42 results match your criteria: "Arignar Anna Govt. Arts College[Affiliation]"
Luminescence
November 2024
UNESCO - UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa.
The semiconducting nature of CeFeO/CeO/FeO nanocomposite has permitted the degradation of the organic toxic dye methylene blue under the irradiation of ultraviolet and visible light portions of solar radiation. Fullprof-assisted Rietveld refinement analysis, performed using the Match software, has revealed the orthorhombic nature of CeFeO. In addition, in the synthesized material, the cubic phase byproduct CeO was found due to the highly oxidizing nature of the cerium element.
View Article and Find Full Text PDFHeliyon
August 2024
PG and Research Department of Physics, Arignar Anna Govt. Arts College, Namakkal, Tamil Nadu, 637002, India.
The solvation behavior of protein is an important factor in protein-based food products. In the present study, the xylitol (XY) - ovalbumin (OVN) interaction in an aqueous solution of different pH conditions is analyzed in two methods. In one method, the thermodynamic parameters Gibbs free energy, free volume, and internal pressure are calculated by using ultrasonic velocity, density, and viscosity in addition the refractive index is also measured.
View Article and Find Full Text PDFHeliyon
April 2024
Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, 604 407, Tamil Nadu, India.
The organic single crystals of Cyclohexylammonium picrate (CHAP) had been grown using the method of slow evaporation solution growth. A determination was made regarding the solubility of the substance. The crystal's lattice cell parameters and morphology were characterized using single-crystal X-ray diffraction and powder X-ray diffraction techniques.
View Article and Find Full Text PDFHeliyon
March 2024
Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran, 3126, Saudi Arabia.
The use of nanostructures in targeted drug delivery is effective in decreasing anticancer drug toxicity. Here, we discuss the theoretically predicted adsorption and interaction behavior of hydroxyurea [HU] with nano metal cages (nmC). HU interact the nmC through the N4 in primary amine with energies of -29.
View Article and Find Full Text PDFACS Omega
January 2024
Department of Chemistry, Arignar Anna Govt. Arts College, (Re-accredited by the NAAC with "B+" and Affiliated to Annamalai University, Chidambaram), Villupuram 605 602, Tamilnadu.
An easy and simple spiroannulation of the Morita-Baylis-Hillman adduct of isatin derivatives with anthracene was achieved in moderate-to-good yields (37-75%). The spiroderivatives synthesized in this work exhibited green fluorescence properties. The reaction occurred in metal-free eco-friendly K-10 clay-mediated conditions.
View Article and Find Full Text PDFHeliyon
October 2023
Department of Physics, Periyar University Centre for Post Graduate and Research Studies, Dharmapuri, 635205, India.
As of today, there have been 612 million confirmed cases of coronavirus disease (COVID-19) around the world, with over 6 million fatalities. Tecovirimat (TPOXX) is an anti-viral drug, and it was the first drug approved for the treatment of anti-pox virus in the US. However, the effectiveness of this drug against COVID-19 has not yet been explored.
View Article and Find Full Text PDFHeliyon
September 2023
Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, 604407, Tamil Nadu, India.
The therapeutic properties of 5-Bromonicotinatic acid (5BNA) were studied for antiviral illnesses like Hepatitis A, Hepatitis B and Hepatitis C and the influence of electron-donating and electron-withdrawing properties of functional groups on the nicotinic acid was evaluated and represented in this study using the DFT approach. The molecular parameters were determined for both gases as well as for various solvent phases. The reactive areas in the compound are examined utilising Fukui analysis.
View Article and Find Full Text PDFHeliyon
May 2023
Department of Physics, Arignar Anna Govt.Arts College, Cheyyar, 604407, Tamil Nadu, India.
The DFT B3LYP-LAND2DZ technique is used to examine interactions of Methyl nicotinate with copper selenide and zinc selenide clusters. The existence of reactive sites is determined using ESP maps and Fukui data. The energy variations between HOMO and LUMO are utilised to calculate various energy parameters.
View Article and Find Full Text PDFRSC Adv
March 2023
Department of Chemistry, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
First-principle calculations were systematically carried out to explore the structural and electronic properties of the non-covalent interaction of procainamide (PA) anti-arrhythmias drug molecules on silver-loaded and gold-loaded silica nanostructures. Computed adsorption energies presented a higher affinity of PA towards the Ag-SiO as compared with Au-SiO surfaces. The non-covalent interaction analysis revealed a weak van der Waals type of forces and hydrogen bonding, associated with a noticeable repulsive steric interaction.
