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Novel Homoleptic and Heteroleptic Pt (II) β‐oxodithiocinnamic ester Complexes: Synthesis, Characterization, Interactions with 9‐methylguanine and Antiproliferative Activity

Research Authors
Micheal K Farh, Norman Häfner, Helmar Görls, Ingo B Runnebaum, Wolfgang Weigand
Research Date
Research Journal
Zeitschrift für anorganische und allgemeine Chemie
Research Member
Research Pages
e202200349
Research Year
2023

Platinum(II) and palladium(II) complexes mediated by β-hydroxy-dithioesters ferrocenyl derivatives: synthesis, characterization and antiproliferative activity

Research Abstract

Ferrocene and its derivatives compounds have shown a significant role in medicinal organometallic chemistry as an antiparasitic or antibacterial. Therefore, we herein report on the utilization of dithioesters ferrocenyl derivatives as proligands for the synthesis of heteroleptic platinum(II) and homoleptic palladium(II) complexes bearing a conserved O,S binding moiety. The resulting complexes [Pt(L1)(DMSO)Cl] (1), [Pt(L2)(DMSO)Cl] (2), [Pt(L3)(DMSO)Cl] (3), [Pd(L1)2] (4), [Pd(L2)2] (5), and [Pd(L3)2] (6), in which HL1 = methyl 3-hydroxy-3-ferroceneprop-2-enedithioate, HL2 = ethyl 3-hydroxy-3-ferroceneprop-2-enedithioate and HL3 = propyl 3-hydroxy-3-ferroceneprop-2-enedithioate, were fully characterized employing a variety of analytical techniques (NMR spectroscopy, elemental analysis, and mass spectrometry and X-ray structure determination of complexes 2 and 6). Cytotoxicity assays of the synthesized

Research Authors
Micheal K Farh, Ikrame Louzi, Hassan Abul-Futouh, Helmar Görls, Norman Häfner, Ingo B Runnebaum, Wolfgang Weigand
Research Date
Research Journal
Journal of Sulfur Chemistry
Research Member
Research Pages
320-335
Research Year
2023

Improving Sesame (Sesamum indicum L.) Seed Yield through Selection under Infection of Fusarium oxysporum f. sp. sesami

Research Authors
Rasha Ezzat Mahdy 1,* , Dalia A. Gaber 2 , Mohamed Hashem 3 , Saad Alamri 3 and Ezzat E. Mahdy
Research Date
Research Journal
Plants
Research Year
2022

Multi-characterization and antipathogenic bacterial activities of cerium doped manganese nano ferrites: Structural, and magnetic insights

Research Abstract

Due to the uniqueness and the variation of the ionic radius and oxidation states of the implanted transition metals within nano ferrites structure, The nano ferrites are integrated into many technologies including biomedical application the current study aims to optimize the effect of cerium-dopant on the magnetic behavior and antimicrobial properties of manganese nano ferrites. Cerium-doped manganese nano ferrites are synthesized by chemical co-precipitation method followed by thermal annealing at 500 °C. and investigate the dopant effects on its magnetic behavior and antibacterial properties for biomedical applications. The cubic spinel ferrite is successfully formed and CeO2 and Fe2O3 have appeared as minor phases. The particle size is found to be 20–60 nm. The Ce0.05Mn0.95Fe2O4 nano ferrite exhibits the highest saturation magnetization of about 20.47 emu/g with 118.22 Oe as coercivity. EPR factors were affected due to crystalline anisotropy that appeared inside the CexMnX-1Fe2O4 spinel ferrites nanomaterials. In comparison to chloramphenicol, cerium nanoparticles exhibited promising inhibitory action against six pathogenic bacteria (Bacillus cereus, Bacillus subtilis, Micrococcus luteus, Escherichia coli, Klebsiella pneumoniae, and Serratia plymuthica). All cerium treatments showed suitable antibacterial activities. However, the treatments of X = 0.000, X = 0.025, and X = 0.050 were the most effective. For Gram-negative bacteria, the best treatment was X = 0.025, while for Gram-positive isolates, the best treatment was X = 0.050 with MIC 5–10 µg/ml. Our finding, open the pathway to integrate cerium doped manganese nano ferrites in biomedical application including against human pathogenic bacteria.

