Nuclear magnetic resonance measurements reveal the origin of the Debye process in monohydroxy alcohols

Details Nuclear magnetic resonance measurements reveal the origin of the Debye process in monohydroxy alcohols Nuclear magnetic resonance measurements reveal the origin of the Debye process in monohydroxy alcohols

2010-08-19

arxiv.org/abs/1008.3370v2

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

Monohydroxy alcohols show a structural relaxation and at longer time scales a Debye-type dielectric peak. From spin-lattice relaxation experiments using different nuclear probes an intermediate, slower-than-structural dynamics is identified for n-butanol. Based on these findings and on diffusion measurements, a model of self-restructuring, transient chains is proposed. The model is demonstrated to explain consistently the so far puzzling observations made for this class of hydrogen-bonded glass forming liquids.

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