ahmedabudief

Prof. 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

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A Simple and Reliable Synthesis of Superparamagnetic Magnetite Nanoparticles by Thermal Decomposition of Fe(acac)3

2019 | Keywords superparamagnetic materials, Thermal Decomposition, nanoparticles,
A Simple and Reliable Synthesis of Superparamagnetic Magnetite Nanoparticles by Thermal Decomposition of Fe(acac)3
Magnetic nanoparticles have been largely proposed as means of technological tools due to its value in different fields, especially in biomedicine. Herein, we present a robust, highly reproducible and low-cost method to obtain superparamagnetic magnetite nanoparticles (MNP-II) of about 15±5 nm diameter by thermal decomposition of [Fe(acac)3] in a one pot, two steps method. In the first step, magnetite nanoparticles ... Read more

A comparative study for the effect of nano-sized Moringa oleifera and Delonix regia for removal heavy ions from water

2019 | Keywords Heavy metals, Delonix regia pod, Moringa Oleifera, Nano structures, thermodynamic parameters, Kinetics, Adsorption, Water purification, Removal efficiency,
A comparative study for the effect of nano-sized Moringa oleifera and Delonix regia for removal heavy ions from water
The ability of natural biosorbents for removing heavy metal ionswere investigated by studying the effect of nano sized _Delonixregia _and _Moringa__ oleifera_on adsorption of Cd2+and Pb2+ions from aqueous solution. The investigated biosorbents (_Delonixregia_and _Moringa__oleifera)_ were characterized by FT-IR, SEM, TEM, XRD and EDS techniques.The influence of pH, temperature, adsorbent dosage, contact time and initial metal ion concentration on adsorption process ... Read more

Novel Di- and Tri-azomethine Compounds as Chemo Sensors for the Detection of Various Metal Ions

2019 | Keywords Spectroscopic titration, solvent effect, DFT Calculations, Azomethine, Chemosensors,
Novel Di- and Tri-azomethine Compounds as Chemo Sensors for the Detection of Various Metal Ions
In this study, HNA imine compound was synthesized by a simple one-pot condensation of 2-hydroxy-1-naphthaldhide with 2-amino benzoic acid in 1:1 ratio and HNAP imine compound derived from 2-hydroxynaphthaldhide and 3-amino pyridine. Results of the newly synthesized compounds established by elemental analyses, FT-IR, 1H-NMR, 13C-NMR and electronic spectral studies experiments were consistent with their chemical structures. The theoretical DFT calculations ... Read more

Fabrication, Spectroscopic Characterization, Calf thymus DNA Binding Investigation, Antioxidant and Anti-cancer Activities of Some Antibiotic Azomethine Cu(II), Pd(II), Zn(II) and Cr(III) Complexes

2019 | Keywords Azomethine, Pd (II), Cu(II) Complexes, DNA interaction, Antimicrobial activity, Antioxidant capacity, anticancer activity,
Fabrication, Spectroscopic Characterization, Calf thymus DNA Binding Investigation, Antioxidant and Anti-cancer Activities of Some Antibiotic Azomethine Cu(II), Pd(II), Zn(II) and Cr(III) Complexes
This study was conducted to prepare novel azomethine chelates of Cu(II), Pd(II), Zn(II) and Cr(III) with tri-dentate dianionic azomethine OVAP ligand 2-[(2-Hydroxy-phenylimino)-methyl]-6-methoxy-phenol. The prepared compounds were characterized with the help of elemental analyses, spectral (NMR, FT-IR, UV-vis, mass), conductivity, magnetic and thermal measurements. The spectroscopic data suggest that the parent azomethine ligand bind to the investigated metal ions through both ... Read more

Green synthesis of TiO2 nanoparticles as an efficient heterogeneous catalyst with high reusability for synthesis of 1,2-dihydroquinoline derivatives

