Ali Khandar | University of Tabriz (original) (raw)
Uploads
Papers by Ali Khandar
Inorganica Chimica Acta, Mar 1, 2015
Journal of Molecular Liquids, May 1, 2017
![Research paper thumbnail of Synthesis and Cyclic Voltammetric Studies of BIS[5-((4-ALKOXYPHENYL)AZO)-N-((N)PENTYL, (N)Dodecyl)-Salicylaldiminato] Copper(II) Complex Homologues](https://attachments.academia-assets.com/115146789/thumbnails/1.jpg)
](Iranian Journal of Chemistry & Chemical Engineering-international English Edition, Jun 1, 1999
Journal of inclusion phenomena and macrocyclic chemistry, Jun 6, 2014
Zeitschrift für anorganische und allgemeine Chemie, Apr 1, 2008
Polyhedron, Nov 1, 2016
Abstract This paper reports the synthesis, structure, DFT study and Hirshfeld surface analysis of... more Abstract This paper reports the synthesis, structure, DFT study and Hirshfeld surface analysis of a bimetallic zinc(II) complex with a rigid 20-membered N4 macrocyclic ligand having composition [Zn2([20]mbz2N4)Br2(OCH3)]2·[ZnBr4]·2CH3OH. Single crystal X-ray diffraction indicates that this complex consists of two N2BrO donor sets with distorted tetrahedral coordination environments around the zinc(II) ions. The noncovalent interactions in the complex result in the generation of two-dimensional network. Also, density functional calculations indicated that HOMO → LUMO electronic excitation is an n → π* excitation and the external Br atom is the most chemically active site of the synthesized complex.
Journal of Molecular Liquids, Dec 1, 2016
Inorganica Chimica Acta, May 1, 2013
Abstract The three new zinc (II) complexes (ZnLm, m = 1–3) of potentially hexadentate Schiff base... more Abstract The three new zinc (II) complexes (ZnLm, m = 1–3) of potentially hexadentate Schiff base ligands containing N4O2 and N4S2 donors with pyrrole terminal binding groups H2L1:[(1Z)-1H-pyrrole-2-ylmethylene]{2-[2-(2-{[(1Z)-1H-pyrrole-2-ylmethylene]amino}phenoxy)ethoxy]phenyl}amine, H2L2:[(1Z)-1H-pyrrole-2-ylmethylene]{2-[4-(2-{[(1Z)-1H-pyrrole-2-ylmethylene]amino}phenoxy)butoxy]phenyl}amine and H2L3:[1H-pyrrole-2-ylmethylene][2-({2-[(2-{[1H-pyrrole-2-ylmethylene] amino}phenyl)thio]ethyl}thio)phenyl]amine, were synthesized and physicochemically characterized. Cyclic voltammetry data indicate that the complexes are electrochemically inactive. The molecular structures of the complexes were determined by single crystal X-ray diffraction. The Zn(II) is five coordinated by N4O donor set of the ligands in the ZnL1 and ZnL2 and six coordinated by N4S2 donor set in the ZnL3.
Polyhedron, Apr 1, 2011
ABSTRACT The air-stable di-copper(I) complexes Cu2L(SCN)2 (1) and Cu2L(SCN)1.86I0.14 (2) of the N... more ABSTRACT The air-stable di-copper(I) complexes Cu2L(SCN)2 (1) and Cu2L(SCN)1.86I0.14 (2) of the N4 macrocyclic Schiff base ligand L have been synthesized and characterized by IR, elemental analysis, UV–Vis and crystal structure determination. X-ray analysis of the complexes shows an approximate distorted trigonal planar geometry around each copper(I) ion that is constructed from one N-bonded thiocyanate (or iodide in 2) group and two imine nitrogen atoms. DFT calculations were used to determine the structural features of the Cu2L(SCN)2 complex, and these were consistent with the experimental data for the complex.
Journal of Analytical Chemistry, Apr 1, 2005
Calcium-selective electrodes (Ca-SEs) based on the geometric isomers of di-(1,2,3,6-tetrahydroben... more Calcium-selective electrodes (Ca-SEs) based on the geometric isomers of di-(1,2,3,6-tetrahydrobenzo)-crown esters bearing four ester fragments in the macrocyclic ring were prepared, and their electrochemical properties were studied. It was demonstrated that these electrodes offer promise for medical and biological studies and clinical medicine. The electrodes exhibit high selectivity at crown compound concentrations, ensuring the formation of a 1 : 1 Ca-ionophore complex in the membrane.
