Abdullah Al-sehemi

Abdullah Al-sehemi
King Khalid University | KKU

الاستاذ الدكتور /عبدالله غدران مطر السهيمي

About

628
Publications
72,902
Reads
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6,355
Citations
Introduction
Dr. Abdullah G. Al-Sehemi is a . He received his PhD from University of Leicester, UK. He was Member of the Saudi Consultative Council and was the Dean of Scientific Research and director of (RCAMS). He is an author of over 401 publications, co-inventor of several patents and the editor of 8 books. He is working experimentally and computationally in the field of advanced functional materials, stereochemistry and drug design.
Additional affiliations
January 2008 - present
King Khalid University
Position
  • Professor of organ
January 2008 - present
King Khalid University
Position
  • Professor Organic and computational chemistry
Description
  • Dr. Al-Sehemi, Professor in the department of Chemistry, He Published a number of papers and is author of a series books. He is working experimentally and computationally in the field of advanced functional materials, nanomaterials and drug design.
October 2000 - present
King Khalid University
Position
  • Director of the Research Center for Advance Materials Science

Publications

Publications (628)
Article
Full-text available
Coronavirus disease 2019 (COVID-19) is a highly contagious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The gold standard method for the diagnosis of SARS-CoV-2 depends on quantitative reverse transcription-polymerase chain reaction till now, which is time-consuming and requires expensive instrumentation, and the...
Article
Activated carbon is one of the multi functional materials which promotes the electrochemical catalysis for hydrogen production in greener way. In the present work, the fruit shells of Tamarindus indica have been used to synthesize the carbon structure at different temperatures by chemical vapour deposition method. The structural confirmation has be...
Article
As a new optical material with huge potential application, nanomaterials have attracted much attention in the field of ultrafast photonics due to their proper band gap, multiple structure and stable chemical property. Although there have been many reports on light intensity modulators in ultrafast photonics fabricated by nanomaterials in recent yea...
Article
The structure of the title compound (I) (C17H19NO2)2 the Schiff base, {3-Methoxy-6-[(2,4,6-trimethyl-phenylamino)-methyl]-phenol} was characterized by ¹H, ¹³C NMR, UV–VIS and IR spectroscopic techniques. The crystal structure was determined by X-ray analysis. The compound (I) was crystallized in the Monoclinic space group P21/c, with a = 25.9845 (1...
Article
The population rise and economic development lead to increased energy utilization. This energy utilization is largely based on fossil fuel combustion and the industrial operations in oil and gas industry that result in CO2 emissions. The solvent mixtures of piperazine/diethanolamine (PZ/DEA) were examined to substitute for improved carbon dioxide (...
Preprint
Full-text available
In this article, a new Schottky diode based on a transparent conducting polymer 2-(4-fluorophenyl)-2-oxoethyl-2-methylprop-2-enoate (PFPAMA) that is doped up to 5% with ZnO is presented. PFPAMA 1 L A T E X template 2 A novel conducting polymer-based diode is a promising transparent polymer that is inclined towards n-type behavior with the potential...
Preprint
Full-text available
Tuning of nonlinear absorption and optical limiting action of MoS 2 with different morphologies was demonstrated by open aperture Z-scan technique under Nd: YAG laser (532 nm, 7 ns, 10 Hz, 1-5 GW/cm 2) excitation. The morphology of pristine MoS 2 prepared by hydrothermal method at various reaction times gets altered from nanoclusters (24 h) to nano...
Article
Aim: To evaluate the binding interaction of diflunisal at active site of Human Serum Albumin (HSA), an important enzyme responsible for osteoarthritis disease. Methodology: The gas phase molecule was optimized with B3LYP/6-311G** basis set, while a single point energy calculation was carried out for the molecule lifted from the active site. Bader’s...
Article
Full-text available
Semiconductor-based photocatalytic technology is regarded as an efficient pathway for resolving the energy scarcity across the globe. In this regard, graphitic carbon nitride (g- C3N4)-based materials could be alternatively employed in photochemical applications such as photovoltaic energy generation via CO2 photoreduction and water splitting, alon...
