A5043764235- Metal complexes synthesis and properties
- Organometallic Compounds Synthesis and Characterization
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Nanoparticles: synthesis and applications
- Synthesis and biological activity
- Synthesis and Characterization of Heterocyclic Compounds
- Crystal structures of chemical compounds
- Essential Oils and Antimicrobial Activity
- Moringa oleifera research and applications
- Medicinal Plants and Neuroprotection
- melanin and skin pigmentation
- Crystallography and molecular interactions
- Synthesis of Tetrazole Derivatives
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Inorganic and Organometallic Chemistry
- Water Quality and Pollution Assessment
- Membrane-based Ion Separation Techniques
- Graphene and Nanomaterials Applications
- Hybrid Renewable Energy Systems
- Protein Interaction Studies and Fluorescence Analysis
- Electrospun Nanofibers in Biomedical Applications
- Cholinesterase and Neurodegenerative Diseases
Alex Ekwueme Federal University, Ndufu-Alike
2018-2024
Ebonyi State University
2018-2022
Federal Teaching Hospital Abakaliki
2019
Federal Medical Centre
2014-2017
A simple and cost-effective material composed of polyacrylonitrile nanofibers containing different concentrations moringa (MR) leaf extracts was fabricated for antimicrobial properties wound dressing. The materials were characterized by scanning electron microscopy, thermal gravimetric analysis, Fourier transmission infrared spectroscopy. antibacterial sensitivity the developed polyacrylonitrile-moringa extract evaluated against Staphylococcus aureus Escherichia coli agar diffusion method....
Synthesis of metallic and semiconductor nanoparticles through physical chemical routes has been extensively reported. However, green synthesized metal are currently in the limelight due to simplicity, cost-effectiveness eco-friendliness their synthesis. This study explored use aqueous leaf extract Costus afer synthesis silver (CA-AgNPs). The optical structural properties resulting were studied using UV-visible spectroscopy, scanning electron microscopy (SEM), transmission (TEM) Fourier...
The health challenges associated with pathogens and ectoparasites highlight the need for effective control approaches. Metal nanoparticles have been proposed as highly tools towards combatting different microbial organisms parasites. present work reports antimicrobial larvicidal potential of biosynthesized Ag/Ag2O using aqueous leaf extract Eupatorium odoratum (EO). constituents act both reducing stabilizing agents. UV-VIS spectra showed surface plasmon resonance. particle size shape was...
Phyto-mediated nanoparticles (NPs) have attracted great attention in recent times due to their unique properties such as high biocompatibility, eco-friendliness, and cost-effectiveness. In this study, silver- zinc oxide (Ag/ZnO-NPs) were prepared using the fruit extract of Capsicum Chinense. The results obtained from both structural, optical characterization confirmed purity composites crystallinity. exhibited two absorption peaks at 376 258 nm with a bang gap energy 3.53 eV, nanoparticulate...
This study presents the validation of protocols for measuring ion exchange capacity (IEC) and alkaline stability anion membranes (AEMs) low-temperature water electrolysis. While are often tested within individual laboratories, their results across multiple laboratories with varying equipment, environmental conditions, personnel qualification remain unverified. The involved Los Alamos National Laboratory (LANL), Renewable Energy (NREL), University Oregon (UO) using same commercially available...
Heteroleptic complexes of zinc(II), copper(II), manganese(II), and cobalt(II) the types [MLL′(H 2 O) ]· n H O [MLL′]· have been synthesized using sodium N -methyl- -phenyldithiocarbamate (L) benzoylacetone (L′). The metal were characterized by elemental analysis, electrical conductance, magnetic susceptibility, infrared (IR), UV-visible spectroscopic studies. conductance measurements revealed nonelectrolytic nature complexes. results analyses, susceptibility measurements, electronic spectra...
