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An efficient synthesis of liquid crystalline gigantocycles combining banana-shaped and rod-like mesogenic units

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons47942

Godt,  Adelheid
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47818

Duda,  S.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48893

Ünsal,  Ö.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48861

Thiel,  J.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47984

Härter,  A.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48663

Roos,  M.
MPI for Polymer Research, Max Planck Society;

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Zitation

Godt, A., Duda, S., Ünsal, Ö., Thiel, J., Härter, A., Roos, M., et al. (2002). An efficient synthesis of liquid crystalline gigantocycles combining banana-shaped and rod-like mesogenic units. Chemistry-A European Journal, 8(22), 5094-5106.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-649E-8
Zusammenfassung
The synthesis of monodisperse gigantocycles with 63, 87, and 147 ring atoms on the gram scale is described. These molecules were assembled from terphenylene derivatives and long, flexible chains which were mainly aliphatic, with I terminal alkyne groups. The latter allowed for ring formation through oxidative alkyne dimerization in high yield (80-87%). The combination of a rod-like and a banana-shaped mesogen connected by flexible chains within the backbone of a ring gives rise to nematic and smectic mesophases.