Article
Full-text available
Smart nanofibers have been used to create sensing tools for various purposes, such as anticounterfeiting. However, electrospinning produces nanofibers at a low yield, high cost, and requires high voltage. The recently invested solution blowing spinning method generates nanofibers at low cost and high yield without the need for high voltage. Moreove...
Article
Pristine and Mn–TiO2 photocatalysts was prepared employing sophisticated hydrothermal technique. TiO2, 0.2 M, 0.4 M Mn–TiO2 photocatalysts analysis were done by using standard characterization studies. The morphology of the pure TiO2 photocatalyst showed the large agglomeration of nanoparticles. While the dopant Mn ions influenced higher on host la...
Article
Full-text available
Since atomically thin two-dimensional (2D) graphene was successfully synthesized in 2004, it has garnered considerable interest due to its advanced properties. However, the weak optical absorption and zero bandgap strictly limit its further development in optoelectronic applications. In this regard, other 2D materials, including black phosphorus (B...
Article
Spectroscopic investigation and Density Functional Theory (DFT) and Time-Dependent Density Functional Theory (TD-DFT) calculations have been carried out to delineate the mechanism of fluorescent detection of Al(III) by a new Schiff base (CN3) in an aqueous solution. CN3 was synthesized and characterized using ¹H and ¹³C NMR and mass spectral techni...
Article
The recent COVID-19 outbreak caused by the novel coronavirus SARS-CoV-2 has an immense impact on global health and economy. Although vaccines are being used, urgent need of drugs based on natural products with high efficacy and safety is a pressing priority. Quinoline alkaloids are well known for their therapeutic action against malaria; initially,...
Article
The rapid development of luminescent solar concentrators (LSCs) is largely attributable to their advantageous features including colorful aesthetics, design flexibility, and their ability to harvest both outdoor (solar) and indoor (light emitting diodes (LD)) light. In this study, we fabricated and characterized a highly efficient LSC containing a...
Article
The development of copolymerized carbon nitride (CN)-based photocatalysts may support advances in photocatalytic overall water splitting. However, the recombination of charge carriers is the main bottleneck that reduces its overall photocatalytic activity. To overcome this problem, the construction of heterojunction technology has emerged as an eff...
Article
Full-text available
Natural gas is an important and fast-growing energy resource in the world and its purification is important in order to reduce environmental hazards and to meet the required quality standards set down by notable pipeline transmission, as well as distribution companies. Therefore, membrane technology has received great attention as it is considered...
Article
Full-text available
We investigated how different doses of microwave irradiation (MR) affect seed germination in Sorghum, including the level of remediation against textile and surgical wastewater (WW) by modulating biochemical and morpho-physiological mechanisms under glutamic acid (GA) application. The experiment was conducted to determine the impact of foliar-appli...
Article
Full-text available
The world is now facing intolerable damage in all sectors of life because of the deadly COVID-19 pandemic caused by the severe acute respiratory syndrome coronavirus 2. The discovery and development of anti-SARS-CoV-2 drugs have become pragmatic in the time needed to fight against this pandemic. The non-structural protein 3 is essential for the rep...
Article
In this study, we developed an effective method for converting lignin into useful compounds to replace fossil-based products. The dual catalyst bed was used to catalyze the resulting pyrolysis vapors over it. A maximum bio-oil yield of 44.058 wt.% and gas yield of 28.9 wt.% along with 26.52 wt.% of bio-char is achieved. The biomass product (gas and...
Article
The outbreak of the COVID-19 pandemic is partially due to the challenge of identifying asymptomatic and pre-symptomatic carriers of the virus, and thus highlights a strong motivation for diagnostics that can be rapidly deployed with high sensitivity. On the other hand, several concerned SARS-CoV-2 variants, including the Omicron, are required to be...
Article
Full-text available
COVID-19 is a serious respiratory infection caused by a beta-coronavirus that is closely linked to SARS. Hypoxemia is a symptom of infection, which is accompanied by acute respiratory distress syndrome (ARDS). Augmenting supplementary oxygen may not always improve oxygen saturation; reversing hypoxemia in COVID-19 necessitates sophisticated means t...
