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Journal Article

Deuteron nuclear magnetic resonance and dielectric studies of molecular reorientation and charge transport in succinonitrile-glutaronitrile plastic crystals

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Zimmermann,  Herbert
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

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https://www.sciencedirect.com/science/article/pii/S2590159122000176
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https://www.sciencedirect.com/science/article/pii/S2590159122000176/pdfft?md5=5670f4e2a35abc57be433f8c31ade106&pid=1-s2.0-S2590159122000176-main.pdf
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https://ars.els-cdn.com/content/image/1-s2.0-S2590159122000176-mmc1.pdf
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Citation

Lansab, S., Münzner, P., Zimmermann, H., & Böhmer, R. (2022). Deuteron nuclear magnetic resonance and dielectric studies of molecular reorientation and charge transport in succinonitrile-glutaronitrile plastic crystals. Journal of Non-Crystalline Solids: X, 14: 100097, pp. 1-13. doi:10.1016/j.nocx.2022.100097.


Cite as: https://hdl.handle.net/21.11116/0000-000A-56BB-3
Abstract
Plastic crystals are currently discussed as matrices for highly conducting materials. Among them, mixtures based on succinonitrile (SN) have received particular attention. Long ago, Austen Angell [J. Non-Cryst. Solids 131–133 (1991) 13] has shown that in mixtures with glutaronitrile (GN), the plastic phase of SN can deeply be supercooled. Here, a mixture of 60% SN – featuring deuterated methylene groups – and 40% GN is studied using 2H nuclear magnetic resonance (NMR), thus allowing selective access to the reorientational dynamics of SN. These dynamics agree with that inferred for partially deuterated SN-GN from dielectric spectroscopy which also reveal that a significant H/D isotope effect is absent. Additionally, in the liquid and slightly below the transition to the plastically crystalline state, mixtures of 60% SN and 40% GN are studied using field-gradient NMR diffusometry as well as rotational viscometry.