Research Authors
Abdelnaby M. Elshahawy a,*, M.S. Shalaby b,*, M. Rashad a,c, Eman O. Taha d, Ghada Abd- Elmonsef Mahmoud
Research Date
Research Journal
Inorganic Chemistry Communications
Research Pages
112283
Research Publisher
ELSIEVER
Research Rank
International Q1
Research Vol
163
Research Website
https://www.sciencedirect.com/science/article/pii/S1387700324002661?dgcid=coauthor
Research Year
2024

Changes in Carbon and Nitrogen Metabolites before, at, and after Anthesis for Wheat Cultivars in Response to Reduced Soil Water and Zinc Foliar Application

Research Authors
Rasha E Mahdy, Sameera A Alghamdi, Ahmed Amro, Suzan A Tammam
Research Date
Research Journal
Plants
Research Pages
1261
Research Publisher
MDPI
Research Rank
Q1
Research Vol
11
Research Year
2022

Liquid crystalline polybenzoxazines for manufacturing of technical textiles: water repellency and ultraviolet shielding

Research Abstract

Herein, the presented approach was investigated a unique technique for manufacturing water repellent/UV-protective cotton fabrics through in-situ/thermal polymerization of benzoxazine (BZs) within cotton matrix. Two BZs abbreviated as Ph-p-BZ and Ph-o-BZ were initially synthesized, and their chemical formulas were verified with FTIR, 1HNMR, and 13CNMR spectral mapping data. For Ph-p-BZ, the endothermic peak was observed at 65 ᵒC, to indicate its highly/purified crystalline structure. DSC data for poly-(Ph-p-BZ) and poly-(Ph-o-BZ) showed that, their high Tg was estimated at 210 ᵒC and 195 ᵒC, respectively, due to their highly crystalline/cross-linked network structure. In-situ/thermal polymerization of Ph-p-BZ and Ph-o-BZ as within cotton matrix was subsequently proceeded. Contact angle was observably increased to 125.0° for the fabric coated with four layers of poly-(Ph-p-BZ) (cotton modified with four …

Research Authors
Abdulsalam Mahdy, Mohamed Gamal Mohamed, Kamal I Aly, Hanan B Ahmed, Hossam E Emam
Research Date
Research Department
Research Journal
Polymer Testing
Research Member
Research Pages
107933
Research Publisher
Elsevier
Research Rank
Q1
Research Vol
Volume 119
Research Website
https://scholar.google.com.eg/scholar?oi=bibs&cluster=9886702824701151509&btnI=1&hl=en
Research Year
2023

Construction novel polybenzoxazine coatings exhibiting corrosion protection of mild steel at different concentrations in a seawater solution

Research Abstract

In this work, a new and effective polymeric coating is used to improve mild steel's corrosion resistance. The coating incorporates a Schiff base moiety into a benzoxazine (BZ) precursor, resulting in improved protection against corrosion. The SF-Tol-BZ polymerization behavior and thermal properties were studied using differential scanning calorimetry (DSC) and thermalgravimetric analysis (TGA), respectively, at different curing temperatures. The poly(SF-Tol-BZ) cured at 240 °C had a Td10 value of 604 °C and a Tg of 225 °C. The efficacy of poly(SF-Tol-BZ) coatings in protecting mild steel (MS) from corrosion in a NaCl (3.5%) solution at room temperature was evaluated using various corrosion measurements, including open circuit potential (OCP), and electrochemical impedance spectroscopy (EIS). The results showed that increasing the poly(SF-Tol-BZ) concentration led to a corresponding increase in its protective …

Research Authors
Abdulsalam Mahdy, Kamal I Aly, Mohamed Gamal Mohamed
Research Date
Research Department
Research Journal
Heliyon
Research Member
Research Publisher
Elsevier
Research Vol
9
Research Year
2023

Construction of novel polybenzoxazine coating precursor exhibiting excellent anti-corrosion performance through monomer design

