134855-49-5Relevant academic research and scientific papers
The Liquid-Crystalline Properties of Copper(II) Complexes of β-Diketones
Thompson, Neil J.,Gray, George W.,Goodby, John W.,Toyne, Kenneth J.
, p. 109 - 132 (2007/10/02)
The preparation of several novel copper(II) complexes of β-diketones is described.Complexes of increasing molecular width have been prepared and the effect of molecular shape on the mesophase types and transition temperatures is discussed.All the liquid-crystalline complexes exhibit nematic mesophases (monotropic for three-ring ligands and enantiotropic for four-ring ligands) with one exception which shows a smectic A phase.The liquid crystalline properties of the ligands are also discussed with respect to the way in which their molecular geometry affects the type of mesophase formed.Keywords: Copper(II) complexes, β-diketones, metallo-mesogens
Paramagnetic Nematic Liquid Crystals
Chandrasekhar, S.,Sadashiva, B. K.,Srikanta, B. S.
, p. 93 - 108 (2007/10/02)
Five nematogenic complexes, bis-copper(II), have been prepared.The mesophase, which occurs monotropically in all of them, is of the usual nematic type, but has paramagnetic properties.Magnetic, dielectric and electron paramagnetic resonance measurements are presented.A preliminary analysis of the data indicates the existence of antiparallel correlations in the nematic phase.
