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Chaschin IS, Perepelkin EI, Sinolits MA, Badun GA, Chernysheva MG, Ivanova NM, Vasil Ev VG, Kizas OA, Anuchina NM, Khugaev GA, Britikov DV, Bakuleva NP. Coating based on chitosan/vancomycin nanoparticles: Patterns of formation in a water-carbon dioxide biphase system and in vivo stability. Int J Biol Macromol 2024; 278:134940. [PMID: 39173806 DOI: 10.1016/j.ijbiomac.2024.134940] [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: 03/14/2024] [Revised: 08/09/2024] [Accepted: 08/20/2024] [Indexed: 08/24/2024]
Abstract
The patterns of formation of chitosan nanoparticles doped with vancomycin and coatings based on them in carbonate solutions have been investigated for the first time in this study. Using a technique of radioactive indicators, it was found that at a CO2 pressure of 30 MPa, the yield of the nanoparticles was ∼85 %, and a maximum antibiotic encapsulation efficiency of ∼30 % was achieved. By spectrophotometric and high-resolution microscopy, it was found that the coating of stabilized xenopericardial tissue of bioprosthetic heart valve, based on chitosan nanoparticles doped with vancomycin with a zeta potential |ζ| ∼20 mV completely covers collagen fibers by depositing about 60 nm nanoparticles onto them under direct deposition from carbonic acid at a pressure of 30 MPa CO2. The coating preserves the mechanical strength characteristics of collagen tissue and completely suppresses the growth of S. aureus pathogenic biofilm. This is consistent with the observed increase in antibiotic release of 15 % when the medium was acidified. Histological study demonstrated that the structure of pericardial tissues was not significantly altered by the deposition nanoparticles from carbonic acid. It was found that the rate of biodegradation of polymers and vancomycin in the coating differs by half (16 weeks for the rat model). A significantly lower degradation rate of antibiotics (∼50 % of vancomycin total remaining mass and ∼25 % of chitosan) was associated with its reliable encapsulation into nanoparticles.
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Affiliation(s)
- Ivan S Chaschin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova, Moscow 119991, Russian Federation; Bakulev Scientific Center for Cardiovascular Surgery, 135 Rublevskoe Sh., Moscow 121552, Russian Federation.
| | - Evgenii I Perepelkin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova, Moscow 119991, Russian Federation
| | - Maria A Sinolits
- Lomonosov Moscow State University, Chemistry Department, GSP-1, Leninskie Gory, Moscow 119991, Russian Federation
| | - Gennadii A Badun
- Lomonosov Moscow State University, Chemistry Department, GSP-1, Leninskie Gory, Moscow 119991, Russian Federation
| | - Maria G Chernysheva
- Lomonosov Moscow State University, Chemistry Department, GSP-1, Leninskie Gory, Moscow 119991, Russian Federation.
| | - Nina M Ivanova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospect, Moscow 119991, Russian Federation.
| | - Victor G Vasil Ev
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova, Moscow 119991, Russian Federation.
| | - Olga A Kizas
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova, Moscow 119991, Russian Federation.
| | - Nelya M Anuchina
- Bakulev Scientific Center for Cardiovascular Surgery, 135 Rublevskoe Sh., Moscow 121552, Russian Federation
| | - Georgiy A Khugaev
- Bakulev Scientific Center for Cardiovascular Surgery, 135 Rublevskoe Sh., Moscow 121552, Russian Federation
| | - Dmitrii V Britikov
- Bakulev Scientific Center for Cardiovascular Surgery, 135 Rublevskoe Sh., Moscow 121552, Russian Federation.
