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Malachy Udowo V, Unimuke TO, Louis H, Udoh II, Edet HO, Okafor PC. Enhanced sensing of bacteria biomarkers by ZnO and graphene oxide decorated PEDOT film. J Biomol Struct Dyn 2024:1-14. [PMID: 38499994 DOI: 10.1080/07391102.2024.2328740] [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: 08/22/2023] [Accepted: 03/05/2024] [Indexed: 03/20/2024]
Abstract
Developing a biofilm biomarker detector and inhibitor will immensely benefit efforts geared at curbing infectious diseases and microbiologically induced corrosion of medical implants, marine vessels and buried steel pipelines. N-Acyl homoserine lactones (AHLs) are important biomarkers gram-negative bacteria use for communication. In this work, we investigated the interactions between three AHL molecules and graphene oxide (GO) and ZnO nanomaterials embedded in conjugated poly(3,4-ethylenedioxythiophene) (PEDOT) film. The results show that PEDOT/GO/ZnO detected AHLs to a considerable extent with adsorption enthalpies of -4.02, -4.87 and -4.97 KJ/mol, respectively, for N-(2-oxotetrahydrofuran-3-yl)heptanamide (AHL1), 2-hydroxy-N-(2-oxotetrahydrofuran-3-yl)nonanamide (AHL2) and (E)-3-(3-hydroxyphenyl)-N-(2-oxotetrahydrofuran-3-yl)acrylamide (AHL3) molecules. The ZnO nanoparticles facilitated charge redistribution and transfer, thereby enhancing the conductivity and overall sensitivity of the substrate toward the AHLs. The adsorption distance and sites of interactions further tuned the charge migration and signal generation by the substrate, thus affirming the suitability of the modeled thin film as a sensor material. Excellent stability and conductivity were maintained before and after the adsorption of each AHL molecule. Moreover, the desorption time for each AHL molecule was calculated, and the result affirmed that the modeled film materials are promising for developing highly sensitive biosensors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Victor Malachy Udowo
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
- School of Materials Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Tomsmith O Unimuke
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Hitler Louis
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy or Research and Education, Kelambakkam, Tamil Nadu, India
| | - Inime Ime Udoh
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Henry O Edet
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Peter C Okafor
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
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2
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Amodu IO, Olaojotule FA, Ogbogu MN, Olaiya OA, Benjamin I, Adeyinka AS, Louis H. Adsorption and sensor performance of transition metal-decorated zirconium-doped silicon carbide nanotubes for NO 2 gas application: a computational insight. RSC Adv 2024; 14:5351-5369. [PMID: 38348297 PMCID: PMC10859909 DOI: 10.1039/d3ra08796d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 01/24/2024] [Indexed: 02/15/2024] Open
Abstract
Owing to the fact that the detection limit of already existing sensor-devices is below 100% efficiency, the use of 3D nanomaterials as detectors and sensors for various pollutants has attracted interest from researchers in this field. Therefore, the sensing potentials of bare and the impact of Cu-group transition metal (Cu, Ag, Au)-functionalized silicon carbide nanotube (SiCNT) nanostructured surfaces were examined towards the efficient detection of NO2 gas in the atmosphere. All computational calculations were carried out using the density functional theory (DFT) electronic structure method at the B3LYP-D3(BJ)/def2svp level of theory. The mechanistic results showed that the Cu-functionalized silicon carbide nanotube surface possesses the greatest adsorption energies of -3.780 and -2.925 eV, corresponding to the adsorption at the o-site and n-site, respectively. Furthermore, the lowest energy gap of 2.095 eV for the Cu-functionalized surface indicates that adsorption at the o-site is the most stable. The stability of both adsorption sites on the Cu-functionalized surface was attributed to the small ellipticity (ε) values obtained. Sensor mechanisms confirmed that among the surfaces, the Cu-functionalized surface exhibited the best sensing properties, including sensitivity, conductivity, and enhanced adsorption capacity. Hence, the Cu-functionalized SiCNT can be considered a promising choice as a gas sensor material.
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Affiliation(s)
- Ismail O Amodu
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Mathematics, University of Calabar Calabar Nigeria
| | - Faith A Olaojotule
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Miracle N Ogbogu
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | | | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University Chennai India
| | - Adedapo S Adeyinka
- Department of Chemical Sciences, University of Johannesburg Pretoria South Africa
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- School of Chemistry, University of Leeds Leeds LS2 9JT UK
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Ling L, Louis H, Isang BB, Emori W, Benjamin I, Ahuekwe EF, Cheng CR, Manicum ALE. Inflammatory Studies of Dehydroandrographolide: Isolation, Spectroscopy, Biological Activity, and Theoretical Modeling. Appl Biochem Biotechnol 2024; 196:417-435. [PMID: 37140782 DOI: 10.1007/s12010-023-04566-y] [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] [Accepted: 04/26/2023] [Indexed: 05/05/2023]
Abstract
Dehydroandrographolide (DA) was isolated and experimentally characterized utilizing FT-IR, UV-Vis, and NMR spectroscopy techniques along with detailed theoretical modelled at the DFT/B3LYP-D3BJ/6-311 + + G(d,p) level of theory. Substantially, molecular electronic property investigations in the gaseous phase alongside five different solvents (ethanol, methanol, water, acetonitrile and DMSO) were comprehensively reported and compared with the experimental results. The globally harmonized scale (GHS), which is used to identify and label chemicals, was also utilized to demonstrate that the lead compound predicted an LD50 of 1190 mg/kg. This finding implies that consumers can safely consume the lead molecule. Notable impacts on hepatotoxicity, cytotoxicity, mutagenicity, and carcinogenicity were likewise found to be minimal to nonexistent for the compound. Additionally, in order to account for the biological performance of the studied compound, in-silico molecular docking simulation analysis was examined against different anti-inflammatory target of enzymes (3PGH, 4COX, and 6COX). From the examination, it can be inferred that DA@3PGH, DA@4COX, and DA@6COX, respectively, showed significant negative binding affinities of -7.2 kcal/mol, -8.0 kcal/mol, and - 6.9 kcal/mol. Thus, the high mean binding affinity in contrast to conventional drugs further reinforces these results as an anti-inflammatory agent.
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Affiliation(s)
- Liu Ling
- School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, PR China
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria.
| | - Bartholomew B Isang
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Wilfred Emori
- School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, PR China.
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria
| | - Eze F Ahuekwe
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria.
