Investigations of hydrogen bonded liquid crystals formed by dicarboxylic acids and alkyloxy alkyl benzoic acids

Abstract

Fluid materials are contemplated over decade due to their anisotropic property showed within molecules The prominent highlights of Liquid Crystals fluid are the association of constituents molecules in lengthy range orientation or lengthy range positional order Through converting the orientation of molecules the optical and mechanical property also differs in the system This sort of mesophases possesses both the properties of solid crystalline and liquid isotropy that exhibit particular electro optical phenomena The anisotropic properties affect the molecules through a susceptible electrical and magnetic fields These susceptible electrostatic forces between donor and acceptor atom impacts the hydrogen bond to engage with molecules Hydrogen Bonded Liquid Crystal HBLC fashioned via complementary hydrogen bonds can be synthesized using type of practical groups and through the interaction of vulnerable non covalent bond present between two dissimilar moieties In view of this liquid crystalline behaviour effective work has been carried out in designing synthesizing and characterizing of three intermolecular hydrogen bonded collection formed by dicarboxylic acids and alkyloxy alkyl benzoic acids comprising of 40 complexes The temperature of the mesogen filled into a commercially available polyamide buffed cell is controlled by HCS 402 with the aid of STC 200 interfaced to a computer system Nikon Polarizing Optical Microscope is used to analyze the optical textures The spectral evolution of the liquid crystal mesogen is carried out with aid of BRUKER NMR and ABB Bomem FTIR Shimadzu Differential Scanning Calorimetry is used to find the Tc and the corresponding H values of the each mesogens The dielectric relaxations are analyzed by Agilent 4192A low frequency impedance analyzer newline