| | - Natalia P Bakuleva
- Bakulev Scientific Center for Cardiovascular Surgery, 135 Rublevskoe Sh., Moscow 121552, Russian Federation
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2
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Rekik N. IR absorption band of weak H-Bonded systems: Showcasing the signature of the quantum indirect damping within the framework of a new approach using non-Hermitean Hamiltonian formalism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124174. [PMID: 38518440 DOI: 10.1016/j.saa.2024.124174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 03/11/2024] [Accepted: 03/17/2024] [Indexed: 03/24/2024]
Abstract
Herein, we investigate the effects of the irreversible action of the medium on the theoretical elucidation of the IR spectrum of weakly H-bonded systems, a prototypical model which provides a rigorous treatment of the relaxation mechanisms impacts on the IR spectral density. The attention will be focused particularly on the effect of indirect damping on the IRυS(X-H⃗) spectrum beyond the harmonic and adiabatic approximations. The ultimate objective of the present investigation is the treatment of the action of the surrounding of the intermonomer modes of H-bonded systems, which must induce a broadening of the Dirac delta peaks, the nature of which, as shown by Maréchal and Witkowski theory, is a Franck-Condon progression. The quantum treatment of the IR absorption band reveals that quantum relaxation of the intermonomer mode of H-bonded complexes could be successfully approached by a non-Hermitian Hamiltonian formalism. Motivated by development of a second method that will be able to validate the first approach, a computationally efficient algorithm was proposed for elucidating the quantum indirect relaxation using Hermitean Hamiltonians. The real eigenvalues, corresponding to different energies of the system are considered to be complex by adjunction of the imaginary parts, which reflects the action of the indirect irreversible action of the medium. These two crude approaches may pave the way for the incorporation of the mechanism of indirect relaxation in more physical and complex situations dealing, particularly, with tunnelling effects in strong H-bonded species, Fermi resonances, and Davydov coupling for cyclic H-bonds dimers beyond the harmonic and adiabatic assumptions.
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Affiliation(s)
- Najeh Rekik
- Physics Department, College of Science, King Faisal University, Al Ahsa, 31982, Saudi Arabia; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
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3
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Iñiguez-Moreno M, Pizaña-Aranda JJP, Ramírez-Gamboa D, Ramírez-Herrera CA, Araújo RG, Flores-Contreras EA, Iqbal HMN, Parra-Saldívar R, Melchor-Martínez EM. Enhancing pectin extraction from orange peel through citric acid-assisted optimization based on a dual response. Int J Biol Macromol 2024; 263:130230. [PMID: 38373564 DOI: 10.1016/j.ijbiomac.2024.130230] [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: 10/02/2023] [Revised: 01/26/2024] [Accepted: 02/14/2024] [Indexed: 02/21/2024]
Abstract
Pectin is widely used in several products in the industry. Conventionally, strong and harmful acids are used for its extraction. This study optimized the extraction of orange peel's pectin using citric acid, considering yield and degree of esterification (DE) as response variables. Proximal analyses were performed, and the samples were subjected to a Box-Behnken design on three central points, considering as variables the temperature, time, and pH. The results of proximate analyses of the orange peels revealed 11.76 % moisture content, 87.26 % volatiles, 0.09 % ash, 50.45 % soluble carbohydrates, 70.60 % total carbohydrates, 0.89 % fixed carbon, 5.35 % lipids, and 36.75 mg GAE/g of phenolic compounds. The resulting second-order polynomial model described the relation of the input and output variables related to each other. The best performance to obtain a higher yield (18.18 %) of high methoxyl pectin (DE 50 %) was set at 100 °C/30 min/pH 2.48. Pectin showed antioxidant properties by ABTS and DPPH assays and similar thermal properties to the commercial polymer. Its equivalent weight was 1219.51 mol/g, and the methoxyl and anhydrouronic acid were 2.23 and 67.10 %, respectively. Hence, pectin extraction with citric acid results in a high-quality polymer and could be used as a gelling agent, stabilizer, or texturizer in food products.
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Affiliation(s)
- Maricarmen Iñiguez-Moreno
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | - José Juan Pablo Pizaña-Aranda
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | - Diana Ramírez-Gamboa
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | | | - Rafael G Araújo
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | - Elda A Flores-Contreras
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | - Roberto Parra-Saldívar
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico
| | - Elda M Melchor-Martínez
- Tecnologico de Monterrey, School and Engineering and Science, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, 64849, Mexico.
