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Milusheva M, Stoyanova M, Gledacheva V, Stefanova I, Todorova M, Pencheva M, Stojnova K, Tsoneva S, Nedialkov P, Nikolova S. 2-Amino- N-Phenethylbenzamides for Irritable Bowel Syndrome Treatment. Molecules 2024; 29:3375. [PMID: 39064953 PMCID: PMC11280360 DOI: 10.3390/molecules29143375] [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: 06/14/2024] [Revised: 07/15/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Irritable bowel syndrome (IBS) is a common gastrointestinal (GI) disorder characterized by abdominal pain or discomfort. Mebeverine is an antispasmodic that has been widely used in clinical practice to relieve the symptoms of IBS. However, its systemic use usually leads to side effects. Therefore, the current paper aimed to synthesize more effective medicines for IBS treatment. We used ring opening of isatoic anhydride for the synthesis in reaction with 2-phenylethylamine. In silico simulation predicted spasmolytic activity for 2-amino-N-phenethylbenzamides. The newly synthesized compounds demonstrated a relaxation effect similar to mebeverine but did not affect the serotonin or Ca2+-dependent signaling pathway of contractile activity (CA) in contrast. Having in mind the anti-inflammatory potential of antispasmodics, the synthesized molecules were tested in vitro and ex vivo for their anti-inflammatory effects. Four of the newly synthesized compounds demonstrated very good activity by preventing albumin denaturation compared to anti-inflammatory drugs/agents well-established in medicinal practice. The newly synthesized compounds also inhibited the expression of interleukin-1β and stimulated the expression of neuronal nitric oxide synthase (nNOS), and, consequently, nitric oxide (NO) synthesis by neurons of the myenteric plexus. This characterizes the newly synthesized compounds as biologically active relaxants, offering a cleaner and more precise application in pharmacological practice, thereby enhancing their potential therapeutic value.
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Affiliation(s)
- Miglena Milusheva
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.S.); (M.T.)
- Department of Bioorganic Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Mihaela Stoyanova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.S.); (M.T.)
| | - Vera Gledacheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.); (M.P.)
| | - Iliyana Stefanova
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.); (M.P.)
| | - Mina Todorova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.S.); (M.T.)
| | - Mina Pencheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.); (M.P.)
| | - Kirila Stojnova
- Department of General and Inorganic Chemistry with Methodology of Chemistry Education, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Slava Tsoneva
- Department of Analytical Chemistry and Computer Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Paraskev Nedialkov
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria;
| | - Stoyanka Nikolova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.S.); (M.T.)
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Milusheva M, Stoyanova M, Gledacheva V, Stefanova I, Todorova M, Nikolova S. Spasmolytic Activity of 1,3-Disubstituted 3,4-Dihydroisoquinolines. Biomedicines 2024; 12:1556. [PMID: 39062129 PMCID: PMC11275145 DOI: 10.3390/biomedicines12071556] [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: 06/09/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
This article concerns the spasmolytic activities of some novel 1,3-disubstituted 3,4-dihydroisoquinolines. These compounds can be evaluated as potential therapeutic candidates according to Lipinski's rule of five, showing high gastrointestinal absorption and the ability to cross the blood-brain barrier, which is a very important parameter in the drug discovery processes. In silico simulation predicted smooth muscle relaxant activity for all the compounds. Since smooth muscle contractile failure is a characteristic feature of many disorders, in the current paper, we concentrate on the parameters of the spontaneous contractile responses of smooth muscle (SM) cells compared to the well-known drug mebeverine. Two of the newly synthesized substances can be identified as essential modulating regulators and potentially used as therapeutic molecules. One of these molecules also showed significant DPPH antioxidant activity compared to rutin.
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Affiliation(s)
- Miglena Milusheva
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria (M.S.); (M.T.)
- Department of Bioorganic Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Mihaela Stoyanova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria (M.S.); (M.T.)
| | - Vera Gledacheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.)
| | - Iliyana Stefanova
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.)
| | - Mina Todorova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria (M.S.); (M.T.)
| | - Stoyanka Nikolova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria (M.S.); (M.T.)
