A novel family of salicylaldimine-based five-ring symmetric and non-symmetric banana-shaped mesogens derived from laterally substituted resorcinol: synthesis and characterization
Nematic phases in achiral unsymmetrical four-ring bent-core azo compounds possessing strongly polar cyano and nitro moieties as end substituents: Synthesis and characterization
transverse direction of the molecule. The molecular structure characterization is consistent with elemental and spectroscopic analysis data. The materials thermal behaviour and phasecharacterization have been investigated by differential scanning calorimetry and polarizing optical microscopy. All the compounds exhibit enantiotropic nematic phase over a widetemperaturerange. The light induced cis–trans
A New Homologous Series of Phenol Derivatives Exhibiting Liquid Crystalline Phase
作者:Sakumitsu Sakagami、Akira Takase
DOI:10.1246/cl.1995.521
日期:1995.7
A new homologousseries of 4-(4-n-alkoxy-2-hydroxybenzylideneamino)phenol was synthesized, and the phase transitions were determined using a differential scanning calorimeter and an ordinary polari...
Shimizu, Yo; Kusabayashi, Shigekazu, Molecular Crystals and Liquid Crystals (1969-1991), 1986, vol. 132, p. 221 - 234
作者:Shimizu, Yo、Kusabayashi, Shigekazu
DOI:——
日期:——
Prasad, Veena; Sadashiva, B. K., Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals, 1993, vol. 225, p. 303 - 312
作者:Prasad, Veena、Sadashiva, B. K.
DOI:——
日期:——
Rare-Earth-Containing Magnetic Liquid Crystals
作者:Koen Binnemans、Yury G. Galyametdinov、Rik Van Deun、Duncan W. Bruce、Simon R. Collinson、Arkadiy P. Polishchuk、Ildar Bikchantaev、Wolfgang Haase、Andrey V. Prosvirin、Larisa Tinchurina、Igor Litvinov、Ajdar Gubajdullin、Ajdar Rakhmatullin、Koen Uytterhoeven、Luc Van Meervelt
DOI:10.1021/ja993351q
日期:2000.5.1
Rare-earth-containing metallomesogens with 4-alkoxy-N-alkyl-2-hydroxybenzaldimine ligands are reported. The stoichiometry of the complexes is [Ln(LH)(3)(NO3)(3)], where Ln is the trivalent rare-earth ion;(Y, La, and Pr to Lu, except Pm) and LH is the Schiff base. The Schiff base ligands are in the zwitterionic form and coordinate through the phenolic oxygen only. The three nitrate groups coordinate in a bidentate fashion. The X-ray single-crystal structures of the nonmesogenic homologous complexes [Ln(LH)(3)(NO3)(3)]where Ln = Nd(III), Tb(III), and Dy(III) and LH = CH3OC6H3(2-OH)CH=NC4H9, are described. Although the Schiff base Ligands do not exhibit a mesophase, the metal complexes do (SmA phase). The mesogenic rare-earth complexes were studied by NMR, IR, EPR, magnetic susceptibility measurements, X-ray diffraction,and molecular modeling. The metal complexes in the mesophase have a very large magnetic anisotropy, so that these magnetic liquid crystals can easily be aligned by an external magnetic field.