A series of mixed ligand dithiocarbamate complexes with a general formula [ML2(py)2], where M = Mn(II), Co(II), Ni(II), and Cu(II), py pyridine, L N-methyl-N-phenyl have been prepared characterised by elemental analysis, FTIR Uv spectroscopy, magnetic moment, thermogravimetric conductance analysis. The infrared spectra showed that symmetrical bidentate coordination occurred the moiety through sulfur atoms, while neutral monodentate nitrogen atom for pyridine molecule in complexes. electronic...
Two novel heterocyclic ligands, 2‐[(5‐fluoro‐1,3‐benzothiazol‐2‐yl)amino]naphthalene‐1,4‐dione (HL 1 ) and 2‐[(5‐methyl‐1,3‐benzothiazol‐2‐yl)amino]naphthalene‐1,4‐dione 2 ), their Pd(II), Ni(II) Co(II) complexes were prepared characterized using H NMR, 13 C infrared UV–visible spectroscopic techniques, elemental analysis, magnetic susceptibility, thermogravimetry molar conductance measurements. The spectral data showed that the chelation behaviours of ligands towards transition metal ions...
Abstract Heteroleptic divalent metal complexes [M(L) (bipy)(Y)]• n H 2 O (where M = Mn, Co, Ni, and Zn; L Schiff base; bipy 2,2’-bipyridine; Y OAc 0, 1) have been synthesized from pyrimidine base ligand 3-{( E )-[(4,6-dimethylpyrimidin-2-yl)imino]methyl} naphthalen-2-ol, 2,2’-bipyridine metal(II) acetate salts. The its were characterized by analytical (CHN elemental analyses, solubility, melting point, conductivity) measurements, spectral (IR, UV-vis, 1 13 C-NMR MS) magnetometry. Uv-vis...
Some mixed-ligand complexes of Zn(II) and Ni(II) derived from the sodium salt N -alkyl- -phenyl dithiocarbamate benzoic acid have been prepared. The are represented as ZnMDBz, ZnEDBz, NiMDBz, NiEDBz (MD: -methyl- dithiocarbamate, ED: -ethyl- Bz: benzoate); their coordination behavior was characterized on basis elemental analyses, IR, electronic spectra, magnetic conductivity measurements, quantum chemical calculations. moment measurement spectra were in agreement with four proposed...
Copper(II), cobalt(II) and nickel(II) bis(N-methyl-N-phenyl dithiocarbamate) complexes having the general formula [M{S2CN(MePh)}2] (where M = Cu, Co Ni) have been prepared characterized by spectral thermal analysis. The IR spectra suggest that coordination of dithiocarbamate (DTC) occurred through two sulfur atoms in a symmetrical bidentate fashion. electronic spectra, conductance measurement magnetic moment analysis support proposed geometry for electronically dilute complexes. results...
Three Ni(II) dithiocarbamate complexes, [Ni(buphdtc)2] (1), [Ni(buphdtc)(PPh3)(NCS)] (2) and [Ni(buphdtc)(PPh3)(NC)] (3) (where bu = butyl ph phenyl), were synthesized characterized by elemental analysis, UVvis, FTIR spectroscopies. Complexes 1 2 further single-crystal X-ray structural analysis. The analysis indicates a slightly distorted square planar geometry. In 3, the influences of auxiliary ligands (PPh3, NCS, NC) on their steric electronic properties observed. Thermal studies complexes...
A sequence of transition metal complexes Mn(II), Co(II), Ni(II), and Cu(II) incorporating a novel pyrimidinyl based Schiff base ligand, 2-(4,6-dimethylpyrimidin-2-ylamino)naphthalene-1,4-dione (HL) 2,2'-bipyridine has been synthesized characterized using elemental, magnetic, conductance, infrared (FT-IR), nuclear magnetic resonance (1H- 13C-NMR), electronic (UV-Vis), electrospray ionization mass spectrometry (ESI-MS), thermographic analysis (TGA), molecular docking studies. The acquired...