ahmedabudief

Dr. Ahmed Mohamed Abu-Dief

Professor - Professor of Physical and Inorganic Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

320

Like
20 103 262 149 5 107 7.8K 30.9K
275

Newly Added
  • Courses 20
  • Course Supplements 103
  • Courses Tasks 262
  • Publications 149
  • Office hours 5
  • Announcements 107
  • File uploaded 135
  • Downloaded Times 1203

Publications Which contain the keyword: TGA

Some new nano-sized Cr(III), Fe(II), Co(II), and Ni(II) complexes: Structural characterization, electrochemical, antioxidant, antimicrobial, antiviral assessment and DNA interaction

2018-09-11 14:49:30 Keywords NMR, TGA, IR, DNA interaction, Antiviral activity, Antimicrobial activity, Cyclic voltammetry, Nano-sized complexes, Antioxidant activity, CT-DNA,
Some new nano-sized Cr(III), Fe(II), Co(II), and Ni(II) complexes: Structural characterization, electrochemical, antioxidant, antimicrobial, antiviral assessment and DNA interaction
To estimate the biological preference of synthetic small drugs towards DNA target, new metal based chemotherapeutic agents of nano-sized Cr(III), Fe(II), Co(II) and Ni(II) Schiff base complexes having N,N,O donor system were synthesized and thoroughly characterized by physic-chemical techniques. The redox behavior of the Cr(III), Fe(II) and Co(II) complex was investigated by electrochemical method using cyclic voltammetry. IR results proven ... Read more

Some New Nano-sized Mononuclear Cu(II) Schiff Base Complexes: Design, Characterization, Molecular Modeling and Catalytic Potentials in Benzyl Alcohol Oxidation

2018-09-11 14:54:26 Keywords TOF, TON, IR, TGA, Hydrogen peroxide, Catalytic activity, Density Functional Theory, Benzyl alcohol, TEM, Cu(II) Schiff base complexes, NMR,
Some New Nano-sized Mononuclear Cu(II) Schiff Base Complexes: Design, Characterization, Molecular Modeling and Catalytic Potentials in Benzyl Alcohol Oxidation
In the present contribution, some novel Cu(II) complexes were synthesized from tri- and tetradentate imine ligands. All the prepared compounds were elucidated by different physicochemical methods. Density Functional Theory calculations were carried out to explain the equilibrium geometry of the bsisnph and npisnph ligands and their Cu(II) complexes. Interaction of the synthesized ligands with Cu(II) affords nano-sized particles via TEM. ... Read more

Synthesis, structure elucidation, biological screening, molecular modeling and DNA binding of some Cu(II) chelates incorporating imines derived from amino acids

2018-09-11 15:03:04 Keywords Amino acids, Imine, Molecular modeling, Antimicrobial, Antiviral, DNA, IR, TGA, complexes,
Synthesis, structure elucidation, biological screening, molecular modeling and DNA binding of some Cu(II) chelates incorporating imines derived from amino acids
Three tridentate Schiff bases amino acids were prepared by direct condensation of 3-methoxysalicylaldehyde (MS) or 4-diethylaminosalicylaldehyde (DS) with α-amino acid ligands [l-phenylalanine (P), l-histidine (H) and DL-tryptophan (T)]. The prepared Schiff bases amino acids were investigated by melting points, elemental analysis, 1HNMR and 13CNMR, IR, UV–Vis spectra, conductivity and magnetic measurements analyses. Subsequently, copper was introduced and Cu(II) complexes formed. ... Read more

Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of nano-sized Cu(II), Co(II) and Ni(II) chelates as precursors for metal oxides

2018-09-11 14:15:14 Keywords sonochemistry, Synthesis, thermal analyses, Antimicrobial activity, DNA interaction, Cytotoxic activity, nanoparticles, IR, NMR, TGA,
Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of nano-sized Cu(II), Co(II) and Ni(II) chelates as precursors for metal oxides
Three new nano sized Cu(II), Co(II) and Ni(II) complexes of imine ligand derived from the condensation of 2-amino-3-hydroxypyridine and 3-methoxysalicylaldehyde have been prepared and investigated using various chemical techniques such as NMR, elemental analysis, molar conductance, IR, electronic spectra, TGA and magnetic momentmeasurements. The obtained chemical analysis data showed that the synthesis of 1:1 (metal:ligand) ratio and octahedral geometry was ... Read more

DNA interaction, antimicrobial, anticancer activities and molecular docking study of some new VO(II), Cr(III), Mn(II) and Ni(II) mononuclear chelates encompassing quaridentate imine ligand

