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  Substituted tetrabenzocyclophanes as mesogenic units of new polycondensates exhibiting columnar mesophases

Kranig, W., Spiess, H. W., & Zimmermann, H. (1990). Substituted tetrabenzocyclophanes as mesogenic units of new polycondensates exhibiting columnar mesophases. Liquid Crystals, 7(1), 123-129. doi:10.1080/02678299008029199.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-AD60-0 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0000-83B8-C
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LiqCryst_7_1990_123.pdf (beliebiger Volltext), 398KB
 
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 Urheber:
Kranig, W., Autor
Spiess, Hans W.1, Autor           
Zimmermann, Herbert1, 2, 3, 4, Autor           
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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 Zusammenfassung: Recently a new family of flexible mesogens has been described namely hexa-alkylated derivatives of cyclotetraveratrylene. We have functionalized these compounds, obtaining monofunctionalized and bifunctionalized derivatives with heptyloxy side groups. A model dimer and polycondensates were synthesized. Calorimetric data as well as optical data prove that they exhibit columnar meso-phases. At this point it is not clear whether the conformation of the mesogenic units in the mesophase is tetragonal pyramidic with all of the mesogens being extended in one direction or discotic because of the high internal flexibility of the mesogenic core. The synthesis of the model dimer and the polycondensates as well as the calorimetric and optical data are the subject of this article.

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Sprache(n): eng - English
 Datum: 1989-06-161989-08-052006-09-241990
 Publikationsstatus: Erschienen
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1080/02678299008029199
 Art des Abschluß: -

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Titel: Liquid Crystals
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Taylor & Francis
Seiten: - Band / Heft: 7 (1) Artikelnummer: - Start- / Endseite: 123 - 129 Identifikator: ISSN: 0267-8292
CoNE: https://pure.mpg.de/cone/journals/resource/954925268301