Photoexcited azo-dye induced torque in nematic liquid crystals

Synthesis, 2D NMR and X-ray diffraction studies on Cu(II) and Ni(II) complexes with ligands derived from azobenzene-cored Schiff base: Mesomorphic behaviors of Cu(II)–phenolates and crystal structure of bis[4-(4-alkoxy-2-hydroxybenzylideneamino)azobenzene]copper(II)

“…doi:10.1016/j.molstruc.2011.05.036 high-density optical data storage, optical switching, display and nonlinear optics [9,10]. However, it has been claimed that the molecules with AN@NA group in mesophase prefer the trans conformation as that/those reported for photoexcited azo-dye induced torque in N liquid crystals [11]. Another interesting feature of azobenzene compound lies on its potential to form rod-like molecules leading to the materials exhibiting liquid crystalline properties [11].…”

Magnetic field effects on the optical properties of an azo-dye doped liquid crystal

“…When the dye contains the azo-group, the photoinduced reversible conformational transformations are very promising for reversible optical memories or photochemical switching operations. There are also many studies which investigate the phenomena occurring in such systems [8][9][10][11][12][13]. Most of these studies are focused on molecular reorientation produced by electrical or optical fields.…”

Stability of Optical Reorientation of Nematic Liquid Crystals Doped with Azo-Dyes in Polymer Networks

“…In the LCs with azo-dyes, the dye molecules can be either coated on the substrate surfaces of the LC cell [4] or simply doped in the LC material [5,6]. In the case that the azo-dyes are coated on the substrate surfaces, the photo-isomerization process of the dye molecules on the surface predominantly governs the LC alignment which propagates into the bulk.…”