Non-Symmetric Liquid Crystal Dimers Containing Azobenzene and 1,3,4- Oxadiazole Group: Synthesis and Mesomorphic Behaviour
We report on the synthesis and mesomorphic behaviour of a new series of non-symmetric liquid crystal dimers with long terminal chains containing 1,3,4-oxadiazole group and azobenzene group as the mesogenic units. These nonsymmetric liquid crystal dimers are evidenced to display monolayer
smectic A phase. Microphase segregation and specific intermolecular interactions between the two different mesogenic units are the major driving forces for the formation of the monolayer smectic A structure.
Keywords: 1,3,4-oxadiazole; Azobenzene; alkyl; azobenzene; hydrogen; intercalated structure; interdigitated structure; liquid crystal dimers; non-symmetric dimers; symmetric dimers
Document Type: Research Article
Publication date: 01 January 2012
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