- Department of Biological Sciences, Covenant University, Ota, Nigeria.
| | - Chun-Ru Cheng
- College of Chemical Engineering, Institute of Pharmaceutical Engineering Technology and Application, Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Sichuan University of Science & Engineering, Zigong, 643000, Sichuan, PR China
| | - Amanda-Lee E Manicum
- Department of Chemical sciences, University of Johannesburg, Gauteng, South Africa
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Nath J, Baruah JB. E- or Z-Isomers Arising from the Geometries of Ligands in the Mercury Complex of 2-(Anthracen-9-ylmethylene)- N-phenylhydrazine Carbothioamide. ACS OMEGA 2023; 8:42827-42839. [PMID: 38024736 PMCID: PMC10653070 DOI: 10.1021/acsomega.3c05806] [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: 08/07/2023] [Revised: 09/30/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023]
Abstract
An anionic mercury(II) complex of 2-(anthracen-9-ylmethylene)-N-phenylhydrazine carbothioamide (HATU) and two isomers of a neutral mercury(II) complex of the anion of the same ligand (ATU) were reported. The anionic complex [Hg(HATU)2Cl2]·CH2Cl2 had a monodentate HATU ligand (a neutral form of the ligand) and chloride ligands. The two conformational isomers were of the neutral mercury(II) complex Hg(ATU)2·2DMF. The two isomers were from the E or Z geometry of the ligands across the conjugated C=N-N=C-N scaffold of the coordinated ligand. The two isomers of the complex were independently prepared and characterized. The spectroscopic properties of the isomers in solution were studied by 1H NMR as well as fluorescence spectroscopy. Facile conversion of the E-isomer to the Z-isomer in solution was observed. Density functional theory (DFT) calculations revealed that the Z-isomer of the complex was stable compared to the E-isomer by an energy of 14.35 kJ/mol; whereas, E isomer of the ligand was more stable than Z isomer by 8.37 KJ/mol. The activation barrier for the conversion of the E-isomer to the Z-isomer of the ligand was 167.37 kJ/mol. The role of the mercury ion in the conversion of the E-form to the Z-form was discussed. The mercury complex [Hg(HATU)2Cl2]·CH2Cl2 had the E-form of the ligand. Distinct photophysical features of these mercury complexes were presented.
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Affiliation(s)
- Jitendra Nath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam India
| | - Jubaraj B. Baruah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam India
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Udoikono AD, Agwamba EC, Louis H, Benjamin I, Ahmad I, Ejiofor EU, Ahuekwe EF, Chukwuemeka K, Adeyinka AS, Patel HM, Manicum AL, Edim M. Anti-inflammatory biomolecular activity of chlorinated-phenyldiazenyl-naphthalene-2-sulfonic acid derivatives: perception from DFT, molecular docking, and molecular dynamic simulation. J Biomol Struct Dyn 2023; 41:10136-10160. [PMID: 36519503 DOI: 10.1080/07391102.2022.2153414] [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: 08/01/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022]
Abstract
In this study, two novel derivatives of naphthalene-2-sulfonic acid: 6-(((1S,5R)-3,5-dichloro-2,4,6-triazabicyclo [z3.1.0]hex-3-en-1-yl)amino)-5-((E)-phenyldiazenyl)naphthalene-2-sulfonic acid (DTPS1) and (E)-6-((4,6-dichloro-1,3,5-triazine2-yl)amino)-4-hydroxy-3-(phenyldiazenyl)naphthalene-2-sulfonic acid (DTPS2) have been synthesized and characterized using FT-IR, UV-vis, and NMR spectroscopic techniques. Applying density functional theory (DFT) at the B3LYP, APFD, PBEPBE, HCTH, TPSSTPSS, and ωB97XD/aug-cc-pVDZ level of theories for the electronic structural properties. In-vitro analysis, molecular docking, molecular dynamic (MD) simulation of the compounds was conducted to investigate the anti-inflammatory potential using COXs enzymes. Docking indicates binding affinity of -9.57, -9.60, -6.77 and -7.37 kcal/mol for DTPS1, DTPS2, Ibuprofen and Diclofenac which agrees with in-vitro assay. Results of MD simulation, indicates sulphonic group in DTPS1 has > 30% interaction with the hydroxyl and oxygen atoms in amino acid residues, but > 35% interaction with the DTPS2. It can be said that the DTPS1 and DTPS2 can induce inhibitory effect on COXs to halt biosynthesis of prostaglandins (PGs), a chief mediator of inflammation and pain in mammals.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Akaninyene D Udoikono
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Ernest C Agwamba
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemical Sciences, Clifford University Owerrinta, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Iqrar Ahmad
- Department of Biological Sciences, Covenant University, Ota, Nigeria
| | - Emmanuel U Ejiofor
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemical Sciences, Clifford University Owerrinta, Nigeria
| | - Eze F Ahuekwe
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Biological Sciences, Covenant University, Ota, Nigeria
| | - Kelechi Chukwuemeka
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemical Sciences, Clifford University Owerrinta, Nigeria
| | - Adedapo S Adeyinka
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Harun M Patel
- Department of Biological Sciences, Covenant University, Ota, Nigeria
- Division of Computer-Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
| | - Amanda-Lee Manicum
- Department of Chemistry, Tshwane University of Technology, Pretoria, South Africa
| | - Moses Edim
- Cross River State University of Technology, Calabar, Nigeria
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Benjamin I, Louis H, Ogungbemiro FO, Agurokpon DC, Ekpong BO, Gber TE, Pembere AMS. Single-atoms (N, P, S) encapsulation of Ni-doped graphene/PEDOT hybrid materials as sensors for H 2S gas applications: intuition from computational study. Sci Rep 2023; 13:18856. [PMID: 37914823 PMCID: PMC10620405 DOI: 10.1038/s41598-023-46153-5] [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: 09/01/2023] [Accepted: 10/28/2023] [Indexed: 11/03/2023] Open
Abstract
This comprehensive study was dedicated to augmenting the sensing capabilities of Ni@GP_PEDOT@H2S through the strategic functionalization with nitrogen, phosphorus, and sulfur heteroatoms. Governed by density functional theory (DFT) computations at the gd3bj-B3LYP/def2svp level of theory, the investigation meticulously assessed the performance efficacy of electronically tailored nanocomposites in detecting H2S gas-a corrosive byproduct generated by sulfate reducing bacteria (SRB), bearing latent threats to infrastructure integrity especially in the oil and gas industry. Impressively, the analysed systems, comprising Ni@GP_PEDOT@H2S, N_Ni@GP_PEDOT@H2S, P_Ni@GP_PEDOT@H2S, and S_Ni@GP_PEDOT@H2S, unveiled both structural and electronic properties of noteworthy distinction, thereby substantiating their heightened reactivity. Results of adsorption studies revealed distinct adsorption energies (- 13.0887, - 10.1771, - 16.8166, and - 14.0955 eV) associated respectively with N_Ni@GP_PEDOT@H2S, P_Ni@GP_PEDOT@H2S, S_Ni@GP_PEDOT@H2S, and Ni@GP_PEDOT systems. These disparities vividly underscored the diverse strengths of the adsorbed H2S on the surfaces, significantly accentuating the robustness of S_Ni@GP_PEDOT@H2S as a premier adsorbent, fuelled by the notably strong sulfur-surface interactions. Fascinatingly, the sensor descriptor findings unveiled multifaceted facets pivotal for H2S detection. Ultimately, molecular dynamic simulations corroborated the cumulative findings, collectively underscoring the pivotal significance of this study in propelling the domain of H2S gas detection and sensor device innovation.
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Affiliation(s)
- Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Microbiology, University of Calabar, Calabar, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria.
