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Discotic liquid crystals and their characterization by deuterium NMR

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons128263

Zimmermann,  Herbert
Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society;
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;
Zimmermann Group, Max Planck Institute for Medical Research, Max Planck Society;
Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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Zitation

Luz, Z., Goldfarb, D., & Zimmermann, H. (1985). Discotic liquid crystals and their characterization by deuterium NMR. In J. W. Emsley (Ed.), Nuclear Magnetic Resonance of Liquid Crystals (pp. 343-377). Dordrecht, NL: D. Reidel Publishing Comp./Springer.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0019-AF2B-9
Zusammenfassung
In the present chapter we summarize experimental NMR studies performed on various discotic compounds. The approach used, as in many other studies of liquid crystalline systems, has been deuterium NMR of specifically deuteriated mesogens, as well as of deuteriated probe molecules dissolved in the various mesophases. We first review some chemical aspects related to discotic compounds, followed by the classification of the discotic mesophases as known to date. The basic equations used in the interpretation of the spectra will then be given with particular emphasis on the effect of the mesophase symmetry. Finally the experimental results are discussed under the following subheadings: (a) uniaxial phases, (b) biaxial phases, (c) NMR of probe molecules, and (d) diffusion measurements. The presentation follows very closely and sometimes overlaps the discussion in the review article recently published in the Israel Journal of Chemistry (1).