View Article and Find Full Text PDFNeotrop Entomol
February 2022
College of Horticulture and Landscape Architecture, Southwest University, Chongqing, People's Republic of China.
The present study focused on preparing a nano-ointment base integrated with biogenic gold nanoparticles from Artemisia vulgaris L. leaf extract. As prepared, nano-ointment was characterized by using Fourier-transform infrared spectroscopy, and the morphology of the nano-ointment was confirmed through a scanning electron microscope.
View Article and Find Full Text PDFHeliyon
October 2021
Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
The theoretical (Freebase, Cationic species) and experimental investigations on the molecular structural, spectroscopic characterization, and electronic properties of N2M5MB are reported. The most stable structure of the N2M5MB was analysed by employing Density Functional Theory (DFT) at different functional such as B3LYP, PBEPBE, TPSSTPSS and IEF-PCM (Freebase) and Cationic (B3LYP, IEF-PCM)/ 6-311++G (d,p) basis set level. The Potential Energy Scan (PES) analysis has been employed to investigate the conformational preference of the title molecule.
View Article and Find Full Text PDFJ Mol Model
August 2021
Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia.
The present work explores the structural parameters and vibrational frequencies as well as molecular interactions of benzodiazepine derivatives, such as clothiapine (CT), clozapine (CZ), and loxapine (LX). Employing fitting experimental data to theoretical results is used to assess the structural parameters of heading composites. The main assignment is passed out according to the overall distribution of energy of the vibrational modes.
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July 2021
Department of Physics, Panimalar Institute of Technology, Chennai, 600123, Tamilnadu, India.
The quantum mechanical density functional theory (DFT) approach was used to analyze vibrational spectroscopy for the title compound 2-chloroquinoline-3-carboxaldehyde, and the observations were compared to experimental results. B3LYP with the 6-311++ G (d, p) basis set produces the optimized molecular structure and vibrational assignments. The charge delocalization and hyper conjugative interactions were studied using NBO analysis.
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May 2021
Department of Physics, Madras Christian College, East Tambaram, 600059, Tamilnadu, India.
Computational calculations of 5-bromo-3-nitropyridine-2-carbonitrile (5B3N2C) on molecular structure and on energy are implemented using the 6-311++G(d,p) basis set by DFT/B3LYP method. The UV-Vis spectrum of 5B3N2C was obtained by TD-DFT with chloroform as a solvent. The analysis of molecular electrostatic potential (MEP) and frontier molecular orbital (FMO) were used to evaluate, the entire electron density and organic reactive sites of 5B3N2C.
View Article and Find Full Text PDFHeliyon
April 2021
Department of Physics, Periyar University PG Extension Centre, Dharmapuri, 636701, India.
The IUPAC name of curcumin is (1E, 6E)-1,7-Bis(4-hydroxy-3methoxyphenyl) hepta-1,6-e-3,5-dione (7B3M5D) and is characterized by spectroscopic profiling with FT-IR and FT-Raman spectra obtained both experimentally and theoretically. PED analysis was done for the confirmation of minimum energy obtained in the title compound. Optimized geometrical parameters are compared with experimental values obtained for 7B3M5D by utilizing B3LYP functional employing 6-311++G (d,p) level of theory.
View Article and Find Full Text PDFHeliyon
March 2021
Department of Chemistry, St Berchmans College (Autonomous), Changanassery, 686101, Kerala, India.
Single crystals of Sodium Oxalate (SO) were grown by adopting the slow evaporation solution growth approach from aqueous solution. The prominent functional groups seen in the SO crystal were distinctly detected with Fourier transform infrared and FT-Raman spectral analysis. The cut-off wavelength of 230 nm was measured using Ultraviolet -visible spectral analysis.
View Article and Find Full Text PDFSaudi J Biol Sci
March 2021
Adhiyaman Arts and Science College for Women, Uthangarai, Tamil Nadu 635207, India.
The present work aims to synthesize zinc oxide (ZnO) nanoparticles via green approaches using leaf extract of . UV-vis and FT-IR tests confirmed the existence of biomolecules, active materials, and metal oxides. The X-ray diffraction structural study exposes the ZnO nanoparticles formation with hexagonal phase structures.