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria.
| | - Festus O Ogungbemiro
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemistry, Federal University of Lafia, Lafia, Nassarawa State, Nigeria
| | - Daniel C Agurokpon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Bassey O Ekpong
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Microbiology, University of Calabar, Calabar, Nigeria
| | - Terkumbur E Gber
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Anthony M S Pembere
- Department of Chemistry, Jaramogi Odinga University of Science and Technology, Bondo, Kenya
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Ejiofor EU, Ishebe JE, Benjamin I, Okon GA, Gber TE, Louis H. Exploring the potential of single-metals (Cu, Ni, Zn) decorated Al 12N 12 nanostructures as sensors for flutamide anticancer drug. Heliyon 2023; 9:e20682. [PMID: 37867907 PMCID: PMC10589786 DOI: 10.1016/j.heliyon.2023.e20682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 08/28/2023] [Accepted: 10/04/2023] [Indexed: 10/24/2023] Open
Abstract
In recent years, scientists have been actively exploring and expanding biosensor technologies and materials to meet the growing societal demands in healthcare and other fields. This study aims to revolutionize biosensors by using density functional theory (DFT) at the cutting-edge B3LYP-GD3BJ/def2tzsvp level to investigate the sensing capabilities of (Cu, Ni, and Zn) doped on Aluminum nitride (Al12N12) nanostructures. Specifically, we focus on their potential to detect, analyze, and sense the drug flutamide (FLU) efficiently. Through advanced computational techniques, we explore molecular interactions to pave the way for highly effective and versatile biosensors. The adsorption energy values of -38.76 kcal/mol, -39.39 kcal/mol, and -39.37 kcal/mol for FLU@Cu-Al12N12, FLU@Ni-Al12N12, and FLU@Zn-Al12N12, respectively, indicate that FLU chemically adsorbs on the studied nanostructures. The reactivity and conductivity of the system follow a decreasing pattern: FLU@Cu-Al12N12 > FLU@Ni-Al12N12 > FLU@Zn-Al12N12, with a band gap of 0.267 eV, 2.197 eV, and 2.932 eV, respectively. These results suggest that FLU preferably adsorbs on the Al12N12@Cu surface. Natural bond orbital analysis reveals significant transitions in the studied system. Quantum theory of atom in molecule (QTAIM) and Non-covalent interaction (NCI) analysis confirm the nature and strength of interactions. Overall, our findings indicate that the doped surfaces show promise as electronic and biosensor materials for detection of FLU in real-world applications. We encourage experimental researchers to explore the use of (Cu, Ni, and Zn) doped on Aluminum nitride (Al12N12), particularly Al12N12@Cu, for biosensor applications.
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Affiliation(s)
- Emmanuel U. Ejiofor
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
| | | | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Gideon A. Okon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Terkumbur E. Gber
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
- Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, Tamil Nadu, India
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8
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Javed M, Khan MU, Hussain R, Ahmed S, Ahamad T. Deciphering the electrochemical sensing capability of novel Ga 12As 12 nanocluster towards chemical warfare phosgene gas: insights from DFT. RSC Adv 2023; 13:28885-28903. [PMID: 37790104 PMCID: PMC10543987 DOI: 10.1039/d3ra05086f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023] Open
Abstract
The applications of 3D inorganic nanomaterials in environmental and agriculture monitoring have been exploited continuously; however, the utilization of semiconductor nanoclusters, especially for detecting warfare agents, has not been fully investigated yet. To fill this gap, the molecular modelling of novel inorganic semiconductor nanocluster Ga12As12 as a sensor for phosgene gas (highly toxic for living things and the environment) is accomplished employing benchmark DFT and TD-DFT investigations. Computational tools have been applied to explore different adsorption sites and the potential sensing capability of the Ga12As12 nanoclusters. The calculated adsorption energy (-21.34 ± 2.7 kcal mol-1) for ten selected complexes, namely, Pgn-Cl@4m-ring (MS1), Pgn-Cl@6m-ring (MS2), Pgn-Cl@XY66 (MS3), Pgn-O@4m-ring (MS4), Pgn-O@XY66 (MS5), Pgn-O@XY64 (MS6), Pgn-O@Y (MS7), Pgn-planar@Y (MS8), Pgn-planar@X (MS9), and Pgn-planar@4m-ring (MS10), manifest the remarkable and excessive adsorption response of the studied nanoclusters. The explored molecular electronic properties, such as interaction distance (3.05 ± 0.5 Å), energy gap (∼2.17 eV), softness (∼0.46 eV), hardness (1.10 ± 0.01 eV), electrophilicity index (10.27 ± 0.45 eV), electrical conductivity (∼1.98 × 109), and recovery time (∼3 × 10-12 s-1) values, ascertain the elevated reactivity and an imperishable sensitivity of the Ga12As12 nanocluster, particularly for its complex MS8. QTAIM analysis exhibits the presence of a strong electrostatic bond (positive ∇2ρ(r) values), electron delocalization (ELF < 0.5), and a strong chemical bond (because of high all-electron density values). In addition, NBO analysis explores the lone pair electron delocalization of phosgene to the nanocluster stabilized by intermolecular charge transfer (ICT) and different kinds of non-covalent interactions. Also, the green region existence expressed by NCI analysis (between the nanocluster and adsorbate) stipulate the energetic and dominant interactions. Furthermore, the UV-Vis, thermodynamic analysis, and density of state (DOS) demonstrate the maximum absorbance (562.11 nm) and least excitation energy (2.21 eV) by the complex MS8, the spontaneity of the interaction process, and the significant changes in HOMO and LUMO energies, respectively. Thus, the Ga12As12 nanocluster has proven to be a promising influential sensing material to monitor phosgene gas in the real world, and this study will emphasize the informative knowledge for experimental researchers to use Ga12As12 as a sensor for the warfare agent (phosgene).
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Affiliation(s)
- Muhammad Javed
- Department of Chemistry, University of Okara Okara-56300 Pakistan
| | | | - Riaz Hussain
- Department of Chemistry, University of Okara Okara-56300 Pakistan
| | - Sarfraz Ahmed
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital Boston MA 02114 USA
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University Saudi Arabia
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9
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Gber TE, Louis H, Ngana OC, Amodu IO, Ekereke EE, Benjamin I, Adalikwu SA, Adeyinka A. Yttrium- and zirconium-decorated Mg 12O 12-X (X = Y, Zr) nanoclusters as sensors for diazomethane (CH 2N 2) gas. RSC Adv 2023; 13:25391-25407. [PMID: 37636506 PMCID: PMC10448449 DOI: 10.1039/d3ra02939e] [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: 05/03/2023] [Accepted: 07/21/2023] [Indexed: 08/29/2023] Open
Abstract
Diazomethane (CH2N2) presents a notable hazard as a respiratory irritant, resulting in various adverse effects upon exposure. Consequently, there has been increasing concern in the field of environmental research to develop a sensor material that exhibits heightened sensitivity and conductivity for the detection and adsorption of this gas. Therefore, this study aims to provide a comprehensive analysis of the geometric structure of three systems: CH2N2@MgO (C1), CH2N2@YMgO (CY1), and CH2N2@ZrMgO (CZ1), in addition to pristine MgO nanocages. The investigation involves a theoretical analysis employing the DFT/ωB97XD method at the GenECP/6-311++G(d,p)/SDD level of theory. Notably, the examination of bond lengths within the MgO cage yielded specific values, including Mg15-O4 (1.896 Å), Mg19-O4 (1.952 Å), and Mg23-O4 (1.952 Å), thereby offering valuable insights into the structural properties and interactions with CH2N2 gas. Intriguingly, after the interaction, bond length variations were observed, with CH2N2@MgO exhibiting shorter bonds and CH2N2@YMgO showcasing longer bonds. Meanwhile, CH2N2@ZrMgO displayed shorter bonds, except for a longer bond in Mg19-O4, suggesting increased stability due to shorter bond distances. The study further investigated the electronic properties, revealing changes in the energy gap that influenced electrical conductivity and sensitivity. The energy gap increased for Zr@MgO, CH2N2@MgO, CH2N2@YMgO, and CH2N2@ZrMgO, indicating weak interactions on the MgO surface. Conversely, Y@MgO showed a decrease in energy, suggesting a strong interaction. The pure MgO surface exhibited the ability to donate and accept electrons, resulting in an energy gap of 4.799 eV. Surfaces decorated with yttrium and zirconium exhibited decreased energies of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO), as well as decreased energy gap, indicating increased conductivity and sensitivity. Notably, Zr@MgO had the highest energy gap before CH2N2 adsorption, but C1 exhibited a significantly higher energy gap after adsorption, implying increased conductivity and sensitivity. The study also examined the density of states, demonstrating significant variations in the electronic properties of MgO and its decorated surfaces due to CH2N2 adsorption. Moreover, various analysis techniques were employed, including natural bond orbital (NBO), quantum theory of atoms in molecules (QTAIM), and noncovalent interaction (NCI) analysis, which provided insights into bonding, charge density, and intermolecular interactions. The findings contribute to a deeper understanding of the sensing mechanisms of CH2N2 gas on nanocage surfaces, shedding light on adsorption energy, conductivity, and recovery time. These results hold significance for gas-sensing applications and provide a basis for further exploration and development in this field.