Journal of Molecular Liquids, Oct 1, 2021
Abstract In the present research, the synthesis process of ZnFe2O4@SiO2 nanoparticles is expresse... more Abstract In the present research, the synthesis process of ZnFe2O4@SiO2 nanoparticles is expressed and its properties have been evaluated with XRD, SEM, EDS, VSM and FT-IR techniques. The decrease in saturation magnetization from 75.44 to 33.38 emug−1 is attributed to the formation of a silica layer around the ZnFe2O4 nanoparticles. The efficiency of ZnFe2O4@SiO2 nanoparticles as drug delivery carrier was evaluated by loading and releasing of doxorubicin as a model drug. The drug release results showed that the drug release amounts is higher at low pH, which means that the nanoparticles have a pH-sensitive release behavior. The in vitro interaction of ZnFe2O4@SiO2-DOX nanoparticles with calf thymus DNA (CT-DNA) was investigated by UV–Vis and fluorescence spectroscopy. Observation of the hypochromic effect (34%) in UV–Vis spectroscopy studies and data of competitive fluorescence assay with Hoechst 33258 and ethidium bromide probes confirms the intercalation binding mode between CT-DNA and ZnFe2O4@SiO2-DOX nanoparticles. Thermodynamic data recommend that the foremost forces involved in the interaction are of the electrostatic type. The obtained data show the importance of the nanoparticles as carriers for targeted and controlled drug delivery and DNA intercalator, so that better magnetic carriers can be designed using the nanoparticles.
![Research paper thumbnail of Dibromido{<i>N</i>′-[1-(pyridin-2-yl)ethylidene]picolinohydrazide-κ<sup>2</sup> <i>N</i>′,<i>O</i>}cadmium](https://attachments.academia-assets.com/115146783/thumbnails/1.jpg)
](Acta Crystallographica Section E-structure Reports Online, May 31, 2012
Journal of Molecular Structure, 2019
Journal of Nanomaterials, 2011
New Journal of Chemistry, 2015
Synthesis, characterization, cyclic voltammetry, magnetic susceptibility and crystal structures o... more Synthesis, characterization, cyclic voltammetry, magnetic susceptibility and crystal structures of mono and dinuclear macrocyclic cobalt(ii) complexes have been investigated.
Crystal Growth & Design, Jan 16, 2019
International Journal of Pharmaceutics, Jul 1, 2023
Inorganica Chimica Acta, Mar 1, 2015
Journal of Molecular Liquids, May 1, 2017
Iranian Journal of Chemistry & Chemical Engineering-international English Edition, Jun 1, 1999
Journal of inclusion phenomena and macrocyclic chemistry, Jun 6, 2014
Zeitschrift für anorganische und allgemeine Chemie, Apr 1, 2008
Polyhedron, Nov 1, 2016
Abstract This paper reports the synthesis, structure, DFT study and Hirshfeld surface analysis of... more Abstract This paper reports the synthesis, structure, DFT study and Hirshfeld surface analysis of a bimetallic zinc(II) complex with a rigid 20-membered N4 macrocyclic ligand having composition [Zn2([20]mbz2N4)Br2(OCH3)]2·[ZnBr4]·2CH3OH. Single crystal X-ray diffraction indicates that this complex consists of two N2BrO donor sets with distorted tetrahedral coordination environments around the zinc(II) ions. The noncovalent interactions in the complex result in the generation of two-dimensional network. Also, density functional calculations indicated that HOMO → LUMO electronic excitation is an n → π* excitation and the external Br atom is the most chemically active site of the synthesized complex.
