Mesomorphic properties of a new homologous series of ortho hydroxyl-functionalized Schiff bases

الملخص EN

Nine members of a homologous series of the Schiff bases [4 (4'-n-alkoxy-2-hydroxybenzylidene) amino biphenyl] have been prepared and their mesomorphic properties and phase transitions were determined for all compounds by polarizing hot stage microscopy and differential calorimatry for some of them.

The properties of this series are compared with those the analogous Schiff bases, the [4 (4'-n-alkoxy-2-hydroxybenzylidene) amino biphenyl].

The effect of the hydroxyl group in ortho position on the type of liquid crystal phases in this series and thermal stability has been assessed.