View Article and Find Full Text PDFJ Mol Model
February 2021
Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
Aromatic heterocyclic compounds are commonly used in pharmaceutical and agrochemical products. The usage has been also extended in the production of corrosion inhibitors and electronic, opto-electronic, and NLO devices. The four regioisomers of the aromatic heterocyclic molecule, tetrakis(4-pyridyl)cyclobutane (tpcb), were optimized, and their chemical, electronic, and biological properties were examined.
View Article and Find Full Text PDFHeliyon
September 2020
Department of Science and Humanities, Sreenivasa Institute of Technology and Management Studies (Autonomous), Chittoor 517127, Andhra Pradesh, India.
Extensive quantum chemical calculation have been carried out to investigate the Fourier Transform Infrared(FT-IR), Fourier Transform Raman(FT-RAMAN) and Nuclear magnetic resonance(NMR), and Ultra Violet-Visible(UV-vis) spectra of 2-(4-Cyanophenylamino) acetic acid. The molecular structure, fundamental vibrational frequencies and intensities of the vibrational bands were interpreted with the aid of optimizations and normal coordinate force field calculations based on density functional theory (DFT) and ab initio HF methods with 6-311++G(d,p) basis set. The theoretical vibrational wavenumbers are compared with the experimental values.
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August 2020
Department of Physics, Queen Mary's College, Chennai 600005, Tamilnadu, India.
The dibenzoxepines derivatives have found a broad application in biological and pharmaceutical fields as new prospective drugs. So, the molecule (3aS,12bS)-5-Chlor-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrol has been characterized by DFT (Density Functional Theory) approach to predict the important properties of it. The minimum energy conformer has been found by PES (Potential Energy Surface) and then the structure is optimized.
View Article and Find Full Text PDFComput Biol Chem
June 2020
Department of Physics, Queen Mary's College, Chennai, 600005, Tamilnadu, India.
The heterocyclic aromatic compounds are primarily used to make pharmaceutical and agrochemicals. In addition, these compounds can be chosen as antioxidants, corrosion inhibitors, electro and opto-electronic devices, polymer material, dye stuff, developers, etc. On the account of this, the heterocyclic aromatic 6-nitro-2,3-dihydro-1,4-benzodioxine (6N3DB) was chosen and the structure is optimized to predict the important properties of it.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
February 2020
Research and Development Centre, Bharathiar University, Coimbatore, 641046, Tamilnadu, India; Department of Physics, Meenakshi College for Women, Chennai, 600024, Tamilnadu, India.
In this present work, a molecule (2E)-3-(biphenyl-4-yl)-1-(4-bromophenyl) prop-2-en-1-one (3BPO) was synthesized and the structure has been characterized by using spectroscopic techniques. The most stable conformational structure of title compound has been calculated using HF-6-31G(d,p) basis set. DFT method were used through B3LYP/6-311++G(d,p) basis set to optimize the structure of the title compound.
View Article and Find Full Text PDFComput Biol Chem
October 2019
Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, 604 407, Tamil Nadu, India. Electronic address:
The vibrational wavenumbers of optimized molecular structure of 1-phenylcyclopentane carboxylic acid (1PCPCA) molecule have been calculated by quantum chemical theory and compared with experimental results. The density functional theory (DFT) approach is followed using the method B3LYP and 6-311++G(d,p) basis set. Using potential energy distribution, all the assignments of the basic vibrational modes were calculated.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
November 2019
Department of Physics, Madras Christian College, East Tambaram, 600059, Tamil Nadu, India.
Chalcone derivative of (2E)‑1‑(3‑bromo‑2‑thienyl)‑3‑(2,5‑dimethoxyphenyl) prop‑2‑en‑1‑one (BTD) molecule has been deliberated for spectroscopic properties experimentally and theoretically. The title compound was characterized by FT-IR, FT-Raman and UV-Vis analyses. The structural activity and vibrational wavenumbers were calculated by a DFT method.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
November 2019
Bioinformatics Infrastructure Facility for BITSnet, Madras Christian College, East Tambaram 600059, Tamil Nadu, India.
Density functional theory is one of the most popular accepted computational quantum mechanical techniques used in the analysis of molecular structure and vibrational spectra. Experimental and theoretical investigations of the molecular structure, electronic and vibrational characteristics of 4-[2-(Dipropylamino) ethyl]-1,3-dihydro-2H-indol-2-one are presented in this work. The title compound was characterized using FT-IR, FT-Raman and UV-Vis spectroscopic techniques.
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