Translator Disclaimer
1 September 2004 Linear and crosslinked silicon based liquid crystalline materials
Author Affiliations +
Proceedings Volume 5565, XV Conference on Liquid Crystals; (2004)
Event: XV Conference on Liquid Crystals, 2003, Zakopane, Poland
In this paper the effect of steric hindrance, crosslinking and the use of multipode mesogenic moieties is presented as a part of studies directed on the architectural modification of silicon containing SLCP's. Trist(trimethylsilyl)methyl(trisyl) groups have been attached to liquid crystalline comb-like polysiloxanes by hydrosilylation reaction in order to increase their thermal stability. It was found that attaching trisyl group to 10% of monomeric units led to a decrease in mass loss at 330°C by a factor of 2. The thermo-optical studies of linear and crosslinked LC polycarbosilanes exhibiting SmC* phase proved that crosslinking stabilizes the generated mesophases, especially during isotropisation process. The new synthetic route for polysiloxanes with pendant "triple-fork" mesogenes has been developed. It was found that such the structures are able to generate stable mesophases even if their molecular mass is relatively low.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tomasz Ganicz "Linear and crosslinked silicon based liquid crystalline materials", Proc. SPIE 5565, XV Conference on Liquid Crystals, (1 September 2004);


Back to Top