1
|
Redhu S, Singh D, Nehra K, Kumar S, Malik RS, Kumar P, Sindhu J. Computational and optoelectronic investigations of red-emissive europium (III) β-diketonate with n-donor ligands for display applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124307. [PMID: 38653075 DOI: 10.1016/j.saa.2024.124307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024]
Abstract
Europium complexes exhibiting red luminescence were prepared by employing β-diketone as main ligand and 1,10-phenanthroline as an additional ligand. Various methods, including 1H NMR, IR spectroscopy and analysis of optical band gap were employed to examine these complexes. The luminescent photophysical properties were investigated using PL spectroscopy and theoretical calculations were conducted to explore radiative transitions probabilities and Judd-Ofelt (J-O) parameters for transitions of type 5D0 → 7F2, 4. J-O parameters were determined using the JOES computer program and results were in good agreement with the outcomes obtained experimentally. The luminescence analysis results have verified the vibrant, single-color red emission of the prepared complexes. The band gap of ternary europium complexes, determined optically, electronically, and theoretically, falls within the range of 3-4 eV. This similarity indicates that these complexes are potentially suitable as semiconductor materials. The results from absorption, electrochemical and photophysical analyses indicate the potential use of synthesized complexes in lighting and display applications.
Collapse
Affiliation(s)
- Sonia Redhu
- Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Devender Singh
- Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
| | - Kapeesha Nehra
- Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Sumit Kumar
- Department of Chemistry, DCR University of Science and Technology, Murthal 131039, Haryana, India
| | - Rajender Singh Malik
- Department of Chemistry, DCR University of Science and Technology, Murthal 131039, Haryana, India
| | - Parvin Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Jayant Sindhu
- Department of Chemistry, COBSandH, CCS Haryana Agricultural University, Hisar 125004, Haryana, India
| |
Collapse
|
2
|
Dhivya KS, Senthilkumar C, Karthika K, Srinivasan P. Theoretical, structural, and electronic analyses of pyridin-based dyes for dye-sensitized solar cells applications. J Mol Model 2024; 30:206. [PMID: 38869694 DOI: 10.1007/s00894-024-06002-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 06/02/2024] [Indexed: 06/14/2024]
Abstract
CONTEXT The new series of donor-π-acceptor dyes have been designed using pyridine derivatives as a donor group and thienothiophene as a π-spacer group, which were linked via 10 acceptor groups. The highest occupied molecular orbital energies range from - 6.177 to - 5.786 eV, whereas the lowest unoccupied molecular orbital energies range from - 2.181 to - 3.664 eV. A6 dye has smaller energy gap, lower hardness, higher electrophilicity index, and good photovoltaic performance than other sensitizers. The lowest dihedral angle is observed in A1, A2, A6, A7, and A8 which are appropriate for intramolecular charge transfer between the molecules. The A8 has higher light harvesting efficiency, which increases the photovoltaic efficiency of the designed dye. The A6, A7, and A8 dyes spend less time in the excited state, which means they emit photons more efficiently than other dyes. The interaction between donor to π-spacer (red line) parts of the dyes has the bonding interaction (positive), and π-spacer to acceptor (blue line) parts of the dyes have the bonding and antibonding (negative) behaviours. The dyes A5 and A9 have 305.79 and 357.71 times higher β0 values than urea (0.781 × 10-30 esu) molecules. The spectral properties of the A6 dye strongly affect the structural modification. METHODS The density functional theory (DFT) and time-dependent DFT (TD-DFT) approach B3LYP/6-311G (d,p) basic set were used to optimize the designed dyes. All the calculations are performed using Gauss view 6.0 and Gaussian 09 software. The density of state spectrum is plotted using Gauss sum 2.6.
Collapse
Affiliation(s)
- K S Dhivya
- PG and Research Department of Physics, Chikkaiah Naicker College, Erode, Tamil Nadu, 638004, India
| | - C Senthilkumar
- Department of Physics, Government Arts and Science College, Hosur, Tamil Nadu, 635110, India
| | - K Karthika
- PG and Research Department of Physics, Chikkaiah Naicker College, Erode, Tamil Nadu, 638004, India
| | - P Srinivasan
- PG and Research Department of Physics, Chikkaiah Naicker College, Erode, Tamil Nadu, 638004, India.
| |
Collapse
|
3
|
Ahlawat P, Kumari P, Lather V, Rathee B, Kumar R. Europium-based β-hydroxyketone complexes: synthesis, optoelectronic, thermal and computational analyses. Photochem Photobiol Sci 2024; 23:881-899. [PMID: 38581535 DOI: 10.1007/s43630-024-00561-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 03/08/2024] [Indexed: 04/08/2024]
Abstract
Six red-light-emitting Eu(III) complexes having a β-hydroxyketone as ligand and heterocyclic ring containing compounds as ancillary ligands were synthesized to explore their use in displays and optoelectronics. The coordinating behavior of complexes was determined by various techniques such as FTIR (Fourier transform infrared), 1H-NMR (Nuclear magnetic resonance), and 13C-NMR that establishes a bonding of ligand and ancillary ligand with the Eu(III) ion. Morphology and purity were investigated through XRD (X-ray diffraction), SEM (scanning electron microscopy) and EDS (energy-dispersive X-ray spectroscopy) analyses that suggest semicrystalline and pure complex formation. Thermal analysis of complexes by TGA/DTG (thermogravimetric/derivative thermogravimetric) indicates that complexes are stable upto 200 ºC temperature making them suitable for use in display devices. Analysis of the photophysical properties was carried out in both solid and solution states using PL (photoluminescence) studies, color parameters, J-O (Judd-Ofelt) analysis and bandgap. Most emissive transition (5D0 → 7F2) is responsible for the red emission in the complexes. The CIE (Commission International de I'Eclairage) coordinates of complexes also indicate the red emission on UV excitation. The bandgap which was obtained in the range of 2.54-3.02 eV reveals the semiconducting behavior of complexes. Values of J-O parameters and Ω2 in the complexes reflect asymmetric chemical environment around Eu (III) and less covalence and the Ω4 indicates that complexes are less rigid. Bandgap calculated through DFT (density function theory) for complexes is in range of 2.37-2.77 eV, and intensity parameters (J-O), energy transfer rates, and spherical coordinates were determined by LUMPAC software. The computational data are in good harmony with the experimental data. Further biological aspects of complexes were studied using antioxidant and antimicrobial studies.
Collapse
Affiliation(s)
- Pratibha Ahlawat
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Poonam Kumari
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Vaishnavi Lather
- Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun, Uttarakhand, 248001, India
| | - Bhawna Rathee
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Rajesh Kumar
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India.
| |
Collapse
|
4
|
Mushtaq A, Asif R, Humayun WA, Naseer MM. Novel isatin-triazole based thiosemicarbazones as potential anticancer agents: synthesis, DFT and molecular docking studies. RSC Adv 2024; 14:14051-14067. [PMID: 38686286 PMCID: PMC11057040 DOI: 10.1039/d4ra01937g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 04/23/2024] [Indexed: 05/02/2024] Open
Abstract
Thiosemicarbazones of isatin have been found to exhibit versatile bioactivities. In this study, two distinct types of isatin-triazole hybrids 3a and 3b were accessed via copper-catalyzed azide-alkyne cycloaddition reaction (CuAAC), together with their mono and bis-thiosemicarbazone derivatives 4a-h and 5a-h. In addition to the characterization by physical, spectral and analytical data, a DFT study was carried out to obtain the optimized geometries of all thiosemicarbazones. The global reactivity values showed that among the synthesized derivatives, 4c, 4g and 5c having nitro substituents are the most soft compounds, with compound 5c having the highest electronegativity and electrophilicity index values among the synthesized series, thus possessing strong binding ability with biomolecules. Molecular docking studies were performed to explore the inhibitory ability of the selected compounds against the active sites of the anticancer protein of phosphoinositide 3-kinase (PI3K). Among the synthesized derivatives, 4-nitro substituted bisthiosemicarbazone 5c showed the highest binding energy of -10.3 kcal mol-1. These findings demonstrated that compound 5c could be used as a favored anticancer scaffold via the mechanism of inhibition against the PI3K signaling pathways.
