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RESEARCH PRODUCT
3,5-Dialkoxy Substituted Triphenyl-tristriazolotriazines: Fluorescent Discotic Liquid Crystals
Dorothee BorchmannStefan GlangThorsten RiethHeiner Detertsubject
Phase transitionMaterials scienceDiscotic liquid crystalCyanuric chlorideMesophaseGeneral ChemistryCondensed Matter PhysicsThermotropic crystalchemistry.chemical_compoundCrystallographyDifferential scanning calorimetrychemistrySide chainGeneral Materials ScienceColumnar phasedescription
Tristriazolotriazines with a threefold 3,5-dialkoxyphenyl substitution were prepared from the corresponding phenyltetrazoles and cyanuric chloride. These star-shaped compounds are discotic liquid crystals that form broad and stable thermotropic mesophases. The thermal behaviour was studied by DSC and polarizing optical microscopy. An increasing length of the side chains reduces the phase transition temperatures, this effect is more pronounced for the crystalline to mesophase transition than for the clearing temperature. XRD on an oriented sample revealed a hexagonal columnar structure for the mesophase. All TTTs emit a strong fluorescence in the UV-violet region.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-03-24 | Molecular Crystals and Liquid Crystals |