6533b854fe1ef96bd12aea84
RESEARCH PRODUCT
Tetrakis(oxadiazolylphenyl)pyrazines: New St. Andrew's Cross-Shaped Liquid Crystals.
Tomasz MarszalekTomasz MarszalekHeiner DetertDaniel LimbachNico RöderWojciech PisulaWojciech Pisulasubject
Materials sciencePyrazineDiscotic liquid crystalSupramolecular chemistry02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesAtomic and Molecular Physics and Optics0104 chemical scienceschemistry.chemical_compoundCrystallographychemistryLiquid crystalPhase (matter)Alkoxy groupSide chainMoleculePhysical and Theoretical Chemistry0210 nano-technologydescription
π-Conjugated molecules with the shape of St. Andrew's cross have been synthesized via fourfold Huisgen reaction. Four 2,5-diaryl-1,3,4-oxadiazol arms are attached to a central pyrazine nucleus. These fluorescent stars, when decorated with a rim of eight alkoxy side chains are discotic liquid crystals. Depending on the substitution pattern, the width of the liquid phase varies within a broad range of 25 °C to 250 °C. In their liquid crystalline phase, the molecules assemble in a typical hexagonal columnar supramolecular arrangement.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-04 | Chemphyschem : a European journal of chemical physics and physical chemistry |