Collapse
Affiliation(s)
- Alia Mushtaq
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Rabbia Asif
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Waqar Ahmed Humayun
- Department of Medical Oncology & Radiotherapy, King Edward Medical University Lahore 54000 Pakistan
| | | |
Collapse
|
5
|
Khan MS, Maha N, Riaz M, Yasmin T, Irfan A, Basra MAR. Computational investigation of pyrazinamide drugs and its transition metal complexes using a DFT approach. J Comput Chem 2024; 45:622-632. [PMID: 38063457 DOI: 10.1002/jcc.27273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/24/2023] [Accepted: 11/20/2023] [Indexed: 03/02/2024]
Abstract
Pyrazinamide, an antituberculosis but documented toxic drug, is subjected to computational investigation along with the metal complexes via a DFT approach to predict the structure-activity and structure-toxicity relationship. 6-31G(d,p) basis set was used for Zn, Ni, Mn, Fe, and Co, while the SDD basis set was applied to Cu, Cr, Cd, and Hg. Several reactivity parameters and charge distribution were calculated and the reactivity profile was estimated. The complexes were found to be soft and polarizable which could be responsible for their binding with bacterial targets to inhibit their growth. In contrast, pyrazinamide which is found to be hard among all is susceptible to being toxic. Moreover, the electronegative nature of the complexes can endow them with a better antibacterial effect. Since metal complexes have been found to be less toxic and more biologically interactive by computational methods, they can be employed as potent drugs for the cure of tuberculosis.
Collapse
Affiliation(s)
- Muhammad Sanwal Khan
- Centre for Clinical and Nutritional Chemistry, School of Chemistry, University of The Punjab, Lahore, Pakistan
| | - Nasir Maha
- Centre for Clinical and Nutritional Chemistry, School of Chemistry, University of The Punjab, Lahore, Pakistan
| | - Maira Riaz
- Centre for Clinical and Nutritional Chemistry, School of Chemistry, University of The Punjab, Lahore, Pakistan
| | - Tahira Yasmin
- Centre for Clinical and Nutritional Chemistry, School of Chemistry, University of The Punjab, Lahore, Pakistan
| | - Ahmad Irfan
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia
| | - Muhammad Asim Raza Basra
- Centre for Clinical and Nutritional Chemistry, School of Chemistry, University of The Punjab, Lahore, Pakistan
| |
Collapse
|
6
|
Muhammad S, Zahir N, Bibi S, Alshahrani MY, Shafiq-urRehman, Chaudhry AR, Sarwar F, Tousif MI. Computational prediction for designing novel ketonic derivatives as potential inhibitors for breast cancer: A trade-off between drug likeness and inhibition potency. Comput Biol Chem 2024; 109:108020. [PMID: 38286082 DOI: 10.1016/j.compbiolchem.2024.108020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/31/2024]
Abstract
Unlike simple molecular screening, a combined hybrid computational methodology has been applied which includes quantum chemical methods, molecular docking, and molecular dynamics simulations to design some novel ketonic derivatives. The current study contains the derivatives of an experimental ligand which are designed as a trade-off between drug likeness and inhibition strength. We investigate the interaction of various newly designed ketonic compounds with the breast cancer receptor known as the Estrogen Receptor Alpha (ERα). The molecular structures of all newly designed ligands were studied quantum chemically in terms of their fully optimized structures, 3-D molecular orbital distributions, global chemical descriptors, molecular electrostatic potentials and energies of frontier molecular orbitals (FMOs). All ligands under study show good binding affinities with the ERα protein. The ligands CMR2 and CMR4 exhibit improved molecular docking interactions. The intermolecular interactions indicate that CMR4 demonstrates better hydrophobic and hydrogen bonding interactions with protein (ERα). Furthermore, molecular dynamics simulations were conducted on ligands and reference drugs interacting with the ERα protein over a time span of 120 nanoseconds. The molecular dynamics results are interpreted in terms of ligand-protein stability and flexible behaviour based on their respective values of RMSD, RMSF, H-bonds, the radius of gyration, and SASA graphs. To analyse ligand-protein interactions throughout the entire 120 ns trajectory, a more advanced MM/PBSA method is utilized, where six selected ligands (CMR1, CMR2, CMR3, CMR4, CMR5 and CMR9) illustrate promising results for inhibition of the ERα receptor as assessed through MM/BBSA analysis. The CMR9 has the highest MM/BBSA binding free energy (-14.46 kcal/mol). The ADMET analysis reveals that CMR4 has maximum intestinal absorption (6.68) and clearance rate (0.1). All the compounds are non-toxic and safe to use. These findings indicate the potential of involving different computational techniques to design the ligand structures and to study the ligand-protein interactions for better understanding and achieving more potent synthetic inhibitors for breast cancer.
Collapse
Affiliation(s)
- Shabbir Muhammad
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
| | - Nimra Zahir
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Shamsa Bibi
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan.
| | - Mohammad Y Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, P.O. Box 61413, Abha 9088, Saudi Arabia
| | - Shafiq-urRehman
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Aijaz Rasool Chaudhry
- Department of Physics, College of Science, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia
| | - Fatima Sarwar
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Muhammad Imran Tousif
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore 54770, Pakistan
| |
Collapse
|
7
|
Kumar M, Lather V, Nandal P, Ahlawat P, Kumari P, Khatkar A, Khatkar SP, Taxak VB, Kumar R. New Highly Luminescent Red Emitting Complexes: Synthesis, Characterization, Judd-Ofelt Intensity Parameters and Pharmacological Investigations. J Fluoresc 2023:10.1007/s10895-023-03506-7. [PMID: 38015295 DOI: 10.1007/s10895-023-03506-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 11/06/2023] [Indexed: 11/29/2023]
Abstract
A series of new red luminescent Eu(III) complexes were integrated by β-hydroxyketone ligand 2-(4-chlorophenyl)-1-(2-hydroxy-4,6-dimethoxyphenyl)ethan-1-one (CHDME) as main ligand and 1,10-phenanthroline (phen) or 5,6-dimethyl-1,10-phenanthroline (dmphen) or bathophenanthroline (bathophen) as ancillary ligand. The complexes were synthesised by solution precipitation method. The CHDME is taken as ligand and its analogous Eu(III) complexes were characterized by elemental analysis, FT-IR and 1H-NMR. The photoluminescent properties were also examined in solid state. The Judd-Ofelt intensity parameters (Ω2 and Ω4) and luminescence quantum efficiency (η) of Eu(III) complexes were additionally figured out as per luminescence spectra and decay cure. UV analysis and optical band was also calculated. Computational analysis were carried out and optical band and Judd-Ofelt intensity parameters were determined. Furthermore, the pharmacological activities such as antimicrobial and antioxidant activity of ligand CHDME and its analogous Europium complexes were also examined. The methods used were tube dilution method for calculating antimicrobial activity and DPPH free radical method for antioxidant activity.
