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RESEARCH PRODUCT
Synthesis and phase behaviour of liquid-crystalline side group polyesters
Helmut RingsdorfBernd Recksubject
chemistry.chemical_classificationMaterials scienceBilayerMesogenGeneral ChemistryPolymerCondensed Matter PhysicsPolyesterCrystallographyDifferential scanning calorimetrychemistryLiquid crystalPhase (matter)Organic chemistryGeneral Materials SciencePendant groupdescription
Abstract Several series of liquid-crystalline side group polymers with a polyester backbone structure have been synthesized using mesogenic diethylmalonate and 1,3-propanediol derivatives. The structures of the polymer backbone and the mesogenic units have been varied systematically. As shown by differential scanning calorimetry, polarizing microscopy and X-ray diffraction, the side group polyesters exhibit nematic and/or smectic mesophases. Polyesters synthesized from mesogenic diethylmalonate derivatives can tolerate long non-mesogenic segments in the polymer main chain without losing their liquid crystal properties. X-ray studies suggest that some of the smectic polymers exhibit interdigitated bilayer SA phases.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-08-01 | Liquid Crystals |