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Affiliation(s)
- Terkumbur E Gber
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
- Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education Kelambakkam-603103 Tamil Nadu India
| | - Obinna C Ngana
- Department of Chemical Sciences, Federal University of Wukari Wukari Taraba State Nigeria
| | - Ismail O Amodu
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Mathematics, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Ernest E Ekereke
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Mathematics, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Stephen A Adalikwu
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Adedapo Adeyinka
- Department of Chemical Sciences, University of Johannesburg South Africa
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Okon GA, Louis H, Eno EA, Chukwuemeka K, Agwamba EC, Adeyinka AS. First-principle study of Cu-, Ag-, and Au-decorated Si-doped carbon quantum dots (Si@CQD) for CO 2 gas sensing efficacies. J Mol Model 2023; 29:229. [PMID: 37407799 DOI: 10.1007/s00894-023-05627-z] [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: 12/07/2022] [Accepted: 06/21/2023] [Indexed: 07/07/2023]
Abstract
CONTEXT Nanosensor materials for the trapping and sensing of CO2 gas in the ecosystem were investigated herein to elucidate the adsorption, sensibility, selectivity, conductivity, and reactivity of silicon-doped carbon quantum dot (Si@CQD) decorated with Ag, Au, and Cu metals. The gas was studied in two configurations on its O and C sites. When the metal-decorated Si@CQD interacted with the CO2 gas on the C adsorption site of the gas, there was a decrease in all the interactions with the lowest energy gap of 1.084 eV observed in CO2_C_Cu_Si@CQD followed by CO2_C_Au_Si@CQD which recorded a slightly higher energy gap of 1.094 eV, while CO2_C_Ag_Si@CQD had an energy gap of 2.109 eV. On the O adsorption sites, a decrease was observed in CO2_O_Au_Si@CQD which had the least energy gap of 1.140 eV, whereas there was a significant increase after adsorption in CO2_O_Ag_Si@CQD and CO2_O_Cu_Si@CQD with calculated ∆E values of 2.942 eV and 3.015 eV respectively. The adsorption energy alongside the basis set supposition error (BSSE) estimation reveals that CO2_C_Au_Si@CQD, CO2_C_Ag_Si@CQD, and CO2_C_Cu_Si@CQD were weakly adsorbed, while chemisorption was present in the CO2_O_Ag_Si@CQD, CO2_O_Cu_Si@CQD, and CO2_O_Au_Si@CQD interactions. Indeed, the adsorption of CO2 on the different metal-decorated quantum dots affects the Fermi level (Ef) and the work function (Φ) of each of the decorated carbon quantum dots owed to their low Ef values and high ∆Φ% which shows that they can be a prospective work function-based sensor material. METHODS Electronic structure theory method based on first-principle density functional theory (DFT) computation at the B3LYP-GD3(BJ)/Def2-SVP level of theory was utilized through the use of the Gaussian 16 and GaussView 6.0.16 software packages. Post-processing computational code such as multi-wavefunction was employed for result analysis and visualization.
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Affiliation(s)
- Gideon A Okon
- Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria.
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria.
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, 603103, India.
| | - Ededet A Eno
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Kelechi Chukwuemeka
- Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Ernest C Agwamba
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemistry, Covenant University, Ota, Nigeria
| | - Adedapo S Adeyinka
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
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11
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Mujafarkani N, Bassey V, Tokono JJ, Ahamed AJ, Benjamin I, Agurokpon DC, Waliya YJ, Louis H. Synthesis, characterization, and molecular modeling of phenylenediamine-phenylhydrazine-formaldehyde terpolymer (PPHF) as potent anti-inflammatory agent. Heliyon 2023; 9:e18067. [PMID: 37483726 PMCID: PMC10362139 DOI: 10.1016/j.heliyon.2023.e18067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/05/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023] Open
Abstract
Inflammation, a characteristic physiological response to infections and tissue damage, commences with processes involving tissue repair and pathogen elimination, contributing to the restoration of homeostasis at affected sites. Hence, this study presents a comprehensive analysis addressing diverse aspects associated with this phenomenon. The investigation encompasses the synthesis, spectral characterizations (FT-IR, 1H NMR, and 13C NMR), and molecular modeling of p-phenylenediamine-phenylhydrazine-formaldehyde terpolymer (PPHF), a potent agent in promoting inflammation. To explore the reactivity, bonding nature, and spectroscopy, as well as perform molecular docking for in-silico biological evaluation, density functional theory (DFT) utilizing the def2svp/B3LYP-D3BJ method was employed. The results reveal significant biological activity of the tested compound in relation to anti-inflammatory proteins, specifically 6JD8, 5TKB, and 4CYF. Notably, upon interaction between PPHF and 6JD8, a binding affinity of -4.5 kcal/mol was observed. Likewise, the interaction with 5TKB demonstrated an affinity of -7.8 kcal/mol. Furthermore, a bonding affinity of -8.1 kcal/mol was observed for the interaction with 4CYF. Importantly, these values closely correspond to those obtained from the interaction between the proteins and the standard drug ibuprofen (IBF), which exhibited binding affinities of -5.9 kcal/mol, -7.0 kcal/mol, and -6.1 kcal/mol, respectively. Thus, these results provide compelling evidence affirming the tremendous potential of p-phenylenediamine-phenylhydrazine-formaldehyde (PPHF) as a highly promising anti-inflammatory agent, owing to the presence of nitrogen-a heteroatom within the compound.