Journal of Molecular Liquids, Dec 1, 2016
Inorganica Chimica Acta, May 1, 2013
Abstract The three new zinc (II) complexes (ZnLm, m = 1–3) of potentially hexadentate Schiff base... more Abstract The three new zinc (II) complexes (ZnLm, m = 1–3) of potentially hexadentate Schiff base ligands containing N4O2 and N4S2 donors with pyrrole terminal binding groups H2L1:[(1Z)-1H-pyrrole-2-ylmethylene]{2-[2-(2-{[(1Z)-1H-pyrrole-2-ylmethylene]amino}phenoxy)ethoxy]phenyl}amine, H2L2:[(1Z)-1H-pyrrole-2-ylmethylene]{2-[4-(2-{[(1Z)-1H-pyrrole-2-ylmethylene]amino}phenoxy)butoxy]phenyl}amine and H2L3:[1H-pyrrole-2-ylmethylene][2-({2-[(2-{[1H-pyrrole-2-ylmethylene] amino}phenyl)thio]ethyl}thio)phenyl]amine, were synthesized and physicochemically characterized. Cyclic voltammetry data indicate that the complexes are electrochemically inactive. The molecular structures of the complexes were determined by single crystal X-ray diffraction. The Zn(II) is five coordinated by N4O donor set of the ligands in the ZnL1 and ZnL2 and six coordinated by N4S2 donor set in the ZnL3.
Polyhedron, Apr 1, 2011
ABSTRACT The air-stable di-copper(I) complexes Cu2L(SCN)2 (1) and Cu2L(SCN)1.86I0.14 (2) of the N... more ABSTRACT The air-stable di-copper(I) complexes Cu2L(SCN)2 (1) and Cu2L(SCN)1.86I0.14 (2) of the N4 macrocyclic Schiff base ligand L have been synthesized and characterized by IR, elemental analysis, UV–Vis and crystal structure determination. X-ray analysis of the complexes shows an approximate distorted trigonal planar geometry around each copper(I) ion that is constructed from one N-bonded thiocyanate (or iodide in 2) group and two imine nitrogen atoms. DFT calculations were used to determine the structural features of the Cu2L(SCN)2 complex, and these were consistent with the experimental data for the complex.
Journal of Analytical Chemistry, Apr 1, 2005
Calcium-selective electrodes (Ca-SEs) based on the geometric isomers of di-(1,2,3,6-tetrahydroben... more Calcium-selective electrodes (Ca-SEs) based on the geometric isomers of di-(1,2,3,6-tetrahydrobenzo)-crown esters bearing four ester fragments in the macrocyclic ring were prepared, and their electrochemical properties were studied. It was demonstrated that these electrodes offer promise for medical and biological studies and clinical medicine. The electrodes exhibit high selectivity at crown compound concentrations, ensuring the formation of a 1 : 1 Ca-ionophore complex in the membrane.
Journal of Molecular Liquids, Oct 1, 2021
Abstract In the present research, the synthesis process of ZnFe2O4@SiO2 nanoparticles is expresse... more Abstract In the present research, the synthesis process of ZnFe2O4@SiO2 nanoparticles is expressed and its properties have been evaluated with XRD, SEM, EDS, VSM and FT-IR techniques. The decrease in saturation magnetization from 75.44 to 33.38 emug−1 is attributed to the formation of a silica layer around the ZnFe2O4 nanoparticles. The efficiency of ZnFe2O4@SiO2 nanoparticles as drug delivery carrier was evaluated by loading and releasing of doxorubicin as a model drug. The drug release results showed that the drug release amounts is higher at low pH, which means that the nanoparticles have a pH-sensitive release behavior. The in vitro interaction of ZnFe2O4@SiO2-DOX nanoparticles with calf thymus DNA (CT-DNA) was investigated by UV–Vis and fluorescence spectroscopy. Observation of the hypochromic effect (34%) in UV–Vis spectroscopy studies and data of competitive fluorescence assay with Hoechst 33258 and ethidium bromide probes confirms the intercalation binding mode between CT-DNA and ZnFe2O4@SiO2-DOX nanoparticles. Thermodynamic data recommend that the foremost forces involved in the interaction are of the electrostatic type. The obtained data show the importance of the nanoparticles as carriers for targeted and controlled drug delivery and DNA intercalator, so that better magnetic carriers can be designed using the nanoparticles.
Acta Crystallographica Section E-structure Reports Online, May 31, 2012
Journal of Molecular Structure, 2019
Journal of Nanomaterials, 2011
New Journal of Chemistry, 2015
Synthesis, characterization, cyclic voltammetry, magnetic susceptibility and crystal structures o... more Synthesis, characterization, cyclic voltammetry, magnetic susceptibility and crystal structures of mono and dinuclear macrocyclic cobalt(ii) complexes have been investigated.
Crystal Growth & Design, Jan 16, 2019
International Journal of Pharmaceutics, Jul 1, 2023