de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Pyramidic mesophases

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;

Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Zitation

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.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0019-AF45-D
Zusammenfassung
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.