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DFT analysis and in vitro studies of isoxazole derivatives as potent antioxidant and antibacterial agents synthesized via one-pot methodology. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04910-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Novel Set of Highly Substituted Bis-pyridines: Synthesis, Molecular Docking and Drug-Resistant Antibacterial Profile. Future Med Chem 2022; 14:1881-1897. [PMID: 36420816 DOI: 10.4155/fmc-2022-0196] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aims: Development of antimicrobial agents having the ability to prevent bacterial biofilm formation which causes serious health problems, especially with antibiotic-resistant bacterial strains. Materials and methods: The use of 1,3-diaryl enones as structural motifs to access the pyridine core. Antimicrobial activities of the synthesized compounds against methicillin-susceptible Staphylococcus aureus, methicillin-resistant S. aureus and vancomycin-resistant S. aureus bacterial strains were investigated. Results: The newly synthesized bis-enones were used as building blocks to access some novel highly substituted bis-pyridine derivatives. Several novel bis-compounds showed great bacterial biofilm eradication activity. Conclusion: A new series of bis-chalcones was synthesized and their structural diversity was exploited to access the corresponding, more biologically active, pyridine core. These bis-pyridines showed respectable antibacterial activities against various drug-resistant bacterial strains: namely, methicillin-susceptible, methicillin-resistant and vancomycin-resistant S. aureus.
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Saad H, El-Dien FAN, El-Gamel NEA, Abo Dena AS. Azo-functionalized superparamagnetic Fe 3O 4 nanoparticles: an efficient adsorbent for the removal of bromocresol green from contaminated water. RSC Adv 2022; 12:25487-25499. [PMID: 36199338 PMCID: PMC9450110 DOI: 10.1039/d2ra03476j] [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: 06/04/2022] [Accepted: 08/30/2022] [Indexed: 11/23/2022] Open
Abstract
Water contamination is regarded as one of the world's worst tragedies owing to the continual depletion of water resources suitable for drinking and agriculture. Researchers have recently been interested in developing novel and more effective adsorbents for wastewater purification. We report herein a magnetic adsorbent nanomaterial for the removal of the anionic dye bromocresol green (BCG) from wastewater. The adsorbent is based on superparamagnetic iron oxide (cubic Fe3O4) nanoparticles (SPIONs) coated with a high-molecular-weight azo dye synthesized via diazo coupling of vitamin B1 with a trisubstituted benzene derivative. The proposed adsorbent was characterized using scanning electron microscopy, FTIR and 1H-NMR spectroscopy, mass spectrometry, dynamic light scattering, vibrating sample magnetometry, thermal analysis, and X-ray diffraction crystallography. At room temperature and pH 2.0, the synthesized adsorbent showed an average particle size of 65.9 ± 8.0 nm, a high magnetization saturation (65.58 emu g−1), a high equilibrium adsorption capacity (36.91 mg g−1). Adsorption of BCG was found to take place via a physisorption mechanism and followed a pseudo-second-order rate kinetics. Thermodynamic studies revealed that the adsorption process is enthalpy driven by hydrogen bonding and/or van der Waals interactions. After treating water samples with the suggested adsorbent, it can be easily removed from water using a strong external magnetic field. An efficient adsorbent based on azo-dye-coated superparamagnetic Fe3O4 nanoparticles was synthesized for the removal of the anionic dye, bromocresol green, from wastewater.![]()
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Affiliation(s)
- Hadeel Saad
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- General Organization for Export and Import Control, Ramses Street, Cairo, Egypt
| | - F. A. Nour El-Dien
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | | | - Ahmed S. Abo Dena
- Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
- Faculty of Oral and Dental Medicine, Future University in Egypt (FUE), New Cairo, Egypt