Collapse
Affiliation(s)
- Manoj Kumar
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, , 124001, India
| | - Vaishnavi Lather
- Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun, Uttarakhand, 248001, India
| | - Poonam Nandal
- Deenbandhu Chhotu Ram University of Science and Technlogy, Murthal, 131039, India
| | - Pratibha Ahlawat
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, , 124001, India
| | - Poonam Kumari
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, , 124001, India
| | - Aarti Khatkar
- Deenbandhu Chhotu Ram University of Science and Technlogy, Murthal, 131039, India
| | - S P Khatkar
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - V B Taxak
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Rajesh Kumar
- University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, , 124001, India.
| |
Collapse
|
8
|
H. El-Demerdash S, F. Gad S, M. El-Mehasseb I, E. El-Kelany K. Isosterism in pyrrole via azaboroles substitution, a theoretical investigation for electronic structural, stability and aromaticity. Heliyon 2023; 9:e20542. [PMID: 37810871 PMCID: PMC10551570 DOI: 10.1016/j.heliyon.2023.e20542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/26/2023] [Accepted: 09/28/2023] [Indexed: 10/10/2023] Open
Abstract
This work uses ab-initio CBS-QB3 and density functional theory (B3LYP) to analyze the structure, stability, and aromaticity of all isosteric nitrogen-boron pyrroles. The mono-NB unit substituted group of the isosteric NB pyrrole has four isosteres, whereas the multi-NB unit substituted group has two isosteres. These two groups make up all isosteric NB pyrrole. For structural, energetic, magnetic, and electron delocalization criteria, the results highlight the predominance of the PN3B2 isostere and its greater stability over other conformers. In addition, the global reactivity indices, ESP, HOMO-LUMO, and NBO charges have all been estimated to forecast the active side's electron donation and acceptance. These isosteres are categorized as weak electrophiles and marginal nucleophiles. NB-isosteres have poorer stability, HOMO-LUMO gap, and aromaticity than the parent (pyrrole). In general, NB compounds with more ring sharing are less aromatic than NB molecules with less ring sharing. The current study is anticipated to help in understanding of the chemistry of NB substituted molecules and their experimental identification and characterization.
Collapse
Affiliation(s)
| | - Shaimaa F. Gad
- Chemistry Department, Faculty of Science, Kafrelsheikh University, 33516, Kafr el-Sheikh, Egypt
| | - Ibrahim M. El-Mehasseb
- Chemistry Department, Faculty of Science, Kafrelsheikh University, 33516, Kafr el-Sheikh, Egypt
| | - Khaled E. El-Kelany
- Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, 33516, Kafr el-skiekh, Egypt
| |
Collapse
|
9
|
Dowerah D, V. N. Uppuladinne M, Sarma PJ, Biswakarma N, Sonavane UB, Joshi RR, Ray SK, Namsa ND, Deka RC. Design of LNA Analogues Using a Combined Density Functional Theory and Molecular Dynamics Approach for RNA Therapeutics. ACS OMEGA 2023; 8:22382-22405. [PMID: 37396274 PMCID: PMC10308574 DOI: 10.1021/acsomega.2c07860] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 02/17/2023] [Indexed: 07/04/2023]
Abstract
Antisense therapeutics treat a wide spectrum of diseases, many of which cannot be addressed with the current drug technologies. In the quest to design better antisense oligonucleotide drugs, we propose five novel LNA analogues (A1-A5) for modifying antisense oligonucleotides and establishing each with the five standard nucleic acids: adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U). Monomer nucleotides of these modifications were considered for a detailed Density Functional Theory (DFT)-based quantum chemical analysis to determine their molecular-level structural and electronic properties. A detailed MD simulation study was done on a 14-mer ASO (5'-CTTAGCACTGGCCT-3') containing these modifications targeting PTEN mRNA. Results from both molecular- and oligomer-level analysis clearly depicted LNA-level stability of the modifications, the ASO/RNA duplexes maintaining stable Watson-Crick base pairing preferring RNA-mimicking A-form duplexes. Notably, monomer MO isosurfaces for both purines and pyrimidines were majorly distributed on the nucleobase region in modifications A1 and A2 and in the bridging unit in modifications A3, A4, and A5, suggesting that A3/RNA, A4/RNA, and A5/RNA duplexes interact more with the RNase H and solvent environment. Accordingly, solvation of A3/RNA, A4/RNA, and A5/RNA duplexes was higher compared to that of LNA/RNA, A1/RNA, and A2/RNA duplexes. This study has resulted in a successful archetype for creating advantageous nucleic acid modifications tailored for particular needs, fulfilling a useful purpose of designing novel antisense modifications, which may overcome the drawbacks and improve the pharmacokinetics of existing LNA antisense modifications.
Collapse
Affiliation(s)
- Dikshita Dowerah
- CMML—Catalysis
and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784 028, India
| | - Mallikarjunachari V. N. Uppuladinne
- HPC—Medical
& Bioinformatics Applications Group, Centre for Development of Advanced Computing (C-DAC), Panchavati, Pashan, Pune 411008, India
| | - Plaban J. Sarma
- CMML—Catalysis
and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784 028, India
- Department
of Chemistry, Gargaon College, Sivasagar, Assam 785685, India
| | - Nishant Biswakarma
- CMML—Catalysis
and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784 028, India
| | - Uddhavesh B. Sonavane
- HPC—Medical
& Bioinformatics Applications Group, Centre for Development of Advanced Computing (C-DAC), Panchavati, Pashan, Pune 411008, India
| | - Rajendra R. Joshi
- HPC—Medical
& Bioinformatics Applications Group, Centre for Development of Advanced Computing (C-DAC), Panchavati, Pashan, Pune 411008, India
| | - Suvendra K. Ray
- Department
of Molecular Biology and Biotechnology, Tezpur University, Napaam, Sonitpur, Assam 784028, India
- Center
for Multidisciplinary Research, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| | - Nima D. Namsa
- Department
of Molecular Biology and Biotechnology, Tezpur University, Napaam, Sonitpur, Assam 784028, India
- Center
for Multidisciplinary Research, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| | - Ramesh Ch. Deka
- CMML—Catalysis
and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur, Assam 784 028, India
- Center
for Multidisciplinary Research, Tezpur University, Napaam, Sonitpur, Assam 784028, India
| |
Collapse
|
10
|
Chérif I, Raissi H, Abiedh K, Gassoumi B, Caccamo MT, Magazu S, Said AH, Hassen F, Boubaker T, Ayachi S. Exploration of intramolecular charge transfer in para-substituted nitrobenzofurazan: Experimental and theoretical analyses. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 301:122939. [PMID: 37285745 DOI: 10.1016/j.saa.2023.122939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/09/2023]
Abstract
The present work aims at exploring the high electrophilic character of 4-chloro-7-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) toward the morpholine group by an SNAr reaction in acetonitrile or water (thereafter referred to as NBD-Morph). The electron-donating ability of the morpholine causes intra-molecular charge transfer (ICT). In this report, we present a comprehensive study on the optical characteristics using UV-Vis, photoluminescence (cw-PL) and its time-resolved (TR-PL) to determine the properties of the emissive intramolecular charge transfer (ICT) in the NBD-Morph donor-acceptor system. An exhaustive theoretical investigation utilizing the density functional theory (DFT) and its extension TD-DFT methods is an essential complement of experiments to rationalize and understand the molecular structure and related properties. The findings from QTAIM, ELF, and RDG analyses establish that the bonding between morpholine and NBD moieties is of the electrostatic or hydrogen bond type. In addition, the Hirshfeld surfaces have been established to explore the types of interactions. Further, the non-linear optical (NLO) responses of the compound have been examined. The structure-property relationships obtained through the combined experimental and theoretical offer valuable insights for designing efficient NLO material.
