A5068221435- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Fuel Cells and Related Materials
- Conducting polymers and applications
- Free Radicals and Antioxidants
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Molecular Sensors and Ion Detection
- TiO2 Photocatalysis and Solar Cells
- Synthesis of Organic Compounds
- Phenothiazines and Benzothiazines Synthesis and Activities
- Semiconductor materials and devices
- Nonlinear Optical Materials Research
- Microbial Natural Products and Biosynthesis
- Synthesis and biological activity
- Catalytic Cross-Coupling Reactions
- Advanced Chemical Sensor Technologies
- Electrochemical sensors and biosensors
- Phytochemistry and biological activities of Ficus species
- Fungal Biology and Applications
- Food Science and Nutritional Studies
- Synthesis and Reactivity of Heterocycles
- Polymer-Based Agricultural Enhancements
- Microbial bioremediation and biosurfactants
King Saud University
2013-2021
Riyadh Elm University
2016-2019
Monash University
2011-2013
Keratin from various livestock industries is currently a waste material that has potential as source of polyamide polymers could replace fossil fuel derived materials if processing methods can be developed. In this work we have investigated for the dissolution and regeneration keratin. Dissolution keratin (from turkey feather) in ionic liquids was conducted under nitrogen at 130 °C 10 hours. It found [BMIM]Cl, [AMIM]Cl [choline][thioglycolate] dissolve feather without addition solvent or...
This study was carried out to design phenothiazine based dyes by incorporating electron-deficient thiadiazole derivatives as π-spacer. Density functional theory and time-dependent density calculations of the geometries, electronic structures absorption spectra before after binding titanium oxide were out. Effects units on electrochemical properties have been investigated. Compared with reference compound CS1A, Dyes 1–4 display remarkably enhanced spectral responses in red portion solar...
A detailed analysis of the molecular and crystal packing a series pharmaceutically active triazolothiadiazole derivatives is reported. The most notable feature from supramolecular motifs presence inversion dimers due to formation strong S···N chalcogen bonds. This has been unequivocally established via inputs energy calculations PIXEL, topological using approach QTAIM AIMALL, an electrostatic potentials plotted on Hirshfeld surfaces, 3D-deformation densities obtained Crystal Explorer. total...
Abstract Four Donor–Acceptor–Donor (D–A–D) type of donor molecules (M1‐M4) with triphenylamine (TPA) as moiety, thiophene bridge, and thiazolothiazole acceptor unit were designed its photovoltaic parameters equated reference molecule “R.” DFT functional CAM‐B3LYP/6‐31G (d,p) was found best for geometry optimization TD‐CAM‐B3LYP/6‐31G suitable excited state calculations. Among molecules, M4 manifests lowest band gap 4.73 eV, frontier molecular orbital energy levels well distinctive broad...
Current study has been designed to estimate the possible antioxidant, antimicrobial and hemolytic potential of Ficus benjamina different parts (leaves, stem root).All examined extracts fractions were significantly rich in antioxidants exhibited potent activity. GC/MS analysis essential oil identified four compounds eight root, respectively. HPLC indicated phenolic (chlorogenic, p-coumaric, ferulic syringic acids) roots, three (chlorogenic p-coumaric only one (caffeic acid) leaves. Extracts...
Knowledge of the proton transport behaviour in electrolyte materials is crucial for designing and developing novel solid electrolytes electrochemical device applications such as fuel cells or batteries. In present work, high conductivity (approximately 10−3 S cm−1) was observed triflic acid (HTf) containing guanidinium triflate (GTf) composites. The mechanism composite elucidated by comparing diffusion coefficients obtained from NMR measurements. Several orders magnitude enhancement upon...
The current study deals with the characterization of sunflower oil- and protein-based bigels for drug delivery applications. Span-40 was used as an organogelator preparation bigels. were characterized by microscopy, XRD, thermal, texture studies impedance spectroscopy. microscopic revealed that droplets apolar in nature (organogels), while continuum phase polar (protein hydrogel matrix). Incorporation proteins improved stability release drugs followed diffusion kinetics. showed good...
A novel organic ionic plastic crystal (OIPC) electrolyte based on a quaternary ammonium cation and the triflate anion has been synthesized, which shows fast proton transport high thermal stability in solid state when doped with triflic acid.
The electrochemical response of two biologically important phenazine derivatives was examined by using cyclic, differential pulse and square wave voltammetry in a wide pH range 2.0 – 12.0. Cyclic employed for the determination heterogeneous electron transfer rate constant diffusion coefficient analytes. value used evaluation Gibbs free energy, enthalpy entropy changes redox reactions compounds. Differential number protons electrons involved processes. Limits detection quantification were...
Phytochemical investigation of the endophytic fungi Phoma sp. resulted in isolation sclerodin (1), 8,9-dihydro-3,5,7-trihydroxy-1,8,8,9-tetramethyl-5-(2-oxopropyl)-4H-phenaleno[1,2-b]furan-4,6(5H)-dione (2), atrovenetinone (3), and sclerodione (4). Preliminary studies showed that (1) displayed moderate antialgal activity while (4) antifungal activity. Furthermore (2) (3) antibacterial against Bacillus megaterium additionally good towards Eurotium repens. very strong Ustilago violacea.
The present study describes palladium-catalyzed one pot Suzuki cross-coupling reaction to synthesize a series of novel pyridine derivatives 2a-2i, 4a-4i. In brief, 5-bromo-2-methylpyridin-3-amine (1) directly or via N-[5-bromo-2-methylpyridine-3-yl]acetamide (3) with several arylboronic acids produced these in moderate good yield. Density functional theory (DFT) studies were carried out for the 2a-2i and 4a-4i by using B3LYP/6-31G(d,p) basis help GAUSSIAN 09 suite programme. frontier...
Nanoscale proton-channels endow a polyelectrolyte membrane with exciting anhydrous proton conductivity, making it attractive for high-temperature PEMFC applications.
Titanium dioxide (TiO 2 ) nanoparticle was achieved in an alternative sol-gel route, as involved 1 M acidic solution: HCl-tetrahydrofuran (HCl-THF), HNO 3 -tetrahydrofuran (HNO -THF), and ClHNO (ClHNO -THF) solution. Resultant TiO further investigated a systematic analytical approach. Nanoscale structure observed at moderate hydrolysis ratio (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mn...
The present study reports the synthesis of various new derivatives based on 5-aryl-2-bromo-3-hexylthiophene with moderate-to-good yields via a palladium-catalyzed Suzuki cross-coupling reaction. This coupling method involved reaction 2,5-dibromo-3-hexylthiophene several arylboronic acids in order to synthesize corresponding thiophene under controlled and optimal conditions. different substituents (CH3, OCH3, Cl, F etc.) are found have significant electronic effects overall properties...