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Affiliation(s)
- N. Mujafarkani
- PG and Research Department of Chemistry, Jamal Mohamed College (Autonomous), (Affiliated to Bharathidasan University), Tiruchirappalli, 620020, Tamilnadu, India
| | - Victoria Bassey
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Jumbo J. Tokono
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - A. Jafar Ahamed
- PG and Research Department of Chemistry, Jamal Mohamed College (Autonomous), (Affiliated to Bharathidasan University), Tiruchirappalli, 620020, Tamilnadu, India
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Daniel C. Agurokpon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Microbiology, University of Cross River State, Calabar Nigeria
| | - Yohanna J. Waliya
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, Tamil Nadu, India
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12
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Akpe MA, Okon GA, Louis H, Benjamin I, Akem MU, Brown OI, Adalikwu SA, Adeyinka AS. Metals (Ga, In) decorated fullerenes as nanosensors for the adsorption of 2,2-dichlorovinyldimethylphosphate agrochemical based pollutant. Sci Rep 2023; 13:10470. [PMID: 37380664 DOI: 10.1038/s41598-023-37650-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 06/25/2023] [Indexed: 06/30/2023] Open
Abstract
Owing to the fact that the use of 2,2-dichlorovinyldimethylphosphate (DDVP) as an agrochemical has become a matter of concern due to its persistence and potential harm to the environment and human health. Detecting and addressing DDVP contamination is crucial to protect human health and mitigate ecological impacts. Hence, this study focuses on harnessing the properties of fullerene (C60) carbon materials, known for their biological activities and high importance, to develop an efficient sensor for DDVP. Additionally, the sensor's performance is enhanced by doping it with gallium (Ga) and indium (In) metals to investigate the sensing and trapping capabilities of DDVP molecules. The detection of DDVP is carefully examined using first-principles density functional theory (DFT) at the Def2svp/B3LYP-GD3(BJ) level of theory, specifically analyzing the adsorption of DDVP at the chlorine (Cl) and oxygen (O) sites. The adsorption energies at the Cl site were determined as - 57.894 kJ/mol, - 78.107 kJ/mol, and - 99.901 kJ/mol for Cl_DDVP@C60, Cl_DDVP@Ga@C60, and Cl_DDVP@In@C60 interactions, respectively. At the O site, the adsorption energies were found to be - 54.400 kJ/mol, - 114.060 kJ/mol, and - 114.056 kJ/mol for O_DDVP@C60, O_DDVP@Ga@C60, and O_DDVP@In@C60, respectively. The adsorption energy analysis highlights the chemisorption strength between the surfaces and the DDVP molecule at the Cl and O sites of adsorption, indicating that the O adsorption site exhibits higher adsorption energy, which is more favorable according to the thermodynamics analysis. Thermodynamic parameters (∆H and ∆G) obtained from this adsorption site suggest considerable stability and indicate a spontaneous reaction in the order O_DDVP@Ga@C60 > O_DDVP@In@C60 > O_DDVP@C60. These findings demonstrate that the metal-decorated surfaces adsorbed on the oxygen (O) site of the biomolecule offer high sensitivity for detecting the organophosphate molecule DDVP.
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Affiliation(s)
- Michael A Akpe
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Gideon A Okon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria.
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria.
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria.
| | - Martilda U Akem
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Onyebuenyi I Brown
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria
| | - Stephen A Adalikwu
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Adedapo S Adeyinka
- Department of Chemical Sciences, Research Centre for Synthesis and Catalysis, University of Johannesburg, Johannesburg, 2006, South Africa
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Louis H, Mbim EN, Okon GA, Edet UO, Benjamin I, Ejiofor EU, Manicum ALE. Systematic exo-endo encapsulation of hydroxyurea (HU) by Cu, Ag, and Au-doped gallium nitride nanotubes (GaNNT) for smart therapeutic delivery. Comput Biol Med 2023; 161:106934. [PMID: 37257404 DOI: 10.1016/j.compbiomed.2023.106934] [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: 02/09/2023] [Revised: 04/07/2023] [Accepted: 04/13/2023] [Indexed: 06/02/2023]
Abstract
Similar to the more well-known carbon nanotubes, gallium nitride nanotubes (GaNNT) are among the materials that scientists have found to be extremely helpful in transporting drugs and to provide significant potential for multi-modal medical therapies. Here, the potential of Cu, Ag, and Au-doped GaNNT for smart delivery of the anticancer medication hydroxyurea (HU) was extensively investigated employing quantum chemical analysis and density functional theory (DFT) computation at the B3LYP-GD3BJ/def2-SVP level of theory. The systematic approach used in this study entails examining the exo (outside)-and endo (inside) loading of HU utilizing the investigated nanotubes in order to understand the adsorption, sensing processes, bonding types, and thermodynamic properties. Results of the HOMO-LUMO studies show that metal-doped GaNNTs with the hydroxyurea (HU) at the endo - interaction of the drug of the nanotube produced more reduced energy gaps (0.911-2.039 eV) compared with metal-doped GaNNTs complexes at the outside - interaction of the drug on the nanotube (2.25-3.22 eV) and as such reveal their suitability for use as drug delivery materials. As observed in the endo-interaction of HU adsorptions in the tubes, HU_endo_Au@GaNNT possessed the highest adsorption energy values of -118.716 kcal/mol which shows the most chemisorption between the surfaces and the adsorbate while for HU_exo_Ag@GaNNT is -97.431 kcal/mol for the highest exo-interactions. These results suggest that HU drug interacted inside the Ag, Au, and Cu doped GaNNT will be very proficient as a carrier of the HU drug into bio systems. These results are along with visual studies of weak interactions, thermodynamics, sensor, and drug release mechanisms suggest strongly the endo-encapsulation of HU as the best mode for smart drug delivery.
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Affiliation(s)
- Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria; Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria.
| | - Elizabeth N Mbim
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria; Department of Public Health, Arthur Jarvis University, Akpabuyo, Nigeria
| | - Gideon A Okon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria; Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
| | - Uwem O Edet
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria; Department of Microbiology, Arthur Jarvis University, Akpabuyo, Nigeria
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria; Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Nigeria.
| | - Emmanuel U Ejiofor
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria; Department of Chemical Sciences, Clifford University, Owerrinta, Nigeria
| | - Amanda-Lee E Manicum
- Department of Chemistry, Tshwane University of Technology, Pretoria, South Africa
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Agwamba EC, Louis H, Olagoke PO, Gber TE, Okon GA, Fidelis CF, Adeyinka AS. Modeling of magnesium-decorated graphene quantum dot nanostructure for trapping AsH 3, PH 3 and NH 3 gases. RSC Adv 2023; 13:13624-13641. [PMID: 37152564 PMCID: PMC10155676 DOI: 10.1039/d3ra01279d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/18/2023] [Indexed: 05/09/2023] Open
Abstract
A magnesium-decorated graphene quantum dot (C24H12-Mg) surface has been examined theoretically using density functional theory (DFT) computations at the ωB97XD/6-311++G(2p,2d) level of theory to determine its sensing capability toward XH3 gases, where X = As, N and P, in four different phases: gas, benzene solvent, ethanol solvent and water. This research was carried out in different phases in order to predict the best possible phase for the adsorption of the toxic gases. Analysis of the electronic properties shows that in the different phases the energy gap follows the order NH3@C24H12-Mg < PH3@C24H12-Mg < AsH3@C24H12-Mg. The results obtained from the adsorption studies show that all the calculated adsorption energies are negative, indicating that the nature of the adsorption is chemisorption. The adsorption energies can be arranged in an increasing trend of NH3@C24H12-Mg < PH3@C24H12-Mg < AsH3@C24H12-Mg. The best adsorption performance was noted in the gas phase compared to the other studied counterparts. The interaction between the adsorbed gases and the surfaces shows a non-covalent interaction nature, as confirmed by the quantum theory of atoms-in-molecules (QTAIM) and non-covalent interactions (NCI) analysis. The overall results suggest that we can infer that the surface of the magnesium-decorated graphene quantum dot C24H12-Mg is more efficient for sensing the gas AsH3 than PH3 and NH3.