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Gerasimova A, Nikolova K, Petkova N, Ivanov I, Dincheva I, Tumbarski Y, Yanakieva V, Todorova M, Gentscheva G, Gavrilova A, Yotkovska I, Nikolova S, Slavov P, Harbaliev N. Metabolic Profile of Leaves and Pulp of Passiflora caerulea L. (Bulgaria) and Their Biological Activities. PLANTS (BASEL, SWITZERLAND) 2024; 13:1731. [PMID: 38999571 PMCID: PMC11243431 DOI: 10.3390/plants13131731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/09/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024]
Abstract
At present, there are no data in the scientific literature on studies aimed at characterizing Passiflora caerulea L. growing in Bulgaria. The present study aimed to investigate the metabolic profile and elemental composition of the leaves and pulp of this Passiflora, as well as to evaluate the antioxidant, antimicrobial and anti-inflammatory activities of its leaf and pulp extracts. The results showed that the pulp predominantly contained the essential amino acid histidine (7.81 mg g-1), while it was absent in the leaves, with the highest concentration being tryptophan (8.30 mg g-1). Of the fatty acids, palmitoleic acid predominated both in the pulp and in the leaves. A major sterol component was β-sitosterol. Fructose (7.50%) was the predominant sugar in the pulp, while for the leaves, it was glucose-1.51%. Seven elements were identified: sodium, potassium, iron, magnesium, manganese, copper and zinc. The highest concentrations of K and Mg were in the pulp (23,946 mg kg-1 and 1890 mg kg-1) and leaves (36,179 mg kg-1 and 5064 mg kg-1). According to the DPPH, FRAP and CUPRAC methods, the highest values for antioxidant activity were found in 70% ethanolic extracts of the leaves, while for the ABTS method, the highest value was found in 50% ethanolic extracts. In the pulp, for all four methods, the highest values were determined at 50% ethanolic extracts. Regarding the antibacterial activity, the 50% ethanolic leaf extracts were more effective against the Gram-positive bacteria. At the same time, the 70% ethanolic leaf extract was more effective against Gram-negative bacteria such as Salmonella enteritidis ATCC 13076. The leaf extracts exhibited higher anti-inflammatory activity than the extracts prepared from the pulp. The obtained results revealed that P. caerulea is a plant that can be successfully applied as an active ingredient in various nutritional supplements or cosmetic products.
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Affiliation(s)
- Anelia Gerasimova
- Department of Chemistry, Faculty of Pharmacy, Medical University—Varna, 9000 Varna, Bulgaria;
| | - Krastena Nikolova
- Department of Physics and Biophysics, Faculty of Pharmacy, Medical University—Varna, 9000 Varna, Bulgaria
| | - Nadezhda Petkova
- Department of Organic Chemistry and Inorganic Chemistry, University of Food Technologies, 4002 Plovdiv, Bulgaria; (N.P.); (I.I.)
| | - Ivan Ivanov
- Department of Organic Chemistry and Inorganic Chemistry, University of Food Technologies, 4002 Plovdiv, Bulgaria; (N.P.); (I.I.)
| | - Ivayla Dincheva
- Department of Agrobiotechnologies, Agrobioinstitute, Agricultural Academy, 1164 Sofia, Bulgaria;
| | - Yulian Tumbarski
- Department of Microbiology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (Y.T.); (V.Y.)
| | - Velichka Yanakieva
- Department of Microbiology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (Y.T.); (V.Y.)
| | - Mina Todorova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria; (M.T.); (S.N.)
| | - Galia Gentscheva
- Department of Chemistry and Biochemistry, Medical University—Pleven, 5800 Pleven, Bulgaria;
| | - Anna Gavrilova
- Department of Pharmaceutical Chemistry and Pharmacognosy, Medical University—Pleven, 5800 Pleven, Bulgaria;
| | - Ina Yotkovska
- Department of Chemistry and Biochemistry, Medical University—Pleven, 5800 Pleven, Bulgaria;
| | - Stoyanka Nikolova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria; (M.T.); (S.N.)
| | - Pavlo Slavov
- Faculty of Medicine, Medical University—Varna, 9000 Varna, Bulgaria; (P.S.); (N.H.)
| | - Nikolay Harbaliev
- Faculty of Medicine, Medical University—Varna, 9000 Varna, Bulgaria; (P.S.); (N.H.)
