarly journals Nuclear Magnetic Resonance Study of Anion and Cation Reorientational Dynamics in (NH4)2B12H12

2018 ◽  
Vol 122 (6) ◽  
pp. 3256-3262 ◽  
Author(s):  
Alexander V. Skripov ◽  
Roman V. Skoryunov ◽  
Alexei V. Soloninin ◽  
Olga A. Babanova ◽  
Vitalie Stavila ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Reorientational Dynamics ◽  
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

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
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