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Affiliation(s)
- Ernest C Agwamba
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Chemistry, Covenant University Otta Nigeria
- Department of Chemical Sciences, University of Johannesburg Johannesburg South Africa
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Praise O Olagoke
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Terkumbur E Gber
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Gideon A Okon
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Chidera F Fidelis
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Adedapo S Adeyinka
- Department of Chemical Sciences, University of Johannesburg Johannesburg South Africa
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15
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Mollaamin F, Monajjemi M. Transition metal (X = Mn, Fe, Co, Ni, Cu, Zn)-doped graphene as gas sensor for CO 2 and NO 2 detection: a molecular modeling framework by DFT perspective. J Mol Model 2023; 29:119. [PMID: 36988725 DOI: 10.1007/s00894-023-05526-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023]
Abstract
CONTEXT In this research, CO2 and NO2 adsorption on doped nanographene (NG) sheets with transition metals (Fe, Ni, Zn) and (Mn, Co, Cu), respectively, have been applied for scavenging of these toxic gases as the environmental pollutants. The values of changes of atomic charge density have illustrated a more significant charge transfer for Ni-doped C-NG through CO2 adsorption and a more remarkable charge transfer for Co-doped C-NG through NO2 adsorption. The data of NMR spectroscopy has depicted several fluctuations around the graph of Zn-doped on the nanographene surface. The thermodynamic results from IR spectroscopy have indicated that [Formula: see text] values are almost similar for doped metal transitions of Mn, Co, and Cu on the C-NG nanosheet, while [Formula: see text] has the largest gap of Gibbs free energy adsorption with dipole moment. METHODS The Langmuir adsorption model with a three-layered ONIOM using CAM-B3LYP functional accompanying LANL2DZ, EPR-III and 6-31 + G (d,p) basis sets due to Gaussian 16 revision C.01 program on the complexes of CO2 → (Fe, Ni, Zn) and NO2 → (Mn, Co, Cu) doped on the C-NG has been accomplished. Then, NMR and IR spectroscopy, nuclear quadrupole resonance, and natural bond orbital analysis have been accomplished for evaluating chemical shielding tensors, thermodynamic properties, electric potential, and occupancy fluctuation through bond orbitals, respectively. In addition, frontier orbitals of LUMO, HOMO, and also a series of chemical reactivity parameters have been calculated. Finally, time-dependent-DFT method due to UV-VIS spectrums has been accomplished to discern the low-lying excited states of CO2 and NO2 adsorption on the (Fe, Ni, Zn) and (Mn, Co, Cu), respectively, doped C-NG sheet.
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Affiliation(s)
- Fatemeh Mollaamin
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey.
| | - Majid Monajjemi
- Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
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16
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Louis H, Amodu IO, Eno EA, Benjamin I, Gber TE, Unimuke TO, Isang BB, Adeyinka AS. Modeling the Interactionof F-gases on Ruthenium-Doped Boron Nitridenanotube. CHEMISTRY AFRICA 2023. [DOI: 10.1007/s42250-023-00645-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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17
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Afahanam LE, Louis H, Benjamin I, Gber TE, Ikot IJ, Manicum ALE. Heteroatom (B, N, P, and S)-Doped Cyclodextrin as a Hydroxyurea (HU) Drug Nanocarrier: A Computational Approach. ACS OMEGA 2023; 8:9861-9872. [PMID: 36969463 PMCID: PMC10035006 DOI: 10.1021/acsomega.2c06630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
Theoretical examination of hydroxyurea adsorption capabilities toward the cyclodextrin surface for proper drug delivery systems was carried out utilizing DFT simulations. The study aims to assess the efficacy of doped cyclodextrin (doped with boron, nitrogen, phosphorus, and sulfur atoms) in increasing its stability and efficiency in intermolecular interactions, hence facilitating optimal drug delivery. The adsorption energies were found to follow a decreasing order of B@ACD-HU>N@ACD-HU>P@ACD-HU>S@ACD-HU with energies of -0.046, -0.0326, -0.015, and 0.944 kcal/mol, respectively. The S@ACD-HU complex, unlike previous systems, had a physical adsorption energy. The N@ACD-HU and B@ACD-HU complexes had the shortest bond lengths of 1.42 Å (N122-C15) and 1.54 Å (B126-C15), respectively. The HOMO and LUMO values were also high in identical systems, -6.367 and -2.918 eV (B@ACD-HU) and -6.278 and -1.736 eV (N@ACD-HU), respectively, confirming no chemical interaction. The N@ACD-HU has the largest energy gap of 4.54 eV. For the QTAIM analysis and plots, the maximum electron density and ellipticity index were detected in B@ACD-HU, 0.600 au (H70-N129) and 0.8685 au (H70-N129), respectively, but N@ACD-HU exhibited a high Laplacian energy of 0.7524 a.u (H133-N122). The fragments' TDOS, OPDOS, and PDOS exhibited a strong bond interaction of greater than 1, and they had different Fermi levels, with the highest value of -8.16 eV in the N@ACD-HU complex. Finally, the NCI analysis revealed that the complexes were noncovalent. According to the literature, the van der Waals form of interactions is used in the intermolecular forces of cyclodextrin cavities. The B@ACD-HU and N@ACD-HU systems were more greenish in color with no spatial interaction. These two systems have outperformed other complexes in intermolecular interactions, resulting in more efficient drug delivery. They had the highest negative adsorption energies, the shortest bond length, the highest HOMO/LUMO energies, the highest energy gap, the highest stabilization energy, the strongest bonding effect, the highest electron density, the highest ellipticity index, and a strong van der Waals interaction that binds the drug and the surface together.
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Affiliation(s)
- Lucy E. Afahanam
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar P.M.B 1115, Nigeria
| | - Hitler Louis
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar P.M.B 1115, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar P.M.B 1115, Nigeria
| | - Innocent Benjamin
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar P.M.B 1115, Nigeria
- Department
of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar P.M.B 1115, Nigeria
| | - Terkumbur E. Gber
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar P.M.B 1115, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar P.M.B 1115, Nigeria
| | - Immaculata J. Ikot
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar P.M.B 1115, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar P.M.B 1115, Nigeria
| | - Amanda-Lee E. Manicum
- Department
of Chemistry, Tshwane University of Technology, Pretoria 0183, South Africa
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Chukwuemeka K, Louis H, Benjamin I, Nyong PA, Ejiofor EU, Eno EA, Manicum ALE. Therapeutic Potential of B 12N 12-X (X = Au, Os, and Pt) Nanostructured as Effective Fluorouracil (5Fu) Drug Delivery Materials. ACS APPLIED BIO MATERIALS 2023; 6:1146-1160. [PMID: 36802290 DOI: 10.1021/acsabm.2c00986] [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] [Indexed: 02/23/2023]
Abstract
In view of the research-substantiated comparative efficiency of nontoxic and bioavailable nanomaterials synergic with human systems for drug delivery, this work was aimed at studying the comparative efficiency of transition metal (Au, Os, and Pt)-decorated B12N12 nanocages in the adsorption of fluorouracil (5Fu), an antimetabolite-classed anticarcinogen administered for cancers of the breast, colon, rectum, and cervix. Three different metal-decorated nanocages interacted with 5Fu drug at the oxygen (O) and fluorine (F) sites, resulting in six adsorbent-adsorbate systems whose reactivity and sensitivity were investigated using density functional theory computation at the B3LYP/def2TZVP level of theory with special emphasis on the structural geometry, electronic, and topology analysis as well as the thermodynamic properties of the systems. While the electronic studies predicted Os@F as having the lowest and most favorable Egp and Ead of 1.3306 eV and -11.9 kcal/mol, respectively, the thermodynamic evaluation showed Pt@F to have the most favorable thermal energy (E), heat capacity (Cp), and entropy (ΔS) values as well as negative ΔH and ΔG while the adsorption studies showed that the greatest degree of chemisorption with Ead magnitude of -204.5023 kcal/mol was observed in energies ranging from -12.0 to 138.4 kcal/mol with Os@F and Au@F at the lower and upper borders. The quantum theory of atoms in molecules results show that the six systems had noncovalent interactions as well as a certain degree of partial covalency but none showed covalent interaction while the noncovalent interaction analysis corroborated this by showing that the six systems had favorable interactions, though of varying degrees, with very little trace of steric hindrance or electrostatic interactions. Overall, the study showed that notwithstanding the good performance of the six adsorbent systems considered, the Pt@F and Os@F showed the most favorable potential for the delivery of 5Fu.