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Khalil NK, Abo Dena AS, El-Sherbiny IM. Boosting the mechanical strength and solubility-enhancement properties of hydroxypropyl-β-cyclodextrin nanofibrous films. Drug Dev Ind Pharm 2021; 47:1413-1423. [PMID: 34735303 DOI: 10.1080/03639045.2021.1995407] [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: 10/19/2022]
Abstract
2-hydroxypropyl-β-cyclodextrin (HPβCD) nanofiber films have high surface-to-volume ratio and show high dissolution rate of hydrophobic drugs. However, the solubility-enhancement effect of HPβCD films may not be enough to include an effective dose in a sublingually administrable film. Moreover, unmodified HPβCD films are very brittle and difficultly transported and/or handled. So, the addition of polyethylene glycol (PEG) as a plasticizer was suggested to improve their ultimate tensile strength (UTS) and solubilization of hydrophobic drugs. Accordingly, six nanofiber films were developed and characterized, using three molecular weights of PEG (400, 1500 and 6000 Da) with two concentrations each (1:100 and 2:100 PEG:HPβCD), in addition to the unmodified HPβCD nanofibrous film. The results revealed that adding 1:100 of PEG 400 increases the UTS (∼2-fold) and the average fiber diameter (AFD) (∼3-fold). Moreover, the addition of PEG 400 significantly increased the solubility of two hydrophobic model drugs; coumarin (up to 7.7-fold of the original solubility) and 2-nitroimidazole (up to 1.6-fold of the original solubility). However, with higher PEG concentration/molecular weight, both AFD and UTS of the films decreased. On the other hand, it was noted that the solubility of the two model drugs decreased upon using 1500-Da PEG, and then increased with 6000-Da PEG.
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Affiliation(s)
- Noha K Khalil
- Nanomedicine Laboratory, Center for Materials Science, Zewail City of Science and Technology, Giza, Egypt
| | - Ahmed S Abo Dena
- Nanomedicine Laboratory, Center for Materials Science, Zewail City of Science and Technology, Giza, Egypt.,Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
| | - Ibrahim M El-Sherbiny
- Nanomedicine Laboratory, Center for Materials Science, Zewail City of Science and Technology, Giza, Egypt
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Kassab RM, Gomha SM, Al-Hussain SA, Abo Dena AS, Abdel-Aziz MM, Zaki ME, Muhammad ZA. Synthesis and In-silico Simulation of Some New Bis-thiazole Derivatives and Their Preliminary Antimicrobial Profile: Investigation of Hydrazonoyl Chloride Addition to Hydroxy-Functionalized Bis-carbazones. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103396] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Abu-Melha S, Muhammad ZA, Abouzid AS, Edrees MM, Abo Dena AS, Nabil S, Gomha SM. Multicomponent synthesis, DFT calculations and molecular docking studies of novel thiazolyl-pyridazinones as potential antimicrobial agents against antibiotic-resistant bacteria. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Shair AS, Dena ASA, El-Sherbiny IM. Matrix-dispersed PEI-coated SPIONs for fast and efficient removal of anionic dyes from textile wastewater samples: Applications to triphenylmethanes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119301. [PMID: 33348092 DOI: 10.1016/j.saa.2020.119301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/21/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
Textile industries produce a massive amount of wastewater that should be cleaned from toxic substances such as fats, colors and any chemicals used during the production steps. Water-treatment methods should be facile, economic, fast and efficient. Here, we report the synthesis, characterization and application of matrix-dispersed superparamagnetic iron oxide nanoparticles (SPIONs) for the removal of anionic dyes from wastewater released from textile industrial plants. The matrix-dispersed SPIONs were synthesized via a solvothermal method in which a polyethyleneimine (PEI) shell was deposited onto SPIONs in order to add positive charges to their surfaces. TEM images revealed that the size of PEI-coated and uncoated SPIONs is 30-50 and 15-30 nm, respectively. Moreover, TEM images depicted that the as synthesized PEI-coated SPIONs show matrix-dispersed structures. Furthermore, the