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4
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Kunjumol VS, Jeyavijayan S, Sumathi S, Karthik N. Spectroscopic, computational, cytotoxicity, and docking studies of 6-bromobenzimidazole as anti-breast cancer agent. J Mol Recognit 2024; 37:e3074. [PMID: 38168749 DOI: 10.1002/jmr.3074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/25/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024]
Abstract
6-Bromobenzimidazole (6BBZ) has been calculated in this study utilizing the 6-311++G(d,p) basis set and the Becke-3-Lee-Yang-Parr density functional approaches. The basic frequencies and geometric optimization are known. FTIR, FT-Raman, and UV-Vis spectra of the substance are compared between its computed and observed values. The energy gap between highest occupied molecular orbital-lowest unoccupied molecular orbital and molecule electrostatic potentials has been represented by charge density distributions that may be associated with the biological response. Time-dependent density functional theory calculations in the gas phase and dimethyl sulfoxide were carried out to ascertain the electronic properties and energy gap values using the same basis set. Molecular orbital contributions are investigated using the overlap population, partial, and total densities of states. Natural bond analysis was found to have strong electron delocalization by means of π(C4-C9) → π*(C5-C6), LP (N1) → π*(C7-C8), and LP(Br12) → π*(C5-C6) interactions. The Fukui function and Mulliken analysis have been explored on the atomic charges of the molecule. The nuclear magnetic resonance chemical shifts for 1 H and 13 C have been computed using the gauge-independent atomic orbital technique. With the highest binding affinity (-6.2 kcal mol-1 ) against estrogen sulfotransferase receptor (PDB ID: 1AQU) and low IC50 value of 17.23 μg/mL, 6BBZ demonstrated potent action against the MCF-7 breast cancer cell line. Studies on the antibacterial activity and ADMET prediction of the molecule have also been carried out.
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Affiliation(s)
- V S Kunjumol
- Department of Engineering, University of Technology and Applied Science, Shinas, Oman
| | - S Jeyavijayan
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, Tamil Nadu, India
| | - S Sumathi
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, Tamil Nadu, India
| | - N Karthik
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, Tamil Nadu, India
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5
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Raza MA, Farwa U, Danish M, Ozturk S, Aagar AA, Dege N, Rehman SU, Al-Sehemi AG. Computational modeling of imines based anti-oxidant and anti-esterases compounds: Synthesis, single crystal and In-vitro assessment. Comput Biol Chem 2023; 104:107880. [PMID: 37196604 DOI: 10.1016/j.compbiolchem.2023.107880] [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: 04/05/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 05/19/2023]
Abstract
Molecular modeling strategy was adopted to check the biological potential of the imine based molecules against free radical, acetylcholine esterase and butyrylcholine esterase. Three Schiff based compounds as (E)-2-(((4-bromophenyl)imino)methyl)-4-methylphenol (1), (E)-2-(((3-fluorophenyl)imino)methyl)-4-methylphenol (2) and (2E,2E)-2-(2-(2-hydroxy-5-methylbenzylidene)hydrazono)-1,2-diphenylethanone (3) were synthesized with high yield. The synthesized compounds were characterized with the help of modern techniques such as UV, FTIR and NMR while exact structure was depicted with Single Crystal X-Ray diffraction technique which disclosed that compound 1 is orthorhombic, while 2 and 3 are monoclinic. A hybrid functional (B3LYP) method with general basis set of 6-31 G(d,p) were applied to optimize synthesized Schiff bases. The contribution of in-between molecular contacts within a crystalline assembly of compounds were studied using Hirshfeld surface analysis (HS). In order to check the ability of the synthesized compounds toward free radical and enzyme inhibition, in vitro models were used to assess the radical scavenging and enzyme inhibition potential which depicted that compound 3 showed highest potential (57.43 ± 1.0%; DPPH, 75.09 ± 1.0%; AChE and 64.47 ± 1.0%; BChE). The ADMET assessments suggested the drug like properties of the synthesized compounds. It was concluded from results (in vitro and in silico) that synthesized compound have ability to cure the disorder related to free radical and enzyme inhibition. Compound 3 was shown to be the most active compared to other compounds.
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Affiliation(s)
- Muhammad Asam Raza
- Department of Chemistry, Hafiz Hayat Campus, University of Gujrat, Gujrat, Pakistan.