Article
Atherosclerosis is a sort of chronic inflammatory disease mainly caused by the accumulation of lipoproteins on the blood vessel walls. Many cardiovascular diseases with high mortality, like ischemic cerebral stroke and ischemic heart disease, are promoted by atherosclerosis. Currently, there is much space for improvement in clinical monitoring and...
Article
Full-text available
In the present investigation, a variety of quinoidal oligomers with different arrangements and distinctive fused shapes of thiophene rings are studied. These quinoidal oligomers were further explored for the systematic heteroatom substitution using state-of-art quantum computational methods. The substitution of S atoms by O and N in oligomer compou...
Article
Full-text available
Possible polymorphic forms of the chemotherapy drug, temozolomide were predicted from the ab initio and DFT methods. The lattice minimization via distributed multipole analysis was carried out for the hypothetical generated structures. A crystal with unit cell parameters close to the real one and of same space group was retrieved, with partly simil...
Article
The structural alteration of carbon nitride (CN) for photocatalytic CO2 reduction is a promising research topic in environmental and energy sectors. This work discusses the fabrication of photocatalyst through a heterojunction architecture, obtained from the molecular engineering of electron-rich organic monomer 2,6-pyridinedicarboxylic acid (PDA)...
Article
In recent years, the most appealing way to harvest solar energy via cost-effective, renewable, clean and sustainable technology is the artificial photocatalysis which has drawn multidisciplinary attention to mitigate the upcoming energy disaster and environ- mental issues in the arena of sustainable development of society. For this purpose, sig- nifi...
Article
This work deals with the development of novel composites from renewable resources applicable for manufacturing flexible wearable antennas. Two types of fillers (rice husk ash (RHA) and microcrystalline cellulose (MCC)) from renewable resources and an alternative filler (standard silica) were incorporated into the natural rubber (NR) to examine the...
Article
Full-text available
Breast cancer (Bca) causes the highest rate of mortality in females owing to the out-of-control cell division in breast cells. In this work, we perform an in-silico screening based on molecular docking and molecular dynamic of curcumin derivatives against ERα. In this study, we carry out, molecular docking of fifty (50) curcumin derivatives having...
Article
Full-text available
Three-dimensional (3D) cobalt molybdate (CoMoO4) hierarchical nanoflake arrays on pencil graphite electrode (PGE) (CoMoO4/PGE) are actualized via one-pot hydrothermal technique. The morphological features comprehend that the CoMoO4 nanoflake arrays expose the 3D, open, porous, and interconnected network architectures on PGE. The formation and growt...
Article
Supramolecular organogels that respond to external stimuli have been extensively investigated; however, assembling a liquid crystal-based fluorescent gel with an efficient thermoreversible activity is a difficult challenge. Various pentafluorobenzene-containing aromatic adducts have been synthesized via nucleophilic aromatic substitution (SNAr), wh...
Article
Full-text available
ZnO is well-known electron transport material; however, its charge carrier mobility is restricted due to lower conductivity and hysteresis losses. To overcome these issues, 1–3 wt% Mg-doped ZnO nanofibers were synthesized via electrospinning and then applied as electron transport layer (ETL) of perovskite solar cell. The structural, morphological,...
Article
Due to their combination of enhanced electrical conductivity and high-performance electron and ion transport channels, binary metal oxides with well-morphological optimized electrode materials have been attracted the greatest research attention for high-performance supercapacitor applications. An easy co-precipitation method is used to synthesize Z...
Article
The purpose of this study was to demonstrate that the Cu–Mg substituted zinc ferrite effect can be employed for photocatalytic dye degradation and the catalytic reduction of 4-nitrophenol. Methylene blue (MB) dye was completely degraded and harmful 4-nitrophenol (4-NP) completely transformed into useful 4-aminophenol using the as-synthesized Zn1-xC...
Article
The conceptual layout of monoamine oxidase (MAO) inhibitors has been modified to explore their potential biological application in the case of neurological disorders for the time being. The current review article is an effort to display the summation of innovative conceptual prospects of MAO inhibitors and their intriguing chemistry and bioactivity...
Article
Well-organized water splitting semiconducting photocatalyst is an important concept, but stimulating aimed at decisive energy and environmental emergencies. In this context, visible light-based photocatalytic water splitting with low-dimensional semiconducting materials is proposed to produce sustainable energy. Here we optimized the sequential of...