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Affiliation(s)
- Kelechi Chukwuemeka
- Department of Chemical Sciences, Clifford University, Owerrinta 00000, Nigeria
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar 540211, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar 540211, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar 540211, Nigeria
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar 540211, Nigeria
- Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar 540211, Nigeria
| | - Peter A Nyong
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar 540211, Nigeria
| | - Emmanuel U Ejiofor
- Department of Chemical Sciences, Clifford University, Owerrinta 00000, Nigeria
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar 540211, Nigeria
| | - Ededet A Eno
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar 540211, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar 540211, Nigeria
| | - Amanda-Lee E Manicum
- Department of Chemistry, Tshwane University of Technology, Pretoria 0001, South Africa
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19
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Odey DO, Louis H, Ita DK, Edet HO, Ashishie PB, Gber TE, Akinterinwa A, Effa AG. Intermolecular interactions of cytosine DNA nucleoside base with Gallic acid and its Methylgallate and Ethylgallate derivatives. ChemistrySelect 2023. [DOI: 10.1002/slct.202203832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Diana O. Odey
- Department of Biochemistry Cross River University Nigeria
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry University of Calabar Calabar Nigeria
| | - Dollars K. Ita
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry University of Calabar Calabar Nigeria
| | - Henry O. Edet
- Department of Biochemistry Cross River University Nigeria
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
| | - Providence B. Ashishie
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry University of Calabar Calabar Nigeria
| | - Terkumbur E. Gber
- Department of Biochemistry Cross River University Nigeria
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
| | - Ayodele Akinterinwa
- Department of Pure and Applied Chemistry University of Calabar Calabar Nigeria
| | - Anagbogu G. Effa
- Department of Pure and Applied Chemistry University of Calabar Calabar Nigeria
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20
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Gannouni A, Louis H, Roisnel T, Isang BB, Benjamin I, Kefi R. X-Ray Crystallography, Spectral Analysis, DFT Studies, and Molecular Docking of (C 9H 15N 3)[CdCl 4] Hybrid Material against Methicillin-Resistant Staphylococcus aureus (MRSA). Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2169721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- Afef Gannouni
- Faculté Des Sciences De Bizerte, Laboratoire de Chimie Des Matériaux, Zarzouna, Tunisie
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Thierry Roisnel
- Centre de Diffractométrie X, UMR 6226 CNRS, Institut Sciences Chimiques De Rennes, Université De Rennes I, Rennes, France
| | - Bartholomew B. Isang
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Mathematics, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria
| | - Riadh Kefi
- Faculté Des Sciences De Bizerte, Laboratoire de Chimie Des Matériaux, Zarzouna, Tunisie
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21
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Ntui TN, Louis H, Isang BB, Imojara A, Amodu IO, Benjamin I, Akinterinwa A, Adeyinka AS. Trapping of dichlorosilane (H2SiCl2) gas by transition metals doped fullerene nanostructured materials. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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22
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Louis H, Chima CM, Amodu IO, Gber TE, Unimuke TO, Adeyinka AS. Organochlorine detection on transition metals (X=Zn, Ti, Ni, Fe, and Cr) anchored fullerenes (C
23
X). ChemistrySelect 2023. [DOI: 10.1002/slct.202203843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Hitler Louis
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry Faculty of Physical Sciences University of Calabar Calabar Nigeria
| | - Chioma M. Chima
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry Faculty of Physical Sciences University of Calabar Calabar Nigeria
| | - Ismail O. Amodu
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Mathematics Faculty of Physical Sciences University of Calabar Calabar Nigeria
| | - Terkumbur E. Gber
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry Faculty of Physical Sciences University of Calabar Calabar Nigeria
| | - Tomsmith O. Unimuke
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry Faculty of Physical Sciences University of Calabar Calabar Nigeria
| | - Adedapo S. Adeyinka
- Department of Chemical Sciences University of Johannesburg Johannesburg South Africa
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23
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Benjamin I, Louis H, O. Ekpen F, Gber TE, Gideon ME, Ahmad I, Unimuke TO, P. Akanimo N, Patel H, Eko IJ, Simon O, Agwamba EC, Ejiofor EU. Modeling the anti-Methicillin-Resistant Staphylococcus aureus (MRSA) Activity of (E)-6-chloro-N 2-phenyl-N 4-(4-Phenyl-5-(Phenyl Diazinyl)-2λ 3, 3 λ 2- Thiazol-2-yl)-1, 3, 5-Triazine-2,4- Diamine. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2160773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Innocent Benjamin
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Francis O. Ekpen
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Terkumbur E. Gber
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Mathias E. Gideon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Iqrar Ahmad
- Division of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel; Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Tomsmith O. Unimuke
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria
| | - Nyong P. Akanimo
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Harun Patel
- Division of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel; Institute of Pharmaceutical Education and Research, Shirpur, India
| | | | - Ojima Simon
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Ernest C. Agwamba
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Emmanuel U. Ejiofor
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
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Adalikwu SA, Louis H, Iloanya AC, Edet HO, Akem MU, Eno EA, Manicum ALE. B- and Al-Doped Porous 2D Covalent Organic Frameworks as Nanocarriers for Biguanides and Metformin Drugs. ACS APPLIED BIO MATERIALS 2022; 5:5887-5900. [PMID: 36413624 DOI: 10.1021/acsabm.2c00855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Nanostructures such as nanosheets, nanotubes, nanocages, and fullerenes have been extensively studied as potential candidates in various fields since the advancement of nanoscience. Herein, the interaction between biguanides (BGN) and metformin (MET) on the modified covalent organic framework (COF), COF-B, and COF-Al was investigated using density functional theory at the ωB97XD/6-311+G (d, p) level of computation to explore a new drug delivery system. The electronic properties evaluation reveals that the studied surfaces are suited for the delivery of both drug molecules. The calculated adsorption energies and basis set superposition errors (BSSE) ranged between -21.20 and -65.86 kJ/mol. The negative values obtained are an indication of excellent interaction between the drug molecules and the COF surfaces. Moreover, BGN is better adsorbed on COF-B with Eads of -65.86 kJ/mol, while MET is better adsorbed on COF-Al with Eads = -47.30 kJ/mol. The analysis of the quantum theory of atom in molecules (QTAIM) explained the nature and strength of intermolecular interaction existing between the drug molecules BGN and MET with the adsorbing surfaces. The analysis of noncovalent interaction (NCI) shows a weak hydrogen-bond interaction. Other properties such as quantum chemical descriptors and natural bond orbital (NBO) analysis also agree with the potential of COF surfaces as drug delivery systems. The electron localization function (ELF) is discussed, and it confirms the transitions occurring in the NBO analysis of the complexes. In conclusion, COF-B and COF-Al are suitable candidates for the effective delivery of BGN and MET.
