Sadeem Al-Barody | The University of Mustansiriyah (original) (raw)
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Papers by Sadeem Al-Barody
This research presented in this project is aimed to create new structures based on azobenzene mes... more This research presented in this project is aimed to create new structures based on azobenzene mesogenic unit, which can support a mesophase. In particular, two types of mesogenic and non mesogenic materials have been designed and developed, following the general criteria required by molecular structure to exhibit liquid crystalline behavior.Double arms azobenzene Schiff base ligands and four lanthanide complexes (Ln =La+3, Ce+3, Sm+3 and Gd+3)were synthesized and characterized. • Two forms of ligands exists in the complexes; one as tetradentate and bidentate for the other as it present in zwitter ionic form. • The ligand and lanthanides complexes exhibit smectic-A (SmA) broken focal-conic fan texture during heating and cooling process to crystalline solid (Cr)phase.
Cogent Chemistry, 2015
New mesogen Schiff base ligand N,N′-di-(4′-pentyloxybenzoate)salicylidene-1,3-diaminopropane [H2L... more New mesogen Schiff base ligand N,N′-di-(4′-pentyloxybenzoate)salicylidene-1,3-diaminopropane [H2L] was synthesized by the reaction of substituted 4-pentyloxy(4′-formyl-3′-hydroxy)-benzoate and 1,3-diaminopropane in 2:1 molar ratio. Four mononuclear lanthanide complexes of the type [Ln(H2L)LCl] (Ln = LaIII, CeIII, SmIII and GdIII) were synthesized and characterized by 1H,13CNMR, fourier transform infrared (FT-IR) spectroscopy, elemental analysis (C.H.N.O), gas chromotography-mass, magnetic susceptibility and molar conductivity. Thermal properties of the title compounds were studied using the thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) and optical polarizing microscopy (OPM). The ligand and coordination compounds exhibit liquid crystalline properties (smectic A).
Abstract: New mesogen Schiff base ligand N,N-di-(4-pentyloxybenzoate)salicylidene-1,3-diaminopr... more Abstract: New mesogen Schiff base ligand N,N-di-(4-pentyloxybenzoate)salicylidene-1,3-diaminopropane [H2L] was synthesized by the reaction of substituted 4-pentyloxy(4-formyl-3-hydroxy)-benzoate and 1,3-diaminopropane in 2:1 molar ratio. Four mononuclear lanthanide complexes of the type [Ln(H2L)LCl] (Ln = LaIII, CeIII, SmIII and GdIII) were synthesized and characterized by 1H,13CNMR, fourier transform infrared (FT-IR) spectroscopy, elemental analysis (C.H.N.O), gas chromotography-mass, magnetic susceptibility and molar conductivity. Thermal properties of the title compounds were studied using the thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) and optical polarizing microscopy (OPM).The ligand and coordination compounds exhibit liquid crystalline properties (smectic A).
lanthanides liquid crystaline of azobenzene schiff base, 2014
Journal of Applied Chemistry, 2014
Taylor & Francis ( Liquid Crystals), May 21, 2014
This research presented in this project is aimed to create new structures based on azobenzene mes... more This research presented in this project is aimed to create new structures based on azobenzene mesogenic unit, which can support a mesophase. In particular, two types of mesogenic and non mesogenic materials have been designed and developed, following the general criteria required by molecular structure to exhibit liquid crystalline behavior.Double arms azobenzene Schiff base ligands and four lanthanide complexes (Ln =La+3, Ce+3, Sm+3 and Gd+3)were synthesized and characterized. • Two forms of ligands exists in the complexes; one as tetradentate and bidentate for the other as it present in zwitter ionic form. • The ligand and lanthanides complexes exhibit smectic-A (SmA) broken focal-conic fan texture during heating and cooling process to crystalline solid (Cr)phase.
Cogent Chemistry, 2015
New mesogen Schiff base ligand N,N′-di-(4′-pentyloxybenzoate)salicylidene-1,3-diaminopropane [H2L... more New mesogen Schiff base ligand N,N′-di-(4′-pentyloxybenzoate)salicylidene-1,3-diaminopropane [H2L] was synthesized by the reaction of substituted 4-pentyloxy(4′-formyl-3′-hydroxy)-benzoate and 1,3-diaminopropane in 2:1 molar ratio. Four mononuclear lanthanide complexes of the type [Ln(H2L)LCl] (Ln = LaIII, CeIII, SmIII and GdIII) were synthesized and characterized by 1H,13CNMR, fourier transform infrared (FT-IR) spectroscopy, elemental analysis (C.H.N.O), gas chromotography-mass, magnetic susceptibility and molar conductivity. Thermal properties of the title compounds were studied using the thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) and optical polarizing microscopy (OPM). The ligand and coordination compounds exhibit liquid crystalline properties (smectic A).
Abstract: New mesogen Schiff base ligand N,N-di-(4-pentyloxybenzoate)salicylidene-1,3-diaminopr... more Abstract: New mesogen Schiff base ligand N,N-di-(4-pentyloxybenzoate)salicylidene-1,3-diaminopropane [H2L] was synthesized by the reaction of substituted 4-pentyloxy(4-formyl-3-hydroxy)-benzoate and 1,3-diaminopropane in 2:1 molar ratio. Four mononuclear lanthanide complexes of the type [Ln(H2L)LCl] (Ln = LaIII, CeIII, SmIII and GdIII) were synthesized and characterized by 1H,13CNMR, fourier transform infrared (FT-IR) spectroscopy, elemental analysis (C.H.N.O), gas chromotography-mass, magnetic susceptibility and molar conductivity. Thermal properties of the title compounds were studied using the thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) and optical polarizing microscopy (OPM).The ligand and coordination compounds exhibit liquid crystalline properties (smectic A).
lanthanides liquid crystaline of azobenzene schiff base, 2014
Journal of Applied Chemistry, 2014
Taylor & Francis ( Liquid Crystals), May 21, 2014