Article
A metal-insulator-semiconductor (MIS) diode based on the Bi 2 Se 3 3D topological insulator on p-Si substrate was fabricated for use as a photodiode with the Al/p-Si/Bi 2 Se 3 /Al structure. The current-voltage, series resistance, and impedance characteristics were investigated using standard techniques and a new series resistance compensated metho...
Article
SARS-CoV-2, which causes COVID-19 disease, has proven to be a disastrous pandemic due to its contagious nature. This study has been planned to theoretically explore some antidotes against this virus from natural compounds. A total of 150 compounds from the shogaol class and shogaol derivatives (SDs) have been screened whereas 50 among those, which...
Article
Background Tuberculosis is one of the oldest known infectious diseases to mankind, caused by Mycobacterium tuberculosis. Although current treatment using first-line anti-tubercular drugs is proven to be effective, an infection caused by resistant strains as in multidrug-resistant and extensive drug- resistant tuberculosis is still an impending chal...
Article
Full-text available
Nigella sativa is known for the safety profile, containing a wealth of useful antiviral compounds. The main protease (Mpro, 3CLpro) of severe acute respiratory syndrome 2 (SARS-CoV-2) is being considered as one of the most attractive viral target, processing the polyproteins during viral pathogenesis and replication. In the current investigation we...
Article
Full-text available
Arsenic in water bodies has increased to toxic levels and become a major issue worldwide. Among various treatment methods, the removal of As from polluted water with low-cost and environmental-friendly sorbents such as biochar is considered a promising technique nowadays. In a recent experiment, the treatment of As-contaminated water using egg shel...
Article
Full-text available
Field-effect transistors (FET) composed of transition metal dichalcogenide (TMDC) materials have gained huge importance as biosensors due to their added advantage of high sensitivity and moderate bandgap. However, the true potential of these biosensors highly depends upon the quality of TMDC material, as well as the orientation of receptors on thei...
Article
It is well-known that π-conjugation plays an important role to tune the nonlinear optical (NLO) response of donor-π-conjugated-acceptor compounds. Fullerenes (C60) are one of a few compounds who are abounded with π-conjugation and perhaps are the largest π-conjugation compounds. In the present study, we systematically designed C60 derivatives (2 (f...
Article
Full-text available
Gold nanoparticles are synthesized by reducing Au ions using the liquid metabolic waste of Indian Gir cow (A-2) urine. Various bio-molecules present in cow urine are effectively used to reduce gold ions to gold nanoparticles in a single step. The synthesized nanomaterials were characterized using advanced characterizations which ensures the formati...
Article
Carbon nitride (CN) is regarded as an excellent metal-free semiconductor known for its potential solar fuel generation and pollutant degradation. In this study, a carbon richer substance, (5,8-dibromoisoquinoline (BQ)) was used to feed its catalytic function through conventional copolymerization (molecular doping) process at 550°C under a nitrogen...
Article
Nematicons in liquid crystals with Kerr law nonlinearity are studied using three recent analytical techniques. An essential goal of this study is to discover a variety of nonlinear system solution types, such as singular and solitary wave solutions in both bright and dark states. It also seeks to highlight its answers’ uniqueness by comparing and c...
Article
Full-text available
Analytic and approximation solutions to the Ill–posed Boussinesq (IPB) problem are constructed using two modern computational and numerical approaches. In shallow water, this equation represents the propagation of waves under the effect of gravity. It also examines the propagation of nonlinear strings and lattices in one-dimensional nonlinear syste...
Article
The current investigation applies the dual approach containing quantum chemical and molecular docking techniques to explore the potential of benzothiadiazole (BTz) and its derivatives as efficient electronic and bioactive materials. The charge transport, electronic and optical properties of BTz derivatives are explored by quantum chemical technique...
Article
Full-text available
Synthesis of novel Organotin(IV) carboxylate complexes, Anticancer potential and Molecular Docking of synthesized complexes.