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Affiliation(s)
- Stephen A Adalikwu
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B1115, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B1115, Nigeria.,Department of Pure and Applied Chemistry, University of Calabar, Calabar, P.M.B1115, Nigeria
| | - Anthony C Iloanya
- Department of Physics, Lehigh University, Bethlehem, Pennsylvania18015, United States
| | - Henry O Edet
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B1115, Nigeria
| | - Martilda U Akem
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B1115, Nigeria.,Department of Pure and Applied Chemistry, University of Calabar, Calabar, P.M.B1115, Nigeria
| | - Ededet A Eno
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B1115, Nigeria.,Department of Pure and Applied Chemistry, University of Calabar, Calabar, P.M.B1115, Nigeria
| | - Amanda-Lee E Manicum
- Department of Chemistry, Tshwane University of Technology, Pretoria0183, South Africa
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25
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Ntui TN, Oyo-Ita EE, Agwupuye JA, Benjamin I, Eko IJ, Ubana EI, Etiowo KM, Eluwa EC, Imojara A. Synthesis, Spectroscopic, DFT Study, and Molecular Modeling of Thiophene-Carbonitrile Against Enoyl-ACP Reductase Receptor. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00544-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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26
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Spectroscopic, DFT study, and molecular docking investigation of N-(3-methylcyclohexyl)-2-phenylcyclopropane-1-carbohydrazide as a potential antimicrobial drug. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Nkoe P, Manicum ALE, Louis H, Malan FP, Nzondomyo WJ, Chukwuemeka K, Sithole SA, Imojara A, Chima CM, Agwamba EC, Unimuke TO. Influence of solvation on the spectral, molecular structure, and antileukemic activity of 1-benzyl-3-hydroxy-2-methylpyridin-4(1H)-one. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Apebende CG, Louis H, Owen AE, Benjamin I, Amodu IO, Gber TE, Asogwa FC. Adsorption properties of metal functionalized fullerene (C 59Au, C 59Hf, C 59Ag, and C 59Ir) nanoclusters for application as a biosensor for hydroxyurea (HXU): insight from theoretical computation. Z PHYS CHEM 2022. [DOI: 10.1515/zpch-2022-0126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
This theoretical study was conducted to evaluate the efficiency of fullerene C60 and its metal functionalized nano clusters (C59Au, C59Hf, C59Ag and C59Ir) as a sensor for hydroxyurea (HXU). The various conclusions concerning the adsorption and sensing properties of the studied nano surfaces were achieved using density functional theory (DFT) at the M062X-D3/gen/LanL2DZ/def2svp level of theory. Among the nano clusters studied for this interaction, analysis of the HOMO–LUMO energy differences (E
g) showed that HXU@C59Hg (H2) reflects the least energy gap of 3.042 eV, indicating its greater reactivity, sensitivity and conductivity. Also, the adsorption phenomenon in this current study is best described as chemisorptions owing to the negative adsorption enthalpies observed. Thus, the adsorption energy (E
Ad) follows an increasing pattern of: HXU@C60 (C1) (−0.218 eV) < HXU@C59Ir (I1) (−1.361 eV) < HXU@C59Au (A1) (−1.986 eV) < HXU@C59Hf (H1) (−2.640 eV) < HXU@C59Hg (H2) (−3.347 eV). Least E
g, highest E
Ad and non-covalent nature of interaction attributed to C59Hg surface are sufficient to show that, among all studied surfaces, C59Hg surface emerged as the most suitable adsorbent for the adsorption of HXU. Hence, it can be used in modeling future adsorbent material for hydroxyurea.
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Affiliation(s)
- Chioma G. Apebende
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences , University of Calabar , Calabar , Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences , University of Calabar , Calabar , Nigeria
| | - Aniekan E. Owen
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
| | - Innocent Benjamin
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
- Department of Microbiology, Faculty of Biological Sciences , University of Calabar , Calabar , Nigeria
| | - Ismail O. Amodu
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
- Department of Mathematics, Faculty of Physical Sciences , University of Calabar , Calabar , Nigeria
| | - Terkumbur E. Gber
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences , University of Calabar , Calabar , Nigeria
| | - Fredrick C. Asogwa
- Computational and Bio-Simulation Research Group , University of Calabar , Calabar , Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences , University of Calabar , Calabar , Nigeria
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29
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Louis H, Etiese D, Unimuke TO, Owen AE, Rajee AO, Gber TE, Chima CM, Eno EA, Nfor EN. Computational design and molecular modeling of the interaction of nicotinic acid hydrazide nickel-based complexes with H 2S gas. RSC Adv 2022; 12:30365-30380. [PMID: 36337983 PMCID: PMC9590404 DOI: 10.1039/d2ra05456f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 10/10/2022] [Indexed: 01/14/2023] Open
Abstract
The application of nickel complexes of nicotinic acid hydrazide ligand as a potential gas-sensor and adsorbent material for H2S gas was examined using appropriate density functional theory (DFT) calculations with the ωB97XD/Gen/6-311++G(d,p)/LanL2DZ method. The FT-IR spectrum of the synthesized ligand exhibited a medium band at 3178 cm-1 attributed to ν(NH) stretching vibrations and strong bands at 1657 and 1600 cm-1 corresponding to the presence of ν(C[double bond, length as m-dash]O) and ν(C[double bond, length as m-dash]N) vibration modes. In the spectrum of the nickel(ii) complex, the ν(C[double bond, length as m-dash]O) and ν(C[double bond, length as m-dash]N) vibration bands experience negative shifts to 1605 cm-1 and 1580 cm-1, respectively, compared to the ligand. This indicates the coordination of the carbonyl oxygen and the azomethine nitrogen atoms to the Ni2+ ion. Thus, the sensing mechanism of the complexes indicated a short recovery time and that the work function value increases for all complexes, necessitating an excellent H2S gas sensor material. Thus, a profound assertion was given that the complex sensor surfaces exhibited very dense stability with regards to their relevant binding energies corresponding to various existing studies.
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Affiliation(s)
- Hitler Louis
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of CalabarCalabarNigeria
| | - Daniel Etiese
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of CalabarCalabarNigeria
| | - Tomsmith O. Unimuke
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of CalabarCalabarNigeria
| | - Aniekan E. Owen
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Chemistry, Akwa-Ibom State UniversityUyoNigeria
| | | | - Terkumbur E. Gber
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of CalabarCalabarNigeria
| | - Chioma M. Chima
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of CalabarCalabarNigeria
| | - Ededet A. Eno
- Computational and Bio-Simulation Research Group, University of CalabarCalabarNigeria,Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of CalabarCalabarNigeria
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