Collapse
Affiliation(s)
- Imen Chérif
- Laboratory of Physico-Chemistry of Materials (LR01ES19), Faculty of Sciences, University of Monastir, Avenue of the environment, 5019 Monastir, Tunisia
| | - Hanen Raissi
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11ES39), Faculté des Sciences, Université de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia
| | - Khouloud Abiedh
- Laboratoire de Micro-Optoélectronique et Nanostructures (LR99/ES29), Faculté des Sciences, Université de Monastir, Monastir, Tunisia
| | - Bouzid Gassoumi
- Laboratoire Interfaces et Matériaux Avancés (LIMA), Faculté des Sciences, Université de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia
| | - Maria Teresa Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra Università di Messina Viale Ferdinando Stagno D', Alcontres n°31, S. Agata, 98166 Messina Italy
| | - Salvatore Magazu
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra Università di Messina Viale Ferdinando Stagno D', Alcontres n°31, S. Agata, 98166 Messina Italy
| | - Ayoub Haj Said
- Laboratoire Interfaces et Matériaux Avancés (LIMA), Faculté des Sciences, Université de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia; Centre de Recherche en Microélectronique et Nanotechnologie, Technopôle de Sousse, BP 334, Sahloul, 4054 Sousse, Tunisia
| | - Fredj Hassen
- Laboratoire de Micro-Optoélectronique et Nanostructures (LR99/ES29), Faculté des Sciences, Université de Monastir, Monastir, Tunisia
| | - Taoufik Boubaker
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11ES39), Faculté des Sciences, Université de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia
| | - Sahbi Ayachi
- Laboratory of Physico-Chemistry of Materials (LR01ES19), Faculty of Sciences, University of Monastir, Avenue of the environment, 5019 Monastir, Tunisia.
| |
Collapse
|
11
|
Alharthy RD, Ahmed N, Mubarak S, Yaqub M, Khalid M, Shafiq I, Asghar MA, Braga AA, Shafiq Z. Design, Synthesis, and Density Functional Theory Studies of Indole Hydrazones as Colorimetric "Naked Eye" Sensors for F Ions. ACS OMEGA 2023; 8:14131-14143. [PMID: 37091400 PMCID: PMC10116618 DOI: 10.1021/acsomega.3c00821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/29/2023] [Indexed: 05/03/2023]
Abstract
A new series of sensors SM-1 to SM-3 was designed and synthesized using indole carboxaldehydes (2a-2c) and 2,4-dinitrophenyl hydrazine. Accompanied by the synthesis, density functional theory investigation was also accomplished at the M06-2X/6-311G+(d,p) functional. A reduction in band gap (ΔE = 4.702-4.230 eV) along with a bathochromic shift (λmax = 433.223-471.584 nm) was seen in deprotonated chromophores than their neutral sensors. Further, significant charge transference from indole toward dinitrophenyl hydrazine was also examined. Global reactivity parameters also expressed the greater stability of sensors than that of their deprotonated form. SM-3 displayed high selectivity toward F ions as compared to SM-1 and SM-2, which respond to both F- and CN- ions. The electronic absorption spectrum was recorded in CH3CN. The sensor SM-3 showed high selectivity toward F- ions with a low detection limit (8.69 × 10-8), and the binding constant for SM-3 was determined as 7.7 × 105. The sensor displayed naked eye views as the color of solution changed from mustard to purple with a red shift of 96 nm. The mechanism suggests deprotonation from the NH group, which was confirmed by 1H NMR. The sensor is found to be useful for detection of F- ions in the real sample and for analytical application (test strip).
Collapse
Affiliation(s)
- Rima D. Alharthy
- Department
of Chemistry, Science & Arts College, Rabigh Branch, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| | - Nadeem Ahmed
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60800, Pakistan
| | - Saman Mubarak
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60800, Pakistan
| | - Muhammad Yaqub
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60800, Pakistan
| | - Muhammad Khalid
- Institute
of Chemistry, Khwaja Fareed University of
Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
- Centre
for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
- ;
| | - Iqra Shafiq
- Institute
of Chemistry, Khwaja Fareed University of
Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
- Centre
for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Muhammad Adnan Asghar
- Department
of Chemistry, Division of Science and Technology, University of Education, Lahore 89002, Pakistan
| | - Ataualpa Albert
Carmo Braga
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo 05508-000, Brazil
| | - Zahid Shafiq
- Institute
of Chemical Sciences, Bahauddin Zakariya
University, Multan 60800, Pakistan
| |
Collapse
|
12
|
Hooda A, Singh D, Dalal A, Nehra K, Kumar S, Singh Malik R, Kumar R, Kumar P. Preparation, Spectral and Judd Ofelt Analyses of Luminous Octa-coordinated Europium (III) Complexes. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
|
13
|
Synthesis and photo-physics of luminescent Sm(III) complexes derived from β-hydroxyketone and heterocyclic ancillary ligands. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
|
14
|
Kumar S, Choudhary M. Structural and theoretical investigations, Hirshfeld surface analysis and anti-SARS CoV-2 of nickel (II) coordination complex. J Biomol Struct Dyn 2023; 41:402-422. [PMID: 34842499 DOI: 10.1080/07391102.2021.2006089] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A nickel(II) Schiff base complex, [Ni(L)(DMF)](1), was synthesized by treating NiCl2.6H2O with an ONS-donor Schiff base ligand(H2L) derived from the condensation 3,5-Dichlorosalicylaldehyde and 4,4-Dimethyl-3-thiosemicarbazide in DMF. The geometry around the center metal ion in [Ni(L)(DMF)](1) was square planar as revealed by the data collection from diffraction studies. DFT calculations were performed on the complex to get a structure-property relationship. Hirshfeld surface analysis was also carried out in the crystal structure of nickel (II) Schiff base complex. Additionally, inspiring from recent developments to find a potential inhibitor for SARS-CoV-2 virus, we have also performed molecular docking study of [Ni(L)(DMF)](1) to see if our novel complex show affinity for main protease (Mpro) of SARS-CoV-2 Mpro (PDB ID: 6LZE). Interestingly, the results are found quite encouraging where the binding affinity and inhibition constant was found to be -6.6 kcal/mol and 2.358 µM, respectively, for the best docked confirmation of complex [Ni(L)(DMF)](1) with Mpro protein. This binding affinity is reasonably well as compared to recently known antiviral drugs. For instance, the binding affinity of complex [Ni(L)(DMF)](1) is found to be better than that of recently docking results of anti-SARS-CoV-2 drugs like chloroquine (-6.293 kcal/mol), hydroxychloroquine (-5.573 kcal/mol) and remdesivir (-6.352 kcal/mol) when targeted to the active-site of SARS-CoV-2 Mpro. Besides this, molecular docking against G25K GTP-nucleotide binding protein (PDB ID: 1A4R) was also studied. We believe that current results can intrigue not only for the biomedical community but also for the materials chemists who are engaged to explore the application coordination complexes. Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Sunil Kumar
- Department of Chemistry, National Institute of Technology Patna, Patna, Bihar, India
| | - Mukesh Choudhary
- Department of Chemistry, National Institute of Technology Patna, Patna, Bihar, India
| |
Collapse
|
15
|
Sharma SJ, Sekar N. Charge Transfer as Bridging Correlator for DSSC Efficiency and NLO Property. ChemistrySelect 2022. [DOI: 10.1002/slct.202203262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Suryapratap J. Sharma
- Dyestuff Technology Department (Currently named Department of Specialty Chemicals Technology) Institute of Chemical Technology Nathalal Parekh Marg, Matunga Mumbai 400019 Maharashtra India
| | - Nagaiyan Sekar
- Dyestuff Technology Department (Currently named Department of Specialty Chemicals Technology) Institute of Chemical Technology Nathalal Parekh Marg, Matunga Mumbai 400019 Maharashtra India
| |
Collapse
|
16
|
M JP, Samson Y, Dhas DA, Joe IH. Exploration of Non Covalent Interactions, Structural, Vibrational, Chemical Reactivity and NLO Properties of 1, 2-Diphenyl-2-Methoxyethanone Oxime: A Theoretical Approach. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2135547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Jini Pramila M
- Manonmanium Sundaranar University, Tirunelveli, India
- Department of Physics and Research Centre, Nesamony Memorial Christian College, Marthandam, India
| | - Y. Samson
- Department of Physics, Annai Velankanni College, Tholayavattam, India
| | - D. Arul Dhas
- Department of Physics and Research Centre, Nesamony Memorial Christian College, Marthandam, India
| | - I. Hubert Joe
- Department of Physics, Centre for Molecular and Biophysics Research, Mar Ivanios College, Thiruvananthapuram, India
| |
Collapse
|
17
|
Chakraborty J. An account of noncovalent interactions in homoleptic palladium(II) and platinum(II) complexes within the DFT framework: A correlation between geometries, energy components of symmetry-adapted perturbation theory and NCI descriptors. Heliyon 2022; 8:e11408. [DOI: 10.1016/j.heliyon.2022.e11408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/26/2022] [Accepted: 10/31/2022] [Indexed: 11/10/2022] Open
|
18
|
kerkour R, Chafai N, Moumeni O, Chafaa S. Novel α-aminophosphonate derivates synthesis, theoretical calculation, Molecular docking, and in silico prediction of potential inhibition of SARS-CoV-2. J Mol Struct 2022; 1272:134196. [PMID: 36193287 PMCID: PMC9519172 DOI: 10.1016/j.molstruc.2022.134196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 09/07/2022] [Accepted: 09/21/2022] [Indexed: 01/18/2023]
Abstract
Using the Density Functional Theory approach and in silico docking, the current study analyzes the inhibitory role of a novel α-aminophosphonate derivative against SARS-CoV-2 major protease (Mpro) and RNA dependent RNA polymerase (RdRp) of SARS-CoV-2. FT-IR, UV–Vis, and NMR (1H, 13C, 31P) approaches were used to produce and confirm the novel α-aminophosphonate derivative. The quantum chemical parameters were detremined, and the reactivity of the synthesized molecule was discussed using DFT at the B3LYP/6-31G(d,p) level. In addition, the inhibitory function of the investigated derivative for SARS-CoV-2 major protease (Mpro) and RNA dependent RNA polymerase (RdRp) was estimated using in silico docking. These discoveries could pave the way for novel SARS-CoV-2 therapies to develop and be tested.
