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Updated: Jun 5, 2026

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
Published on: October 9, 2020
Nuclear-magnetic-resonance measurements reveal the origin of the Debye process in monohydroxy alcohols
C Gainaru1, R Meier, S Schildmann
1Fakultät für Physik, Technische Universität Dortmund, 44221 Dortmund, Germany. catalin.gainaru@tu-dortmund.de
Abstract:
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 translational 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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