| | - Umme Farwa
- Department of Chemistry, Hafiz Hayat Campus, University of Gujrat, Gujrat, Pakistan
| | - Muhammad Danish
- Department of Chemistry, University of Sialkot, Sialkot 51310, Pakistan
| | - Seyhan Ozturk
- Department of Chemistry, Ondokuz Mayis University, Faculty of Arts and Sciences, Samsun, Turkey
| | - Aysen Alaman Aagar
- Department of Chemistry, Ondokuz Mayis University, Faculty of Arts and Sciences, Samsun, Turkey
| | - Necmi Dege
- Department of Physics, Ondokuz Mayis University, Faculty of Arts and Sciences, Samsun, Turkey
| | - Shafiq Ur Rehman
- Department of Chemistry, University of Central Punjab, Lahore, Pakistan
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6
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Sumithra M, Sundaraganesan N, Rajesh R, Ilangovan V, Irfan A, Muthu S. Electron density, charge transfer, solvent effect and molecular spectroscopic studies on 2,2-Dimethyl-N-pyridin-4-yl-propionamide – A potential antioxidant. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2023.114103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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7
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Smitha Rose C, Suthan T, Mary Delphine S, Wise Bell CC, Lekshmi NP. Studies on crystal growth, experimental, structural, DFT, optical, thermal and biological studies of 3-hydroxy-4-methoxybenzaldehyde single crystals. Heliyon 2023; 9:e15219. [PMID: 37095901 PMCID: PMC10122042 DOI: 10.1016/j.heliyon.2023.e15219] [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: 02/21/2023] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 04/26/2023] Open
Abstract
The organic 3-hydroxy-4-methoxybenzaldehyde single crystal has been grown by the slow evaporation technique. Single crystal X-ray diffraction (XRD) study shows that the grown crystal belongs to a monoclinic crystal system with centrosymmetric space group P21/c. The spectral analysis of 3-hydroxy-4-methoxybenzaldehyde calculations was performed with the help of DFT at the B3LYP/6-311 + G(d,p) level of theory. The experimental results of FTIR and FT-Raman were compared with the computational results. Detailed interpretations of the vibrational spectra were carried out with the aid of vibrational energy distribution analysis using potential energy distribution (PED) analysis and vibrational wavenumber scaled by the WLS (Wavenumber Linear Scaling) method. The natural bond orbital (NBO) analysis was carried out to identify intramolecular hydrogen bonding. The optical properties of the grown crystal were analyzed by UV-Visible studies. Photoluminescence studies show that the high-intensity peak observed around 410 nm. The laser damage threshold value of the grown crystal has been determined using an Nd:YAG laser operating at 1064 nm. The HOMO (Highest Occupied Molecular Orbital) - LUMO (Lowest Unoccupied Molecular Orbital) was used to identify the energy gap. Hirshfeld Surface (HS) analysis was used to determine the intermolecular interactions. The thermal properties of the grown crystal were performed by Thermogravimetric (TG) and Differential thermal analyses (DTA). The kinetic and thermodynamic parameters were calculated. The surface morphology of the grown crystal was studied by using Scanning Electron Microscopy (SEM) analysis. The antibacterial and antifungal studies were analyzed.
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Affiliation(s)
- C. Smitha Rose
- Department of Physics & Research Centre, Holy Cross College, Nagercoil, 629002, India
- Affiliated to Manonmaniam Sundaranar University, Tirunelveli, 627012, India
| | - T. Suthan
- Department of Physics, Lekshmipuram College of Arts and Science, Neyyoor, 629802, India
- Affiliated to Manonmaniam Sundaranar University, Tirunelveli, 627012, India
- Corresponding author. Department of Physics, Lekshmipuram College of Arts and Science, Neyyoor, 629802, India.
| | - S. Mary Delphine
- Department of Physics & Research Centre, Holy Cross College, Nagercoil, 629002, India
- Affiliated to Manonmaniam Sundaranar University, Tirunelveli, 627012, India
| | - C. Cynitha Wise Bell
- Department of Physics, Loyola Institute of Technology and Science, Thovalai, 629302, India
| | - N.C.J. Packia Lekshmi
- Department of Allied Health Sciences, Noorul Islam Centre for Higher Education, Kumaracoil, 629180, India
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8
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Malar Wezhli M, Balamurugan P, Raju K, Sevvanthi S, Irfan A, Javed S, Muthu S. Quantum computational, spectroscopic, topological investigations and molecular docking studies on piperazine derivatives: A comparative study on Ethyl, Benzene and Furan sulfonyl Piperazine. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Shen H, Wang J, Ao J, Hou Y, Xi M, Cai Y, Li M, Luo A. Structure-activity relationships and the underlying mechanism of α-amylase inhibition by hyperoside and quercetin: Multi-spectroscopy and molecular docking analyses. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121797. [PMID: 36115306 DOI: 10.1016/j.saa.2022.121797] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/19/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Inhibiting the activity of α-amylase has been considered an effective strategy to manage hyperglycemia. Hyperoside and quercetin are the main natural flavonoids in various plants, and the inhibition mechanism on α-amylase remains unclear. In this study, the structure-activity relationships between hyperoside/quercetin and α-amylase were evaluated by enzyme kinetic analysis, multi-spectroscopic techniques, and molecular docking analysis. Results showed that hyperoside and quercetin exhibited significant α-amylase inhibitory activities with IC50 values of 0.491 and 0.325 mg/mL, respectively. The α-amylase activity decreased in the presence of hyperoside and quercetin in a competitive and noncompetitive manner, respectively. UV-vis spectra suggested that the aromatic amino acid residues (Trp and Tyr) microenvironment of α-amylase changed in the presence of these two flavonoids. FTIR and CD spectra showed the vibrations of the amide bands and the secondary structure content changes. The fluorescence quenching mechanism of α-amylase by hyperoside and quercetin belonged to the static quenching type. Finally, molecular docking intuitively showed that hyperoside/quercetin formed hydrogen bonds with the key active site residues (Asp197, Glu233, and Asp300) in α-amylase. MD simulation indicated hyperoside/quercetin-α-amylase docked complexes had good stability. Taken together, this research provides new sights to developing potent drugs or functional foods with hyperoside and quercetin, offering new avenues for hyperglycemia treatment.