Collapse
|
19
|
Şahin N, Çelebi MS, Ayvaz MÇ, Üstün E. Antioxidant Activity, Enzyme Inhibition, Electrochemical and Theoretical Evaluation of Novel PEPPSI Type N-Heterocyclic Carbene Complexes. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
20
|
Nehra K, Dalal A, Hooda A, Singh D, Kumar S, Singh Malik R. Heteroleptic luminous ternary europium Complexes: Synthesis, electrochemical and photophysical investigation. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139675] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
21
|
Bhagwan S, Gupta I, Tanwar V, Nishal V, Saini RK, Singh D. Structural, spectroscopic and optical analysis of heterocyclic ligands (N, O) based Mg(II) complexes for advance photonic applications. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
22
|
Bouzaheur A, Bouchoucha A, Si Larbi K, Zaater S. Experimental and DFT studies of a novel Schiff base sulfonamide derivative ligand and its palladium (II) and platinum (IV) complexes: antimicrobial activity, cytotoxicity, and molecular docking study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
23
|
Indium(III) and organotin(IV) 2-(methoxycarbonyl)benzenethiolates: Synthesis, structure and properties. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
24
|
Antioxidant Properties of Curcumin Analogues to Inhibit Thermal Degradation of Low-Density Polyethylene: Experimental and DFT Study. J CHEM-NY 2022. [DOI: 10.1155/2022/5391296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Curcumin can be isolated from plants (Curcuma longa) and it belongs to the ginger family. It exhibits many useful properties and acts as an antioxidant. The aim of the current study was to prepare eight curcumin analogues and investigate their antioxidant activities to inhibit the thermal degradation of low-density polyethylene (LDPE). The carbonyl index (CI) was measured to test the effectiveness of the curcumin analogues. Various doses (0.5, 1, 2, 4, and 6% wt/wt) of a mixture containing LDPE and curcumin analogues were prepared, and the CI was measured. The eight curcumin analogues were found to have good to excellent antioxidant activity against the degradation of LDPE. It was clear that the curcumin analogue derived from vanillin and acetone has the highest antioxidant activity. The density functional theory study was conducted for the eight curcumin analogues to test their reactivity and stability. Again, the global reactivity descriptors analysis showed that compound derived from vanillin and acetone was the most reactive compound to inhibit thermal degradation of LDPE.
Collapse
|
25
|
Dalal A, Nehra K, Hooda A, Singh S, Bhagwan S, Singh D, Kumar S. 2,2′-Bipyridine based fluorinated β-Diketonate Eu(III) complexes as red emitter for display applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109399] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
26
|
Dalal A, Nehra K, Hooda A, Singh D, Kumar S, Malik RS. Red Emissive Ternary Europium Complexes: Synthesis, Optical and Luminescent Characteristics. LUMINESCENCE 2022; 37:1309-1320. [DOI: 10.1002/bio.4297] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/21/2022] [Accepted: 05/26/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Anuj Dalal
- Department of Chemistry Maharshi Dayanand University Rohtak India
| | - Kapeesha Nehra
- Department of Chemistry Maharshi Dayanand University Rohtak India
| | - Anjli Hooda
- Department of Chemistry Maharshi Dayanand University Rohtak India
| | - Devender Singh
- Department of Chemistry Maharshi Dayanand University Rohtak India
| | - Sumit Kumar
- Department of Chemistry DCR University of Science & Technology Murthal Haryana India
| | - Rajender Singh Malik
- Department of Chemistry DCR University of Science & Technology Murthal Haryana India
| |
Collapse
|
27
|
Murugavel S, Vasudevan P, Chandrasekaran R, Archana V, Ponnuswany A. Synthesis, crystal structure elucidation,
DFT
analysis, drug‐likeness and
ADMET
evaluation and molecular docking studies of triazole derivatives: Binary inhibition of spike protein and
ACE2
receptor protein of
COVID
‐19. J CHIN CHEM SOC-TAIP 2022; 69:884-900. [PMID: 35941959 PMCID: PMC9347919 DOI: 10.1002/jccs.202200140] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/13/2022] [Accepted: 05/01/2022] [Indexed: 12/13/2022]
Abstract
The recent incidence of terrible acute respiratory syndrome coronavirus 2 (SARS CoV‐2) has presently experienced some noteworthy mutations since its discovery in 2019 in Wuhan, China. The present research work focuses on the synthesis of three triazole derivatives (BMTPP, BMTTP, and BMTIP) and their inhibition activities against SARS‐Cov‐2 spike and ACE2 receptor proteins. The crystal structure for BMTTP was determined by the SCXRD method and optimized geometrical parameters for the three triazole derivatives were obtained by DFT calculations. HOMO‐LUMO, Global reactive descriptors [GRD], and Molecular electrostatic potential (MEP) investigations exposed that all three compounds have biological properties. The drug‐likeness ability of the synthesized compounds was examined using Molinspiration and a pre‐ADMET online Server. Further, to explore the binding nature of three synthesized compounds with SARS‐Cov‐2 spike proteins/ACE2 receptor molecular docking studies were executed. The outcomes we obtained from molecular docking simulation studies suggest that the synthesized triazole derivatives may be well utilized as curing medicines against COVID‐19. Ultimately, animal tests and precise clinical tests are required to prove the potent nature of these compounds against COVID‐19. Finally, the present outcomes must be proved to utilize in‐vitro and in‐vivo antiviral methods.