Article
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In dye-sensitized solar cells, transparent metal oxide working electrodes play a vital role in defining the power conversion efficiency. It was found that the size of nanoparticles influences the electrical, optical properties of these electrodes. Herein, we describe the synthesis of ZnO with zinc acetate dihydrate and different stabilizers (diethy...
Article
Full-text available
COVID-19 is more virulent and challenging to human life. In India, the Ministry of AYUSH recommended some strategies through Siddha, homeopathy, and other methods to effectively manage COVID-19 (Guidelines for AYUSH Clinical Studies in COVID-19, 2020). Kabasura Kudineer and homeopathy medicines are in use for the prevention and treatment of COVID-1...
Article
Full-text available
Due to the multifaceted pharmacological activities of chalcones, these scaffolds have been considered one of the most privileged frameworks in the drug discovery process. Structurally, chalcones are α, β-unsaturated carbonyl functionalities with two aryl or heteroaryl units. Amongst the numerous pharmacological activities explored for chalcone deri...
Patent
Full-text available
A cluster of pneumonia cases and COVID-19 pandemic that started in Wuhan, China, was caused by novel beta coronavirus, the 2019 novel coronavirus (2019-nCoV). This has led to many number of deaths and many were infected worldwide owing to the absence of effective therapies against coronavirus 2 of the severe acute respiratory syndrome (SARS-CoV-2)....
Article
Full-text available
The phytochemicals can play complementary medicine compared to synthetic drugs considering their natural origin, safety, and low cost. Phytochemicals hold a key position for the expansion of drug development against corona viruses and need better consideration to the agents that have already been shown to display effective activity against various...
Article
A new triol-based compound, teucriol (1) and eleven others (2-12), were first time isolated from the ethanol extract of Teucrium stocksianum Bioss using bioassay guidelines, and their structures were established using various spectroscopic techniques. Antibacterial, antifungal, insecticidal, cytotoxic, phytotoxic, and antioxidant properties of etha...
Article
We confirmed a specific copolymerization (molecular doping) method for the covalent integration of 2,4-dihydroxyoxazole (DHO) monomer within the framework of carbon nitride (CN). The obtained composites xCN/DHO reveal a sophisticated dual-phase photocatalytic activity, which can effectively reduce and oxidize the CO2 and NO2 sources in an aqueous s...
Article
ZnO/CdO and ZnO/NiO nanocomposite (NC) thin films were synthesized using co-precipitation by the sol-gel method. ZnO/CdO and ZnO/NiO are varied as volume ratio (ZnO/CdO: 2/1 mL and 2.5/0.5 mL; ZnO/NiO: 2/1 mL and 2.5/0.5 mL). The optical characteristics were analytically investigated using the transmittance, absorbance and reflectance data. While t...
Article
The possibility of tuning the chemical structures of oligothiophenes offers various applications in designing of optoelectronics and nonlinear optical (NLO) materials. In the current study, we report a computational study of quinoidal oligothiophenes to explore the influence of type of π-conjugation chains and nature of terminal acceptor groups to...
Article
Full-text available
Over recent decades, much attention has been given to imply the natural products in cancer therapy alone or in combination with other established procedures. Insects have a rich history in traditional medicine across the globe, which holds promise for the future of natural product drug discovery. Cecropins, peptides produced by insects, are compone...
Article
Background In recent days, COVID-19 cases are increasing globally at an alarming rate due to the COVID-19 second wave despite the mass vaccination programs. Search for the potential vaccine for SARS-CoV-2 is still under progress. The epitope-based vaccine is effective and is a cornerstone in vaccine development. The quick prediction of epitopes cou...
Article
Recently, the graphite based heterogeneous photocatalysts has attained tremendous research attention in various environmental applications. Among them, the graphitic carbon nitride (g-C3N4) is categorized as a unique solar active particle with its outstanding intrinsic properties i.e., adequate band configuration, excellent light absorptivity and t...
Article
Full-text available
Two imine compounds named as (E)-2-(((3,4-dichlorophenyl)imino)methyl)phenol (DC2H) and (E)-4-(((2,4-dimethylphenyl)imino)methyl)phenol (DM4H) are synthesized, and their crystal structures are verified using the single-crystal X-ray diffraction (XRD) technique. The crystal structures of the compounds are compared with the closely related crystal st...