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Jiang M, Wu R, Liu D, Wang X. Utilizing Ni(II) complex for metal drug-gel particles in cervical cancer treatment and designing novel drugs through machine learning methods. Sci Rep 2024; 14:5421. [PMID: 38443412 PMCID: PMC10914818 DOI: 10.1038/s41598-024-55897-7] [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: 12/13/2023] [Accepted: 02/28/2024] [Indexed: 03/07/2024] Open
Abstract
In the present study, a novel coordination polymer (CP) based on Ni(II), namely, [Ni(L)(D-CAM)(H2O)]n (1) (H2D-CAM = (1R,3S)-1,2,2-trimethylcyclopentane-1,3-dicarboxylic acid and L = 3,6-bis(benzimidazol-1-yl)pyridazine), has been produced successfully through applying a mixed ligand synthesis method via reacting Ni(NO3)2·6H2O with 3,6-bis(benzimidazol-1-yl)pyridazine ligand in the presence of a carboxylic acid co-ligand. Hyaluronic acid (HA) and carboxymethyl chitosan (CMCS) are representatives of natural polysaccharides and have good biocompatibility. Based on the chemical synthesis method, HA/CMCS hydrogel was successfully prepared. SEM showed that the lyophilized gel presented a typical macroporous structure with three-dimensional connected pores, which had unique advantages as a drug carrier. Using paclitaxel as a drug model, we further synthesized a novel paclitaxel-loaded metal gel and evaluated its therapeutic effect on cervical cancer. Finally, novel drugs from the reinforcement learning simulation are suggested to have better biological activity against ovarian cancer due to low affinity energy and stronger interaction strength towards the protein receptor.
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Affiliation(s)
- Meiping Jiang
- Departments of Radiotherapy, Tumor Hospital of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ruiping Wu
- Departments of Radiotherapy, Tumor Hospital of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Dongqin Liu
- Departments of Radiotherapy, Tumor Hospital of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xiaoli Wang
- Departments of Radiotherapy, Tumor Hospital of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
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Zinatloo-Ajabshir S, Rakhshani S, Mehrabadi Z, Farsadrooh M, Feizi-Dehnayebi M, Rakhshani S, Dušek M, Eigner V, Rtimi S, Aminabhavi TM. Novel rod-like [Cu(phen) 2(OAc)]·PF 6 complex for high-performance visible-light-driven photocatalytic degradation of hazardous organic dyes: DFT approach, Hirshfeld and fingerprint plot analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 350:119545. [PMID: 37995482 DOI: 10.1016/j.jenvman.2023.119545] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/19/2023] [Accepted: 11/04/2023] [Indexed: 11/25/2023]
Abstract
A novel octahedral distorted coordination complex was formed from a copper transition metal with a bidentate ligand (1,10-Phenanthroline) and characterized by Ultraviolet-visible spectroscopy, Ultraviolet-visible diffuse reflectance spectroscopy, Fourier-transform infrared spectroscopy, Brunauer-Emmett-Teller, Field emission scanning electron microscopy, and Single-crystal X-ray diffraction. The Hirshfeld surface and fingerprint plot analyses were conducted to determine the interactions between atoms in the Cu(II) complex. DFT calculations showed that the central copper ion and its coordinated atoms have an octahedral geometry. The Molecular electrostatic potential (MEP) map indicated that the copper (II) complex is an electrophilic compound that can interact with negatively charged macromolecules. The HOMO-LUMO analysis demonstrated the π nature charge transfer from acetate to phenanthroline. The band gap of [Cu(phen)2(OAc)]·PF6 photocatalyst was estimated to be 2.88 eV, confirming that this complex is suitable for environmental remediation. The photocatalytic degradation of erythrosine, malachite green, methylene blue, and Eriochrome Black T as model organic pollutants using the prepared complex was investigated under visible light. The [Cu(phen)2(OAc)]·PF6 photocatalyst exhibited degradation 94.7, 90.1, 82.7, and 74.3 % of malachite green, methylene blue, erythrosine, and Eriochrome Black T, respectively, under visible illumination within 70 min. The results from the Langmuir-Hinshelwood kinetic analysis demonstrated that the Cu(II) complex has a higher efficiency for the degradation of cationic pollutants than the anionic ones. This was attributed to surface charge attraction between photocatalyst and cationic dyes promoting removal efficiency. The reusability test indicated that the photocatalyst could be utilized in seven consecutive photocatalytic degradation cycles with an insignificant decrease in efficiency.
