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  Pyramidic mesophases

Zimmermann, H., Poupko, R., Luz, Z., & Billard, J. (1985). Pyramidic mesophases. Zeitschrift für Naturforschung, A: Physical Sciences, 40(2), 149-160. doi:10.1515/zna-1985-0208.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-AF45-D Version Permalink: https://hdl.handle.net/21.11116/0000-0000-D332-9
Genre: Journal Article

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 Creators:
Zimmermann, Herbert1, 2, 3, 4, Author           
Poupko, Raphy, Author
Luz, Zeev, Author
Billard, Jean, 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: Two series of mesogenic compounds consisting of a rigid pyramidal central core and six equal flexible side chains were synthesized and their mesomorphic properties studied by calorimetry and optical microscopy. The two series of compounds are: I-hexaalkyloxytribenzocyclononene and II-hexaalkanoyloxytribenzocyclononene. In series I, enantiotropic mesophases appear for homologues in which the number, n, of carbon atoms in each side chain is equal or larger than six, while for series II mesomorphism is exhibited for all the compounds studied (8- 15). Some of these exhibit dimorphism (i.e. I-11 and II-12 to II-14) and even trimorphism (II-11). In total Five different mesophases are identified in both series. Several of these are stable at room temperature. Optical measurements indicate that they are not layered, they appear to be columnar. Due to the pyramidal shape of the central core of the constituent molecules special molecular arrangements for these mesophases are possible. It is suggested to call them pyramidic mesophases.

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Language(s): eng - English
 Dates: 1984-12-132014-06-021985-02-01
 Publication Status: Issued
 Pages: 12
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1515/zna-1985-0208
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Title: Zeitschrift für Naturforschung, A: Physical Sciences
  Other : Z. Naturforsch., A: Phys. Sci.
Source Genre: Journal
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Publ. Info: Tübingen : Verlag der Zeitschrift für Naturforschung
Pages: - Volume / Issue: 40 (2) Sequence Number: - Start / End Page: 149 - 160 Identifier: ISSN: 1865-7109
CoNE: https://pure.mpg.de/cone/journals/resource/954928567579