| Autor: |
Liang-Chy Chien, Jack R. Kelly, M. Sonpatki, Tatiana Sergan |
| Rok vydání: |
2001 |
| Předmět: |
|
| Zdroj: |
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 359:259-267 |
| ISSN: |
1058-725X |
| DOI: |
10.1080/10587250108035585 |
| Popis: |
We studied a liquid crystalline compound of disk-like molecules that has a mesophase in the temperature range 104–180°C. The compound exhibits schlieren textures typical to the discoidal nematic phase within this temperature range. Chemical modification of this compound with chiral groups allowed to synthesize a chiral discotic. Incorporating the chiral discotic as a dopant in the discotic compound we produced chiral structures. In the mixtures of chiral and non-chiral discotic, we observed textures typical to rod-like cholesterics: oily streaks, fingerprint textures, and Cano-Grandjean lines in wedge cells. The induced cholesteric pitch was estimated from fingerprint textures. We induced chiral structures with pitch between 10μm and 40μm for the concentration range 1–7 weight % of chiral discotic. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
