Mesogenic complexes were synthesized by the reaction of beta -aminovinyl ketones with copper(II) acetate. On going from the ligands to complexes, the temperature of phase transitions increases and the nematic phase disappears. The initial members of the homological 1-(4-nonyloxyphenyl)-3-(4-methoxyphenylamino)-1-propen-1-one series demonstrate the alternation of clearing temperatures, which is absent for the corresponding copper(II) complexes.
Liquid crystalline N-aryl-β-aminovinyl ketones and their complexes with lanthanides
摘要:
Liquid crystalline lanthanide complexes with N-aryl-substituted beta-aminovinyl ketones were synthesized for the first time. The complexes give rise to smectic A mesophase and are stable only in the solid state; in going to solution, they dissociate with formation of the initial ligand.