2018-09-06 07:47:58 Keywords NMR, VO(II), imines, Chelates, thermal analyses, Antimicrobial activity, DNA interaction, Anticancer, IR, TGA, Docking, Cr(III),
DNA interaction, antimicrobial, anticancer activities and molecular docking study of some new VO(II), Cr(III), Mn(II) and Ni(II) mononuclear chelates encompassing quaridentate imine ligand
The present study was conducted to synthesis of some new imine Cr(III), VO(II), Mn(II) and Ni(II) complexes derived from the condensation of 2-amino phenol with 2-hydroxynapthaldehyde were synthesized. The prepared HNPN imine ligand was analyzed by its melting point, IR, 1H NMR and 13C NMR spectroscopies. The investigated HNPN imine complexes were characterized by elemental analysis, FT IR, UV–vis and ... Read more

Development, structural investigation, DNA binding, antimicrobial screening and anticancer activities of two novel quari-dentate VO(II) and Mn (II) mononuclear complexes

2018-09-06 07:45:01 Keywords imines, Structural elucidation, Antimicrobial, Screening, DNA binding, Anticancer efficiency, IR, NMR, TGA,
Development, structural investigation, DNA binding, antimicrobial screening and anticancer activities of two novel quari-dentate VO(II) and Mn (II) mononuclear complexes
Two novel VO(II) and Mn(II) imine chelates derived from the condensation of o-phenylenediamine (PN) with 3-ethoxysalicylaldehyde(ES) were synthesized. The prepared ESPN imine ligand and its chelates were investigated _via_ different analytical and physicochemical tools. Correlation between all the obtained results, the parent ligand behaves as tetra-dentate ONNO ligand and coordinates to Mn(II) and VO(II), in octahedral and square pyramidal geometry, ... Read more

Electric, Thermoelectric and Magnetic Properties of Nickel(II) Imine Nanocomplexes

2018-09-03 15:00:43 Keywords TEM, TGA, Ni-Schiff base complexes, electric, thermoelectric, Magnetic, Nanostructures, IR, semiconductor,
Electric, Thermoelectric and Magnetic Properties of Nickel(II) Imine Nanocomplexes
Production of novel organic semiconductor nanomaterials is essential for enabling the development of personal, portable and flexible electronic modules. This work presents Ni(II)-Schiff base complexes with enhanced Seebeck coefficient and weak ferromagnetic ordering for thermoelectric and magnetic devices. Four Ni(II)-Schiff base complexes (namely [Ni(C12">1212H10">1010N3O4Br)]⋅">⋅⋅2H2O, [Ni(C16">1616H11">1111N3O4)">4)4)]⋅">⋅⋅2H2O, [Ni(C21">2121H14">1414N5O8Br)] and [Ni(C25">2525H17">1717N5O8)">8)8)]⋅1/2">⋅1/2⋅1/2H2O) have been synthesized in nanosized dimensions. The electrical and thermoelectric properties have ... Read more

The electric and thermoelectric properties of Cu(II)-Schiff base nano-complexes

2018-09-03 15:26:52 Keywords TGA, IR, Schiff base, electrical properties, thermoelectric power, power factor, organometal, organic semiconductor, Cu(II) Complexes, Nano-sized complexes,
The electric and thermoelectric properties of Cu(II)-Schiff base nano-complexes
have been widely investigated. However, their thermoelectric (TE) properties remain unreported. This work presents Cu(II)-Schiff base complexes as promising materials for TE power generation. Therefore, three Cu(II)-Schiff base complexes (namely, [Cu(C32H22N4O2)].3 2H2O, [Cu(C23H17N4O7Br)], and [Cu(C27H22N4O8)].H2O) have been synthesized in nanosized scale. The electric and TE properties have been studied and comprehensive discussions have been presented to promote the nano-complexes (NCs) ... Read more

The synthesis of CuO and NiO nanoparticles by facile thermal decomposition of metal-Schiff base complexes and an examination of their electric, thermoelectric and magnetic Properties

2018-09-03 09:31:48 Keywords semiconductor material, thermoelectric, complexes, Schiff base, magneticnanoparticles, NiO, CuO, IR, TGA,
The synthesis of CuO and NiO nanoparticles by facile thermal decomposition of metal-Schiff base complexes and an examination of their electric, thermoelectric and magnetic Properties
In this study, CuO and NiO NPs have been synthesized by facile thermal decomposition of Schiff base complexes and their physical properties have been examined. The synthesized CuO and NiO NPs are crystallized in polycrystalline monoclinic and cubic structures with average particle size 17 ± 0.4 and 62 ± 1 nm, respectively. The electrical conductivity measurements confirm that the conduction ... Read more