Research Abstract

In this study, we utilized salicylaldehyde (SA) and p-toluidine (Tol-NH2) to synthesize 2-(Z)[(4-methylphenyl)imino]methylphenol (SA-Tol-SF), which was then reduced to 2-[(4-methylphenyl)amino]methylphenol, producing SA-Tol-NH. SA-Tol-NH was further reacted with formaldehyde to create SA-Tol-BZ monomer. Poly(SA-Tol-BZ) was produced by thermally curing it at 210 °C, after synthesizing it from SA-Tol-BZ. The chemical structure of SA-Tol-BZ was analyzed using various analytical techniques such as FT-IR, 1H NMR spectroscopy, and 13C NMR spectroscopy TGA, SEM, DSC, and X-ray analyses. Afterward, we applied the obtained poly(SA-Tol-BZ) onto mild steel (MS) using thermal curing and spray coating techniques. To examine the anticorrosion attributes of MS coated with poly(SA-Tol-BZ), electrochemical characterization was employed. The study proved that poly(SA-Tol-BZ) coating had a high level of …

Research Authors
Kamal I Aly, Amer A Amer, Mahmoud H Mahross, Mostafa R Belal, Ahmed MM Soliman, Mohamed Gamal Mohamed
Research Date
Research Department
Research Journal
Heliyon
Research Member
Research Pages
15976
Research Publisher
Elsevier
Research Vol
9
Research Year
2023

Modification of conducting arylidene copolymers by formation of inclusion complexes: synthesis, characterization, and applications as highly corrosion inhibitors for mild steel

Research Abstract

Modifying the metal surface is one solution to the industry’s growing corrosion problem. Thus, via threading approach and insertion of copolymers (CoP5-7) containing polyarylidenes through the internal cavity beta-cyclodextrin β-CD, novel pseudopolyrotaxanes copolymers (PC5-7) are developed, resulting in mild steel corrosion inhibition. Inhibitors of corrosion based on β-CD molecules adsorb strongly to metal surfaces because of their many polar groups, adsorption centers, many linkages of side chains, and benzene rings. The corrosion inhibition efficiencies IE % statistics have been revised via the Tafel polarization method and Spectroscopy based on the electrochemical impedance (EIS), with PC7 achieving the highest 99.93% in 1.0 M H2SO4; they are mixed-type inhibitors. The chemical composition of the resulting PCs is determined with Fourier transform infrared spectroscopy (FTIR), Scanning electron …

Research Authors
Hemat M Dardeer, Mohamed Abdel-Hakim, Kamal I Aly, Marwa M Sayed
Research Date
Research Department
Research Journal
BMC chemistry
Research Member
Research Pages
77
Research Publisher
Springer International Publishing
Research Year
2023

Synthesis, structure, and optical studies of nanocomposites based on copoly (arylidene cyclohexanone) and CdS nanoparticles for photocatalytic and white LED applications

Research Abstract

For various optical applications, the fabrication of nanocomposites of co-polyarylidene (cyclohexanone/4-tertiary butyl cyclohexanone) CoP6 with various-sized cadmium sulfide CdS nanoparticles via in situ polymerization has been investigated (CoP6-CdS NCs). Several techniques like FT-IR, XRD, XPS, SEM, TGA, TEM, UV–vis, and fluorescence emission have been used to investigate, characterize, and study nanocomposites' structural and optical characteristics. The optical band gap of NCs was found to have a slight redshift, from 2.81 to 2.71 eV, with no alteration to the absorption peak. The crystallinity and phase formation were studied by XRD, which showed that the produced NCs with larger (CdS) particles retain some crystalline structure. The NCs generated were characterized by SEM and TEM, revealing their aggregation inside the polymer matrix. The thermal stability of the produced nanocomposites …

Research Authors
Marwa M Sayed, Mohamed A Osman, Ali A Osman, Essam R Shaaban, Samah Shendy, Kamal I Aly
Research Date
Research Department
Research Journal
Optical Materials
Research Pages
114252
Research Publisher
North-Holland
Research Vol
Volume 143
Research Website
https://scholar.google.com.eg/scholar?oi=bibs&cluster=10581328272709585663&btnI=1&hl=en
Research Year
2023
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