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  The polymorphic phases of the hexaalkanoyloxytriphenylene liquid crystals, as studied by deuterium NMR spectroscopy

Goldfarb, D., Lifshitz, E., Zimmermann, H., & Luz, Z. (1984). The polymorphic phases of the hexaalkanoyloxytriphenylene liquid crystals, as studied by deuterium NMR spectroscopy. The Journal of Chemical Physics, 82(11), 5155-5163. doi:10.1063/1.448640.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0000-D379-A Version Permalink: https://hdl.handle.net/21.11116/0000-0000-D37A-9
Genre: Journal Article

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JChemPhys_82_1985_5155.pdf (Any fulltext), 640KB
 
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 Creators:
Goldfarb, Daniella, Author
Lifshitz, E., Author
Zimmermann, Herbert1, 2, 3, 4, Author           
Luz, Zeev, Author
Affiliations:
1Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705              
2Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              
3Zimmermann Group, Max Planck Institute for Medical Research, Max Planck Society, ou_1497749              
4Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497712              

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 Abstract: Deuterium NMR spectra are reported for several specifically deuterated hexaalkanoyloxytriphenylenes in their corresponding liquid crystalline phases. The higher homologs of this series are polymorphic and exhibit a variety of discotic mesophases, including both biaxial (D0 and D1) and uniaxial (D2) columnar phases. The ordering characteristics of these phases are studied using the quadrupolar splittings of the aromatic and aliphatic deuterons. The results show that during the transition from the biaxial D1 to the axial D2 phase the major susceptibility tensor switch orientation, apparently due to strong tilting of the molecules with respect to the columnar axis in the biaxial phase. Characteristic features which appear in the spectra of these phases are interpreted in terms of intercolumnar jumps of mesogen molecules.

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Language(s): eng - English
 Dates: 1984-07-271984-11-191998-081984-11
 Publication Status: Issued
 Pages: 9
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 Rev. Type: Peer
 Identifiers: DOI: 10.1063/1.448640
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Title: The Journal of Chemical Physics
  Other : J. Chem. Phys.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Institute of Physics
Pages: - Volume / Issue: 82 (11) Sequence Number: - Start / End Page: 5155 - 5163 Identifier: ISSN: 0021-9606
CoNE: https://pure.mpg.de/cone/journals/resource/954922836226