Synthesis and properties of oligomeric liquid crystals
Development of polymeric liquid crystals as high performance materials has been briefly reviewed. These materials exhibit structural similarities to oligomeric liquid crystalline esters containing solely rigid units in the backbone. Reported synthesis methods for oligomeric liquid crystalline aryl esters starting from phenols and aromatic acids have been reviewed and own results in this field presented. The phase behavior and formation of liquid crystalline mesophases in these oligoesters is discussed as affected by the structural parameters of oligomeric liquid crystals, like length of the aryl ester backbone, the number and size of substituents on the aromatic cores and isomerism of ester bonds. Further work on the applications of oligomeric liquid crystals as monomers or modifiers for new polymeric high performance materials has been exemplified.
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