particle size obtained with DLS measurements was found to be 87.93 and 158.9 nm for uncoated and PEI-coated SPIONs, respectively. Bromophenol blue (BPB) and bromocresol green (BCG), two triphenylmethanes, were used as model anionic dyes. FTIR spectroscopy revealed the interaction between the PEI surface coating and the anionic dyes. The apparent ζ-potential measurements showed that the surface negative charges decreased from -13.5 to -4.03 mV upon coating with PEI. In order to investigate the anionic dyes removal/entrapment efficiency of SPIONs, a new derivative visible spectrophotometric method was developed for the simultaneous quantification of BPB and BCG before and after treatment where the linear ranges were 6.98-27.9 and 6.70-26.8 μg/mL and the recovery values were in the ranges of 98.10-101.7% and 99.55-104.8% for BCG and BPB, respectively. It was found that the uptake/adsorption capacity of PEI-coated SPIONs is ca.15.5 and 11.3 mg/g for BCG and BPB, respectively. The calculated thermodynamic parameters for the adsorption of BCG (ΔH = 37.08 J/mol and ΔS = 120.89 J/mol K) and BPB (ΔH = 181.26 J/mol and ΔS = 596.46 J/mol K) and the negative ΔG values indicate that the adsorption is thermodynamically favored. The adsorption processes were found to follow the pseudo-second-order kinetic model with r2 values of 0.9982 and 0.9956 for BCG and BPB, respectively.
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Affiliation(s)
- Alaa S Shair
- Center for Materials Science, Zewail City of Science and Technology, 6 of October City, Giza 12578, Egypt
| | - Ahmed S Abo Dena
- Center for Materials Science, Zewail City of Science and Technology, 6 of October City, Giza 12578, Egypt; Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
| | - Ibrahim M El-Sherbiny
- Center for Materials Science, Zewail City of Science and Technology, 6 of October City, Giza 12578, Egypt.
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Abo Dena AS, Khalid SA, Ghanem AF, Shehata AI, El-Sherbiny IM. User-friendly lab-on-paper optical sensor for the rapid detection of bacterial spoilage in packaged meat products. RSC Adv 2021; 11:35165-35173. [PMID: 35493139 PMCID: PMC9043016 DOI: 10.1039/d1ra06321a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/23/2021] [Indexed: 11/21/2022] Open
Abstract
A lab-on-paper colorimetric sensor for detection and quantification of bacterial meat spoilage is reported.
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Affiliation(s)
- Ahmed S. Abo Dena
- Nanomedicine Laboratory, Centre for Materials Science, Zewail City of Science and Technology, 6th of October, Giza, Egypt
- Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
| | - Shaimaa A. Khalid
- Nanomedicine Laboratory, Centre for Materials Science, Zewail City of Science and Technology, 6th of October, Giza, Egypt
- Food Hygiene Department, Animal Health Research Institute (AHRI), Agricultural Research Center, Giza, Egypt
| | - Ahmed F. Ghanem
- Packaging Materials Department, National Research Center, 33 El Bohouth St. (former El Tahrir st.) Dokki, Giza, P.O. 12622, Egypt
| | - Ahmed Ibrahim Shehata
- Nanomedicine Laboratory, Centre for Materials Science, Zewail City of Science and Technology, 6th of October, Giza, Egypt
| | - Ibrahim M. El-Sherbiny
- Nanomedicine Laboratory, Centre for Materials Science, Zewail City of Science and Technology, 6th of October, Giza, Egypt
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Mohamed SH, Issa YM, Elfeky SA, Ahmed AA, Abdelkader NS. Spectroscopic, thermogravimetric studies and DFT calculations of pentoxyverine citrate ion-pairs with sulfonephthalein dyes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Spectroscopic, DFT studies and electronic properties of novel functionalized bis-1,3,4-thiadiazoles. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00833-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Slate AJ, Brownson DAC, Abo Dena AS, Smith GC, Whitehead KA, Banks CE. Exploring the electrochemical performance of graphite and graphene paste electrodes composed of varying lateral flake sizes. Phys Chem Chem Phys 2018; 20:20010-20022. [PMID: 30022207 DOI: 10.1039/c8cp02196a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the fabrication, characterisation (SEM/EDX, TEM, XRD, XPS and Raman spectroscopy) and electrochemical properties of graphite and graphene paste electrodes with varying lateral flake sizes. The fabricated paste electrodes are electrochemically analysed using both outer-sphere and inner-sphere redox probes, namely; hexaammineruthenium(iii) chloride, N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD), potassium ferrocyanide(ii) and ammonium ferrous(ii) sulphate. Upon comparison of different graphite paste electrodes, a clear correlation between the lateral flake sizes (La), ranging from 1.5 mm-0.5 μm, and electrochemical activity (heterogeneous electron transfer (HET) kinetics) is evident, where an improvement in the HET is observed at smaller lateral flake sizes. We infer that the beneficial response evident when employing laterally smaller flakes is due to an increased number of edge plane like-sites/defects available upon the electrode surface, facilitating electron transfer. Interestingly, given that the overall lateral flake sizes of the graphenes utilised (10.0-1.3 μm) were significantly smaller than those studied previously, an improvement in HET kinetics was also evident with the reduction of lateral flake size; the extent to which is redox-probe dependent. Improvements are observed up to a distinct point, termed the 'lateral size threshold' (ca. ≤2 μm) where the electrochemical reversible limit is approached. Further support is provided from density functional theory (DFT), exploring the electronic structure (i.e. HOMO-LUMO) as a function of flake size, which demonstrates that the coverage of edge plane like-sites/defects comprising the geometric structure of the relatively small graphene flakes is such that effectively the entire flake has become electrochemically active. In this study, the importance of lateral flake size with respect to electrochemical reactivity at carbon-based electrodes has been demonstrated alongside a structural relationship upon HET performance, a phenomenon that has not previously been described in the literature. Such work is both highly important and informative for the field of electrochemistry and electrode performance, with potential implications in a plethora of areas, ranging from novel renewable energy sources to electroanalytical sensing platforms.
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Affiliation(s)
- Anthony J Slate
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD, UK.
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Abo Dena AS, Abdel Gaber SA. In vitro drug interaction of levocetirizine and diclofenac: Theoretical and spectroscopic studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 181:239-248. [PMID: 28371723 DOI: 10.1016/j.saa.2017.03.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/14/2017] [Accepted: 03/17/2017] [Indexed: 06/07/2023]
Abstract
Levocetirizine dihydrochloride is known to interact with some anti-inflammatory drugs. We report here a comprehensive integrated theoretical and experimental study for the in vitro drug interaction between levocetirizine dihydrochloride (LEV) and diclofenac sodium (DIC). The interaction of the two drugs was confirmed by the molecular ion peak obtained from the mass spectrum of the product. Moreover, FTIR and 1HNMR spectra of the individual drugs and their interaction product were inspected to allocate the possible sites of interaction. In addition, quantum mechanical DFT calculations were performed to search for the interaction sites and to verify the types of interactions deduced from the spectroscopic studies such as charge-transfer and non-bonding π-π interactions. It was found that the studied drugs interact with each other in aqueous solution via four types of interactions, namely, ion-pair formation, three weak hydrogen bonds, non-bonding π-π interactions and charge-transfer from DIC to LEV.
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Affiliation(s)
- Ahmed S Abo Dena
- National Organization for Drug Control and Research (NODCAR), P.O. Box 29, Giza, Egypt; Faculty of Oral and Dental Medicine, Future University in Egypt (FUE), New Cairo, Egypt.
| | - Sara A Abdel Gaber
- Faculty of Pharmacy and Biotechnology, German University in Cairo (GUC), New Cairo, Egypt
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