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Affiliation(s)
| | - Sajjad Rakhshani
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box 98135-674, Iran
| | - Zohreh Mehrabadi
- Department of Chemistry, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran
| | - Majid Farsadrooh
- Renewable Energies Research Laboratory, Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P.O. Box 98135 674, Zahedan, Iran.
| | - Mehran Feizi-Dehnayebi
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box 98135-674, Iran.
| | - Saleh Rakhshani
- Department of Pharmaceutics, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Michal Dušek
- Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21, Praha 8, Czech Republic
| | - Václav Eigner
- Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21, Praha 8, Czech Republic
| | - Sami Rtimi
- Global Institute for Water, Environment and Health, 1201, Geneva, Switzerland.
| | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India; University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali, 140413, Punjab, India.
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Sarma S, Dowerah D, Basumatary M, Phonglo A, Deka RC. Inhibitory potential of furanocoumarins against cyclin dependent kinase 4 using integrated docking, molecular dynamics and ONIOM methods. J Biomol Struct Dyn 2024:1-30. [PMID: 38189343 DOI: 10.1080/07391102.2023.2300755] [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: 10/04/2023] [Accepted: 12/23/2023] [Indexed: 01/09/2024]
Abstract
Cyclin Dependent Kinase 4 (CDK4) is vital in the process of cell-cycle and serves as a G1 phase checkpoint in cell division. Selective antagonists of CDK4 which are in use as clinical chemotherapeutics cause various side-effects in patients. Furanocoumarins induce anti-cancerous effects in a range of human tumours. Therefore, targeting these compounds against CDK4 is anticipated to enhance therapeutic effectiveness. This work intended to explore the CDK4 inhibitory potential of 50 furanocoumarin molecules, using a comprehensive approach that integrates the processes of docking, drug-likeness, pharmacokinetic analysis, molecular dynamics simulations and ONIOM (Our own N-layered Integrated molecular Orbital and Molecular mechanics) methods. The top five best docked compounds obtained from docking studies were screened for subsequent analysis. The molecules displayed good pharmacokinetic properties and no toxicity. Epoxybergamottin, dihydroxybergamottin and notopterol were found to inhabit the ATP-binding zone of CDK4 with substantial stability and negative binding free energy forming hydrogen bonds with key catalytic residues of the protein. Notopterol exhibiting the highest binding energy was subjected to ONIOM calculations wherein the hydrogen bonding interactions were retained with significant negative interaction energy. Hence, through these series of computerised methods, notopterol was screened as a potent CDK4 inhibitor and can act as a starting point in successive processes of drug design.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Srutishree Sarma
- CMML-Catalysis and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Sonitpur, Assam, India
| | - Dikshita Dowerah
- CMML-Catalysis and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Sonitpur, Assam, India
| | - Moumita Basumatary
- CMML-Catalysis and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Sonitpur, Assam, India
| | - Ambalika Phonglo
- CMML-Catalysis and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Sonitpur, Assam, India
| | - Ramesh Ch Deka
- CMML-Catalysis and Molecular Modelling Lab, Department of Chemical Sciences, Tezpur University, Sonitpur, Assam, India
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Milusheva M, Todorova M, Gledacheva V, Stefanova I, Feizi-Dehnayebi M, Pencheva M, Nedialkov P, Tumbarski Y, Yanakieva V, Tsoneva S, Nikolova S. Novel Anthranilic Acid Hybrids-An Alternative Weapon against Inflammatory Diseases. Pharmaceuticals (Basel) 2023; 16:1660. [PMID: 38139787 PMCID: PMC10747134 DOI: 10.3390/ph16121660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/21/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Anti-inflammatory drugs are used to relieve pain, fever, and inflammation while protecting the cardiovascular system. However, the side effects of currently available medications have limited their usage. Due to these adverse effects, there is a significant need for new drugs. The current trend of research has shifted towards the synthesis of novel anthranilic acid hybrids as anti-inflammatory agents. Phenyl- or benzyl-substituted hybrids exerted very good anti-inflammatory effects in preventing albumin denaturation. To confirm their anti-inflammatory effects, additional ex vivo tests were conducted. These immunohistochemical studies explicated the same compounds with better anti-inflammatory potential. To determine the binding affinity and interaction mode, as well as to explain the anti-inflammatory activities, the molecular docking simulation of the compounds was investigated against human serum albumin. The biological evaluation of the compounds was completed, assessing their antimicrobial activity and spasmolytic effect. Based on the experimental data, we can conclude that a collection of novel hybrids was successfully synthesized, and they can be considered anti-inflammatory drug candidates-alternatives to current therapeutics.
