Nuclear magnetic resonance and dielectric spectroscopy of a simple supercooled liquid

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Date

2003-04-22

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American Institute of Physics

Abstract

The small-molecule glass former methyl tetrahydrofuran (MTHF) was investigated using dielectric spectroscopy, spin-lattice relaxometry, multidimensional stimulated-echo nuclear magnetic resonance techniques, and field gradient diffusometry. We show experimentally that MTHF nicely fits into the pattern of related small-molecule glass-forming liquids, including the existence of a high-frequency contribution to the dielectric loss, the appearance of a pronounced translational enhancement, the dominance of small average rotational jump angles, and the existence of short-lived dynamical heterogeneity.

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Qi, F.; El Goresy, T.; Böhmer, R.; Döß, A.; Diezemann, G.; Hinze, G.; Sillescu, H.; Blochowicz, T.; Gainaru, C.; Rössler, E.; Zimmermann, H.: Nuclear magnetic resonance and dielectric spectroscopy of a simple supercooled liquid : 2-methyl tetrahydrofuran. In: Journal of Chemícal Physics Nr.16, Jg. 118(2003), S. 7431-7438, doi: 10.1063/1.1563599.