Collapse
Affiliation(s)
- Saminathan Murugavel
- Department of Physics Thanthai Periyar Government Institute of Technology Vellore Tamil Nadu India
| | - Perumal Vasudevan
- Department of Physics Thanthai Periyar Government Institute of Technology Vellore Tamil Nadu India
| | - RaviKumar Chandrasekaran
- Department of Physics Thanthai Periyar EVR Government Polytechnic College Vellore Tamil Nadu India
| | - Vellingiri Archana
- Department of Chemistry School of Physical Sciences and Computational Sciences, Avinashilingam Institute for Home Science and Higher Education for Women Coimbatore Tamil Nadu India
| | - Alagusundaram Ponnuswany
- Department of Organic chemistry School of chemistry, Madurai Kamaraj University Madurai Tamil Nadu India
| |
Collapse
|
28
|
Hooda A, Nehra K, Dalal A, Bhagwan S, Gupta I, Singh D, Kumar S. Luminescent Features of Ternary Europium Complexes: Photophysical and Optoelectronic Evaluation. J Fluoresc 2022; 32:1529-1541. [DOI: 10.1007/s10895-022-02956-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 04/20/2022] [Indexed: 01/31/2023]
|
29
|
Red luminous Eu(III) complexes: Preparation, spectral, optical and theoretical evaluation. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121007] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
30
|
Influence of Coordinating Environment on Photophysical Properties of UV Excited Sharp Red Emitting Material: Judd Ofelt Analysis. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113999] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
31
|
Hooda A, Dalal A, Nehra K, Singh S, Kumar S, Singh D. Red-emitting β-diketonate Eu(III) Complexes With Substituted 1,10-phenanthroline Derivatives: Optoelectronic and Spectroscopic Analysis. J Fluoresc 2022; 32:1413-1424. [PMID: 35438372 DOI: 10.1007/s10895-022-02951-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/11/2022] [Indexed: 11/30/2022]
Abstract
A series of europium diketonate complexes with 1-phenyl-1,3-butanedione (PBD) and 1,10-phenanthroline derivatives were synthesized and explored spectroscopically. Photophysical characteristics of synthesized complexes have been investigated experimentally as well as theoretically. Photoluminescence emission spectra of complexes do not contain any peak of ligand revealing efficient transferal of energy from ligand to Eu3+ ion. Presence of peak at 611 nm corresponding to 5D0 → 7F2 transition is responsible for red emanation of ternary europium complexes. Photophysical parameters viz., Judd-Ofelt, quantum efficiency, radiative and non radiative decay rates were also estimated theoretically from LUMPAC software. Geometry optimization of complexes was done via Avogadro software. All synthesized trivalent complexes exhibit red emission which was further sustained by the position of chromaticity coordinates in CIE triangle. These red emanating materials could be utilized in designing electroluminescent display devices.
Collapse
Affiliation(s)
- Anjli Hooda
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Anuj Dalal
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Kapeesha Nehra
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Sitender Singh
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Sumit Kumar
- Department of Chemistry, DCR University of Science & Technology, Murthal, Haryana, 131039, India
| | - Devender Singh
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India.
| |
Collapse
|
32
|
Türker D, Üstün E, Günal S, Yıldız H, D Düşünceli S, Özdemir İ. Cyanopropyl functionalized benzimidazolium salts and their silver N-heterocyclic carbene complexes: Synthesis, antimicrobial activity, and theoretical analysis. Arch Pharm (Weinheim) 2022; 355:e2200041. [PMID: 35352839 DOI: 10.1002/ardp.202200041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 11/08/2022]
Abstract
The reaction of N-substituted benzimidazole with 4-bromobutyronitrile gives the corresponding benzimidazolium salts as N-heterocyclic carbene (NHC) precursors. Silver(I) carbene complexes are synthesized by the reaction of the corresponding benzimidazolium salts with Ag2 O in dichloromethane. These new NHC precursors and Ag-NHC complexes were characterized by spectroscopy techniques and also screened for their antibacterial activities against the standard bacterial strains Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella pneumoniae, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, and Enterococcus faecalis, and the standard fungal strains Candida albicans and Candida glabrata, and promising results were achieved. The compounds were also analyzed by density functional theory (DFT)/time-dependent DFT and docking methods.
Collapse
Affiliation(s)
- Dilek Türker
- Inorganic Chemistry, Catalysis Research and Application Center, İnönü University, Malatya, Turkey
| | - Elvan Üstün
- Inorganic Chemistry, Department of Chemistry, Faculty of Science and Art, Ordu University, Ordu, Turkey
| | - Selami Günal
- Pharmaceutical Chemistry, Department of Microbiology, Faculty of Medicine, İnonu University, Malatya, Turkey
| | - Hatice Yıldız
- Pharmaceutical Chemistry, Department of Microbiology, Faculty of Medicine, İnonu University, Malatya, Turkey
| | - Serpil D Düşünceli
- Inorganic Chemistry, Catalysis Research and Application Center, İnönü University, Malatya, Turkey.,Inorganic Chemistry, Department of Chemistry, Faculty of Science and Arts, İnönü University, Malatya, Turkey.,Drug Application and Research Center, İnönü University, Malatya, Turkey
| | - İsmail Özdemir
- Inorganic Chemistry, Catalysis Research and Application Center, İnönü University, Malatya, Turkey.,Inorganic Chemistry, Department of Chemistry, Faculty of Science and Arts, İnönü University, Malatya, Turkey.,Drug Application and Research Center, İnönü University, Malatya, Turkey
| |
Collapse
|
33
|
A DFT analysis of electronic, reactivity, and NLO responses of a reactive orange dye: the role of Hartree-Fock exchange corrections. J Mol Model 2022; 28:85. [PMID: 35377023 DOI: 10.1007/s00894-022-05035-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 01/19/2022] [Indexed: 10/18/2022]
Abstract
An experimental and theoretical study based on DFT/TD-DFT approximations is presented to understand the nature of electronic excitations, reactivity, and nonlinear optical (NLO) properties of reactive orange 16 dye (RO16), an azo chromophore widely used in textile and pharmacological industries. The results show that the solvent has a considerable influence on the electronic properties of the material. According to experimental results, the absorption spectrum is formed by four intense transitions, which have been identified as [Formula: see text] states using TD-DFT calculations. However, the TD-DFT results reveal a weak [Formula: see text] in the low-lying spectral region. Continuum models of solvation indicate that these states suffer from bathochromic (ca. 15 nm) and hypsochromic shifts (ca. 4 nm), respectively. However, the expected blue shift for the absorption [Formula: see text] is only described using long-range or dispersion-corrected DFT methods. RO16 is classified as a strong electrophilic system, with electrophilicity ω > 1.5 eV. Concerning the nucleophilicity parameter (N), from vacuum to solvent, the environment is active and changes the nucleophilic status from strong to moderate nucleophile (2.0 ≤ N ≤ 3.0 eV). The results also suggest that all electrical constants are strongly dependent on long-range and Hartree-Fock exchange contributions, and the absence of these interactions gives results far from reality. In particular, the results for the NLO response show that the chromophore presents a potential application in this field with a low refractive index and first hyperpolarizability ca. 214 times bigger than the value usually reported for urea (β = 0.34 × 10- 30 esu), which is a standard NLO material. Concerning the solvent effects, the results indicate that the polarizability increases [Formula: see text] esu from gas to solvent while the first hyperpolarizability is calculated as [Formula: see text] esu, ca. 180%, regarding the vacuum. The results suggest RO16 is a potential compound in NLO applications. Graphical Abstract The frontier molecular orbitals, and the inverse relation between the energy-gap (Egap) and the first hyperpolarizability (β).
