Hydrogen bonding intermolecular effect on electro-optical response of doped 6PCH nematic liquid crystal with some azo dyes

Role of specific and nonspecific intermolecular interaction in electro-optical response of doped 6CHBT nematic liquid crystal with azo dyes

“…In higher concentrations of B-dye, the dye-dye interactions increase strongly and consequently, repulsion of molecular dipoles reduce average ordering of doped system and directional polarizability. In our previous work, similar results were found in 6PCH NLC doped with these dyes [24]. But the values of third-order nonlinear susceptibility of 6PCH doped by low amount of A-dye leads to enhancement about thrice, as compared to pure 6PCH LC.…”

“…To measure electro-optical Kerr constant, using nulled intensity method, an external electric field was applied across the Kerr cell [24]. In the presence of electric field, the media becomes birefringence.…”

Molecular Mobility Effect on Magnetic Interactions in All-Organic Paramagnetic Liquid Crystal with Nitroxide Radical as a Hydrogen-Bonding Acceptor

“…Since the first H-bonded liquid crystalline (LC) material, 4-butoxybenzoic acid, was reported, a lot of H-bonded LC compounds have been documented; , in particular, supramolecular LC compounds forming an H-bond between a pyridine ring and a carboxyl group , attracted a great attention of materials scientists, chemists, physicists, and so on, because the control of H-bonded nanostructures is highly effective to create new functions. For example, highly preprogrammed H-bonded LC compounds show 1-D, 2-D, or 3-D ion conduction selectively, H-bonded columnar LC compounds exhibit unique dielectric properties, , H-bonding broadens the temperature range of LC phases, and H-bonding improves electro-optic responsivity. , …”

“…For example, highly preprogrammed H-bonded LC compounds show 1-D, 11 2-D, 12 or 3-D 13 ion conduction selectively, H-bonded columnar LC compounds exhibit unique dielectric properties, 14,15 Hbonding broadens the temperature range of LC phases, 16 and H-bonding improves electro-optic responsivity. 17,18 In this context, it is quite natural that the self-assembled nanostructures affect magnetic properties in LC materials. As magnetic LC compounds, there are metallomesogens with paramagnetic metal ions 19,20 and organic radical LC compounds with stable radicals.…”