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RESEARCH PRODUCT
4,4′‐Distyrylazobenzol als Mesogen
Herbert MeierGeorg ZerbanFrank Kosteynsubject
Inorganic ChemistryCrystallographychemistry.chemical_compoundDifferential scanning calorimetryAzo compoundReaction sequenceChemistryLiquid crystalMesogenOrganic chemistryThermotropic crystalPolarizing microscopydescription
4,4′-Distyrylazobenzene as Mesogen From 3,4-dihydroxybenzaldehyde (1) the tetraalkoxy-substituted 4,4′-distyrylazobenzenes (E,E,E)-5a – c are synthesized. A similar reaction sequence leads from ethyl 3,4,5-trihydroxy-benzoate (6) to the hexaalkoxy-substituted 4,4′-distyrylazobenzenes (E,E,E)-11 b, c. With the exception of 5a all products show thermotropic LC properties. Smectic phases have been characterized by polarizing microscopy and by differential scanning calorimetry.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-04-01 | Chemische Berichte |