Collapse
|
34
|
Bouamrane OL, Hellal A, Hachama K, Touafri L, Haddadi I, Layaida H, Kirouani I, Hassani A, Mersellem M, Madani A, Bensouici C. Effect of the bifunctionalization of aminomethylphosphonic acid on the structural, electronic, vibrational, thermodynamic and antioxidant activity: Microwave-assisted synthesis, Density Functional Theory studies and DPPH radical scavenging activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131714] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
35
|
Hiba K, Shaibuna M, Prathapan S, Sreekumar K. Novel Carboxylic Acid Functionalized Dendronized Polymer: A Homogeneous, Reusable Metal Free Acid Catalyst for the Synthesis of Symmetric and Unsymmetric Xanthene Derivatives. ChemistrySelect 2021. [DOI: 10.1002/slct.202103682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kottayil Hiba
- Department of Applied Chemistry Cochin University of Science and Technology Kochi 682022 India
| | - Machingal Shaibuna
- Department of Applied Chemistry Cochin University of Science and Technology Kochi 682022 India
| | - Sreedharan Prathapan
- Department of Applied Chemistry Cochin University of Science and Technology Kochi 682022 India
| | - Krishnapillai Sreekumar
- Department of Applied Chemistry Cochin University of Science and Technology Kochi 682022 India
| |
Collapse
|
36
|
Ahsin A, Shah AB, Ayub K. Germanium-based superatom clusters as excess electron compounds with significant static and dynamic NLO response; a DFT study. RSC Adv 2021; 12:365-377. [PMID: 35424493 PMCID: PMC8978613 DOI: 10.1039/d1ra08192f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 12/04/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, the geometric, electronic, and nonlinear optical properties of excess electron zintl clusters Ge5AM3, Ge9AM5, and Ge10AM3 (AM = Li, Na, and K) are investigated. The clusters under consideration demonstrate considerable electronic stability as well as superalkali characteristics. The NBO charge is transferred from the alkali metal to the Ge-atoms. The FMO analysis shows fabulous conductive properties with a significant reduction in SOMO-LUMO gaps (0.79-4.04 eV) as compared with undoped systems. The designed clusters are completely transparent in the deep UV-region and show absorption in the visible and near-IR region. Being excess electron compounds these clusters exhibit remarkable hyperpolarizability response up to 8.99 × 10-26 esu, where a static second hyperpolarizability (γ o) value of up to 2.15 × 10-30 esu was recorded for Ge9Na5 superatom clusters. The excitation energy is the main controlling factor for hyperpolarizability as revealed from the two-level model study. The electro-optical Pockel's effect and the second harmonic generation phenomenon (SHG) are used to investigate dynamic nonlinear optical features. At a lower applied frequency (=532 nm), the dynamic hyperpolarizability and second hyperpolarizability values are significantly higher for the studied clusters. Furthermore, for the Ge9K5 cluster, the hyper Rayleigh scattering (HRS) increases to 5.03 × 10-26 esu.
Collapse
Affiliation(s)
- Atazaz Ahsin
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - Ahmed Bilal Shah
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad KPK 22060 Pakistan
| |
Collapse
|
37
|
Bratanovici BI, Cojocaru C, Nicolescu A, Dascălu M, Roman G. Di-topic hybrid ligands with an isoxazole ring in the central unit: Synthesis, structural characterization and molecular modeling. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
38
|
Benbouguerra K, Chafai N, Chafaa S, Touahria YI, Tlidjane H. New α-Hydrazinophosphonic acid: Synthesis, characterization, DFT study and in silico prediction of its potential inhibition of SARS-CoV-2 main protease. J Mol Struct 2021; 1239:130480. [PMID: 33903777 PMCID: PMC8059216 DOI: 10.1016/j.molstruc.2021.130480] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/30/2021] [Accepted: 04/13/2021] [Indexed: 12/16/2022]
Abstract
A new α-Hydrazinophosphonic acid (HDZPA) has been synthesized and its molecular structure was determined using spectroscopic methods. The Density Functional Theory (DFT) at the B3LYP/6-31 G (d,p) level was utilized to determine the electronic properties, vibrational modes and active sites of the examined molecule. In this context, some quantum chemical parameters have been calculated in order to discuss the reactivity of the studied molecule. Also, the inhibition activity of the investigated α-Hydrazinophosphonic acid for SARS-CoV-2 main protease (Mpro) and RNA dependent RNA polymerase (RdRp) has been predicted using in silico docking.
Collapse
Affiliation(s)
- Khalissa Benbouguerra
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria,Département de Sciences Agronomiques, Faculté des Sciences de la Nature et de la Vie et des Sciences de la Terre et de l'Univers, Université Mohamed El Bachir El Ibrahimi de Bordj Bou Arréridj El-Anasser, 34030, Algeria
| | - Nadjib Chafai
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria,Corresponding author
| | - Salah Chafaa
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria
| | - Youcef Islam Touahria
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria
| | - Hamida Tlidjane
- Laboratory of Electrochemistry of Molecular Materials and Complex (LEMMC). Department of Process Engineering, Faculty of Technology, University of Ferhat ABBAS Setif-1, El-Mabouda campus, 19000 Sétif, Algeria
| |
Collapse
|
39
|
Examinations directed to characterization within the framework of spectroscopic and DFT approach on the structural isomer of the pyridine substituted thiazole. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
40
|
Bahuguna A, Bharadwaj S, Bajpai VK, Shukla S, Won DW, Park I, Na M, Sonwal S, Huh YS, Han YK, Simal-Gandara J, Xiao J, Kim M. Insights into cyclooxygenase-2 inhibition by isolated bioactive compounds 3-caffeoyl-4-dihydrocaffeoyl quinic acid and isorhamnetin 3-O-β-D-glucopyranoside from Salicornia herbacea. PHYTOMEDICINE 2021; 90:153638. [PMID: 34275700 DOI: 10.1016/j.phymed.2021.153638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/14/2021] [Accepted: 06/20/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2) is an important enzyme with numerous biological functions. Overexpression of COX-2 has been associated with various inflammatory-related diseases and therefore, projected as an important pharmacological target. PURPOSE We aimed to investigate the inhibitory potential of isolated bioactive compounds, 3-caffeoyl-4-dihydrocaffeoyl quinic acid (CDQ) and isorhamnetin 3-O-β-d-glucopyranoside (IDG), from Salicornia herbacea against COX-2 using both computational and in vitro approaches. METHODS Computational analysis, including molecular docking, molecular dynamics (MD) simulations, and post-simulations analysis, were employed to estimate the binding affinity and stability of CDQ and IDG in the catalytic pocket of COX-2 against Celecoxib as positive control. These predictions were further evaluated using in vitro enzyme inhibition as well as gene expression mediation in macrophages cells. RESULTS Molecular docking analysis revealed substantial binding energy of CDQ (-6.1 kcal/mol) and IDG (-5.9 kcal/mol) with COX-2, which are lower than Celecoxib (-8.1 kcal/mol). MD simulations (100 ns) and post simulation analysis exhibited the substantial stability and binding affinity of docked CDQ and IDG compounds with COX-2. In vitro assays indicated significant COX-2 inhibition by CDQ (IC50 = 76.91 ± 2.33 μM) and IDG (IC50 = 126.06 ± 9.44 μM). This result supported the inhibitory potential of isolated bioactive compounds against COX-2. Also, a cellular level study revealed a downregulation of COX-2 expression in tumor necrosis factor-alpha stimulated RAW 264.7 macrophages treated with CDQ and IDG. CONCLUSION Computational and experimental analysis of CDQ and IDG from S. herbacea established their potential in the inhibition and mediation of COX-2. Hence, CDQ and IDG can be considered for therapeutic development against COX-2 linked disorders, such as inflammation and cancer. Furthermore, CDQ and IDG structures can be served as a lead compound for the development of advanced novel anti-inflammatory drugs.
Collapse
Affiliation(s)
- Ashutosh Bahuguna
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do 38541, South Korea
| | - Shiv Bharadwaj
- Nanotechnology Research and Application Center, Sabanci University, Istanbul 34956, Turkey
| | - Vivek K Bajpai
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, South Korea
| | - Shruti Shukla
- TERI-Deakin Nanobiotechnology Centre, The Energy and Resources Institute, Gwal Pahari, Gurugram, Haryana 122003, India
| | - Dong Wook Won
- College of Pharmacy, Chungnam National University, Daejeon 34134, South Korea
| | - InWha Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), Gangneung, Gangwon-do 25451, South Korea
| | - MinKyun Na
- College of Pharmacy, Chungnam National University, Daejeon 34134, South Korea.
| | - Sonam Sonwal
- Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon 22212, South Korea
| | - Yun Suk Huh
- Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon 22212, South Korea.
