Preparation of azo compounds as liquid crystals | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 14, Issue 4, December 2014, Pages 61-71 PDF (0 K) | ||
| Author | ||
| Sajida.H. Ridha | ||
| Abstract | ||
| A new homologous series of symmetric dimers :α,β- Bis(4-n-alkoxy-2,3,5,6- methyl-4̀-oxy-Azo-benzene)ethane (n=1-7).have been synthesized and characterized by , IR, 1H-NMR and CHN analysis. Their liquid crystalline properties have been determined by polarizing optical microscopy (pom).All the members except the member (n=1) show mesomorphic properties. The members (n=2,3) show enantiotropic pure nematic phase while the members (n=4-7) show entiotropic smectic C phase in addition to enantiotropic nematic phase . | ||
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