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Affiliation(s)
- Miglena Milusheva
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.T.)
- Department of Bioorganic Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
| | - Mina Todorova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.T.)
| | - Vera Gledacheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.); (M.P.)
| | - Iliyana Stefanova
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.); (M.P.)
| | - Mehran Feizi-Dehnayebi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan P.O. Box 98135-674, Iran;
| | - Mina Pencheva
- Department of Medical Physics and Biophysics, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria; (V.G.); (I.S.); (M.P.)
| | - Paraskev Nedialkov
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria;
| | - Yulian Tumbarski
- Department of Microbiology, Technological Faculty, University of Food Technologies, 4002 Plovdiv, Bulgaria; (Y.T.); (V.Y.)
| | - Velichka Yanakieva
- Department of Microbiology, Technological Faculty, University of Food Technologies, 4002 Plovdiv, Bulgaria; (Y.T.); (V.Y.)
| | - Slava Tsoneva
- Department of Analytical Chemistry and Computer Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Stoyanka Nikolova
- Department of Organic Chemistry, Faculty of Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria or (M.M.); (M.T.)
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Desai V, Panchal M, Parikh J, Modi K, Vora M, Panjwani F, Jain VK. Fluorescence Quenching and the Chamber of Nitroaromatics: A Dinaphthoylated Oxacalix[4]arene's (DNOC) Adventure Captured through Computational and Experimental Study. J Fluoresc 2023:10.1007/s10895-023-03505-8. [PMID: 37995071 DOI: 10.1007/s10895-023-03505-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/06/2023] [Indexed: 11/24/2023]
Abstract
This research presents the application of Dinaphthoylated Oxacalix[4]arene (DNOC) as a novel fluorescent receptor for the purpose of selectively detecting nitroaromatic compounds (NACs). The characterization of DNOC was conducted through the utilization of spectroscopic methods, including 1H-NMR, 13C-NMR, and ESI-MS. The receptor demonstrated significant selectivity in acetonitrile towards several nitroaromatic analytes, such as MNA, 2,4-DNT, 2,3-DNT, 1,3-DNB, 2,6-DNT, and 4-NT. This selectivity was validated by the measurement of emission spectra. The present study focuses on the examination of binding constants, employing Stern-Volmer analysis, as well as the determination of the lowest detection limit (3σ/Slope) and fluorescence quenching. These investigations aim to provide insights into the inclusion behavior of DNOC with each of the six analytes under fluorescence spectra investigation. Furthermore, the selectivity trend of the ligand DNOC for NAC detection is elucidated using Density Functional Theory (DFT) calculations conducted using the Gaussian 09 software. The examination of energy gaps existing between molecular orbitals, namely the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), provides a valuable understanding of electron-transfer processes and electronic interactions. Smaller energy gaps are indicative of heightened selectivity resulting from favorable electron-transfer processes, whereas bigger gaps suggest less selectivity attributable to weaker electronic contacts. This work integrates experimental and computational methodologies to provide a full understanding of the selective binding behavior of DNOC. As a result, DNOC emerges as a viable chemical sensor for detecting nitroaromatic explosives.
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Affiliation(s)
- Vishv Desai
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India
| | - Manthan Panchal
- Department of Chemistry, Silver Oak Institute of Science, Silver Oak University, Ahmedabad, Gujarat, India.
| | - Jaymin Parikh
- Department of Chemistry, Faculty of Science, Ganpat University, Kherva, 384012, Mehsana, Gujarat, India
| | - Krunal Modi
- Department of Humanities and Science, School of Engineering, Indrashil University, Mehsana, 382740, Gujarat, India.
| | - Manoj Vora
- Chemical Engineering Department, Institute of Technology, Nirma University, Ahmedabad, 382481, Gujarat, India
| | - Falak Panjwani
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India
| | - Vinod Kumar Jain
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India.
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