2019 | Keywords non-chromatographic methods, 2- dihydroquinolines, 1, efficient catalyst , Neem leaf extract, TiO2 nanoparticles,
Green synthesis of TiO2 nanoparticles as an efficient heterogeneous catalyst with high reusability for synthesis of 1,2-dihydroquinoline derivatives
Nano materials find wide applications due to their behavior at nano scale. TiO2 nanoparticles (TiO2 NPs) was synthesized using Neem leaf extract. This is simple, rapid, eco-friendly, cheaper and green tools for TiO2 NPs synthesis using agricultural waste at lower applied temperature. Characterization of the extracted TiO2 NPs was confirmed by XRD, SEM, EDAX, TEM, HR-TEM, SAED, and FT-IR, respectively. ... Read more

Antimicrobial and anticancer activities of cobalt (III)-hydrazone complexes: Solubilities and chemical potentials of transfer in different organic co-solvent-water mixtures

2019 | Keywords Antimicrobial activity, anticancer activity, hydrazone, Transfer chemical potential,
Antimicrobial and anticancer activities of cobalt (III)-hydrazone complexes: Solubilities and chemical potentials of transfer in different organic co-solvent-water mixtures
The present study focused on the measurement of the solubilities and the calculation of the chemical potentials of transfer of Co(III)-hydrazone complexes in mixtures of water and ethyl alcohol (EtOH), isopropyl alcohol (_i_-PrOH), or _tert_-butyl alcohol (_t_-BuOH) at 298 K, using the assumption that dm mq Ph4As+ = dm mq BPh4- (TATB). A comparison between the chemical potentials of transfer ... Read more

Azomethine metal chelates as an efficient catalyst for oxidation of organic compounds

2019 | Keywords Catalyst, Oxidation, azomethine ligands, metal chelates, H2O2,
Azomethine metal chelates as an efficient catalyst for oxidation of organic compounds
Azomethine ligands and their metal chelates are flexible compounds synthesized from the condensation of an amino compound with carbonyl compounds and extensively used for industrial purposes and also show a broad range of biological efficiencies including antibacterial, antifungal, antiviral, antimalarial, antiproliferative, anti-inflammatory, anticancer, anti-HIV, anthelminthic and antipyretic properties. Azomethine metal chelates show excellent catalytic activity in diversity reactions. Over the ... Read more

Development Of Some Novel Azomethine Compounds As Chemo Sensors

2019 | Keywords receptor, solvent effect, DFT Calculations, Chemosensors, Azomethine,
Development Of Some Novel Azomethine Compounds As Chemo Sensors
Heavy metal pollution possess a great potential threat to the environment and has its own damaging effects to plants, animals and ultimately to human health, because of its release into the environment and water bodies results in a variety of illnesses related with the risk of dermal damage, respiratory problems and several kinds of cancer. On the other hand, the ... Read more

Novel Azomethine Pd(II) and VO(II) Based Metallo-Pharmaceuticals as Anticancer, Antimicrobial and Antioxidant agents: Design, Structural inspection, DFT investigation and DNA interaction

2019 | Keywords Imine complexes, DFT Calculations, Antimicrobial activity, DNA interaction, anticancer activity,
Novel Azomethine Pd(II) and VO(II) Based Metallo-Pharmaceuticals as Anticancer, Antimicrobial and Antioxidant agents: Design, Structural inspection, DFT investigation and DNA interaction
The new NO bi-dentate imine ligand namely (2-[(3-Nitro-benzylidene)-amino]-benzoic acid) (NBA) imine ligand (L) and their Pd(II) and VO(II) complexes have synthesized and characterized utilizing different physiochemical methods including elemental analyses, FT-IR, NMR, molar conductance and magnetic susceptibility measurements. The stability constant of these complexes has also determined. The studies of these complexes were found to have [M (L)] composition where ... Read more

Development of DNA Nanotechnology for Cancer Therapy

2019 | Keywords Nanomedicine, Nanotechnology, Tumor cells,
Development of DNA Nanotechnology for Cancer Therapy
Cancer is one of the main causes of worldwide mortality, due to the absence of precise diagnostic tools for the cancer early stages. Thus, early diagnosis, which supplies important information for therapy of cancer timely, is of great prominence for propagation of cancer cells, controlling the growth of the disease, and improving of patients survival rates. To attain the goals ... Read more