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, South Korea.
| | - Jesus Simal-Gandara
- Department of Analytical Chemistry and Food Science, University of Vigo - Ourense Campus, E-32004 Ourense, Spain
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, University of Vigo - Ourense Campus, E-32004 Ourense, Spain; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China.
| | - Myunghee Kim
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do 38541, South Korea.
| |
Collapse
|
41
|
Synthesis, Characterization, In vivo, Molecular Docking, ADMET and HOMO-LUMO study of Juvenile Hormone Analogues having sulfonamide feature as an Insect Growth Regulators. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
42
|
Hammoudi NEH, Sobhi W, Attoui A, Lemaoui T, Erto A, Benguerba Y. In silico drug discovery of Acetylcholinesterase and Butyrylcholinesterase enzymes inhibitors based on Quantitative Structure-Activity Relationship (QSAR) and drug-likeness evaluation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129845] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
43
|
Shaibuna M, Kuniyil MJK, Sreekumar K. Deep eutectic solvent assisted synthesis of dihydropyrimidinones/thiones via Biginelli reaction: theoretical investigations on their electronic and global reactivity descriptors. NEW J CHEM 2021. [DOI: 10.1039/d1nj03879f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DES 2 (ZrOCl2·8H2O-ethylene glycol at 1 : 2 ratio) was used as a catalyst for the synthesis of dihydropyrimidinones/thiones via a Biginelli reaction.
Collapse
Affiliation(s)
- M. Shaibuna
- Department of Applied Chemistry, Cochin University of Science and Technology, Cochin 682022, India
| | | | - K. Sreekumar
- Department of Applied Chemistry, Cochin University of Science and Technology, Cochin 682022, India
| |
Collapse
|
44
|
Ohashi S, Rachita E, Baxley S, Zhou J, Erlichman A, Ishida H. The first observation on polymerization of 1,3-benzothiazines: synthesis of mono- and bis-thiazine monomers and thermal properties of their polymers. Polym Chem 2021. [DOI: 10.1039/d0py01521k] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mono and difunctional 1,3-benzothiazines (PH-a-BZT, PH-ddm-BZT) have been synthesized by a method different from the one reported in the literature.
Collapse
Affiliation(s)
- Seishi Ohashi
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
| | - Eric Rachita
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
| | - Sean Baxley
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
| | - Jessica Zhou
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
| | - Adam Erlichman
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
| | - Hatsuo Ishida
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
| |
Collapse
|
45
|
1-Naphthols as components for multifunctional material systems (MFMS): the molecular modeling approach. Struct Chem 2020. [DOI: 10.1007/s11224-020-01674-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractIncreasing research interests have been paid to developing efficient multifunctional material systems (MFMS) by using various composite materials, owing to their useful properties and good stability. Here, we systematically studied 1-naphthols, especially how the type and position of a substituent influence the reactivity and properties, using different electron-directing groups. During computations, important preparation guidelines for thiol derivatives of 1-naphthol were obtained. It is very interesting to note that some molecules could exhibit intramolecular O–H–O interactions. Careful theoretical investigation reveals that all the tested compounds are stable and the molecules with substituents in positions 4 and 8 are the least reactive. It is also worth noting that for the stability and polarizability tensor values, it is more favorable when both substituents are in the same benzene ring. Among tested 1-naphthols, the greatest values of alpha, beta, and gamma are more than 5, 60, and 110 times better respectively, than in the urea molecule; the change of electron-withdrawing group (EWG) to electron-donating group (EDG) increases NLO effects. This study provided a new scope of 1-naphthols applicability by using them as anti-corrosion materials and as very good materials for NLO devices due to the high stability of the aromatic structure coupled with polarity given by the substituents. Also, the understanding of IR vibrations for more complex organic compounds with thiol substituent has been improved.
Collapse
|
46
|
QSAR modeling, docking, ADME and reactivity of indazole derivatives as antagonizes of estrogen receptor alpha (ER-α) positive in breast cancer. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
47
|
Pratiwi R, Ibrahim S, Tjahjono DH. Reactivity and Stability of Metalloporphyrin Complex Formation: DFT and Experimental Study. Molecules 2020; 25:molecules25184221. [PMID: 32942553 PMCID: PMC7570457 DOI: 10.3390/molecules25184221] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 11/16/2022] Open
Abstract
The interaction of three cationic porphyrins—meso-tetrakis (N-methylpyridinium-4-yl) porphyrin (TMPyP), meso-tetrakis (1,3-dimethylimidazolium-2-yl) porphyrin (TDMImP), and meso-tetrakis (1,2-dimethylpyrazolium-4-yl) porphyrin (TDMPzP)—with five heavy metals was studied computationally, and binding constants were calculated based on data obtained by an experimental method and compared. The reactivity and stability of their complexes formed with lead, cadmium, mercury, tin, and arsenic ions were observed in DFT global chemical reactivity descriptors: the electronic chemical potential (µ), chemical hardness (η), and electrophilicity (ω). The results show that M-TDMPzP has higher chemical hardness and lower electrophilicity compared to M-TMPyP and M-TDMImP, indicating the reaction of TDMPzP with metals will form a more stable complex. Specifically, Cd-TDMPzP complexes can stabilize the system, with a lower energy and electronic chemical potential, higher chemical hardness, smaller electrophilicity, and higher binding constant value compared to Pb-TDMPzP and Hg-TDMPzP. This result suggests that the interaction of the Cd2+ ion with TDMPzP will produce a stable complex.
Collapse
Affiliation(s)
- Rimadani Pratiwi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21, Jatinangor 45363, Indonesia
- School of Pharmacy, Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia;
- Correspondence: (R.P.); (D.H.T.); Tel.: +62-813-9413-3381 (R.P.); +62-812-2240-0120 (D.H.T.)
| | - Slamet Ibrahim
- School of Pharmacy, Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia;
| | - Daryono H. Tjahjono
- School of Pharmacy, Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia;
- Correspondence: (R.P.); (D.H.T.); Tel.: +62-813-9413-3381 (R.P.); +62-812-2240-0120 (D.H.T.)
| |
Collapse
|
48
|
Babaei S, Niad M. Chemical reactivity descriptors as a tool of prediction in the synthesis of sandwich type polyoxometalate organic–inorganic hybrid compounds. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
49
|
Kirouani I, Hellal A, Haddadi I, Layaida H, Madani A, Madani S, Haroun MF, Rachida D, Touafri L, Bensouici C. Effect of the phosphonomethylene moiety on the structural, vibrational, energetic, thermodynamic and optical proprieties of ((Phenylcarbamoylmethyl-phosphonomethyl-amino)-methyl)-phosphonic acid: DFT investigation. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
50
|
Mohan V, Das N, Jain VK, Khan T, Pandey SK, Faizi MSH, Daniel J, Sen P. Highly Selective and Sensitive (PPB Level) Quinolin‐Based Colorimetric Chemosensor for Cu(II). ChemistrySelect 2020. [DOI: 10.1002/slct.202001814] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Vaisakh Mohan
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
- Present address: Department of Chemistry TKM College of Engineering Kollam 691 005 Kerala India
| | - Nilimesh Das
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
| | - Vipin K. Jain
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
| | - Tanmoy Khan
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
| | - Sarvesh K. Pandey
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
- Present address: Department of Inorganic and Physical Chemistry Indian Institute of Science Bangalore Bangalore 560 012 Karnataka India
| | - Md. Serajul H. Faizi
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
- Present address: Department of Chemistry Langat Singh College B. R. A. Bihar University Muzaffarpur 842 001 Bihar India
| | - Joseph Daniel
- Department of Chemistry Christ Church College Kanpur 208 001 UP India
| | - Pratik Sen
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 UP India
| |
Collapse
|