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Affiliation(s)
- Heyu Shen
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.
| | - Jun Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.
| | - Jingfang Ao
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Yujie Hou
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Meihua Xi
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Yingying Cai
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Mei Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Anwei Luo
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.
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10
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Geethapriya J, Shanthidevi A, Arivazhagan M, Elangovan N, Sowrirajan S, Manivel S, Thomas R. Synthesis, characterization, computational, excited state properties, wave function and molecular docking studies of (E)-1-(perfluorophenyl)-N-(p-tolyl) methanimine. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Synthesis, Computational, Electronic spectra, and molecular docking studies of 4-((diphenylmethylene)amino)-N-(pyrimidin-2-yl)benzenesulfonamide. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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12
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Theoretical Study on Spectrum and Luminescence Mechanism of Indocyanine Green Dye Based on Density Functional Theory (DFT). J CHEM-NY 2022. [DOI: 10.1155/2022/4321595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Indocyanine green is a great near-infrared fluorescence with good luminescent properties and important medical applications. In this paper, the theoretical spectrum and orbital model of its molecular level are established. The two most probable conformations were studied, and their energies, vibrational spectra, UV-Vis absorption spectra, frontier molecular orbitals (HOMO and LUMO), and energy gaps were obtained by density functional theory (DFT) calculations, respectively. This provides a theoretical and design basis for the development of novel dyes similar to indocyanine green dyes and a reference case for improved application methods and synthetic predesign of novel fluorescent dyes.
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Wang Z, Yu K, Zhao Y, Xue J, Jiang C, Wang H, Wu H. Aggregation induced spectral splitting and Fermi resonance of Ethylene Carbonate in binary mixture. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121593. [PMID: 35839693 DOI: 10.1016/j.saa.2022.121593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/04/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
The vibration band of the ring stretching (ν14), the fundamental ring breathing (ν17) and the Fermi resonance band of carbonyl stretching mixing with the overtone of the ring breathing (ν5 + 2ν17) have been investigated in solid ethylene carbonate (EC) and EC/CH3CN and EC/CHCl3 binary mixture. Dimer structure with aggregation-induced spectral splitting model (AIS) was applied to calculate the vibration spectra using the B3LYP-D3/6-311+G (d,p) procedure. The noncoincidence effect (NCE) and concentration induced frequency shifts of the ν14 and ν5 could be well explained by AIS model based on the dimer structure. Four bands were observed with two in the isotropic and two in the anisotropic Raman spectra and their NCE value decreased with the decrease of EC volume fraction in the binary mixture, and finally disappeared. NCE value and the Fermi resonance constants of EC at different concentrations were calculated from the experimental data.
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Affiliation(s)
- Zian Wang
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Keji Yu
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yanying Zhao
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jiadan Xue
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Caiying Jiang
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Huigang Wang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, PR China.
| | - Huizhen Wu
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China.
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14
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Thomas R, Pooventhiran T. Study of the dynamics of the Interaction of glycine and GABA with water and ethanol using theoretical tools. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Synthesis, structural, computational, electronic spectra, wave function properties and molecular docking studies of (Z)-4-(((5-methylfuran-2-yl)methylene)amino)-N-(thiazol-2-yl)benzenesulfonamide. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Ganesan TS, Elangovan N, Vanmathi V, Sowrirajan S, Chandrasekar S, Murthy KS, Thomas R. Spectroscopic, Computational(DFT), Quantum mechanical studies and protein-ligand interaction of Schiff base 6,6-((1,2-phenylenebis(azaneylylidene))bis(methaneylylidene))bis(2-methoxyphenol) from o-phenylenediamine and 3- methoxysalicylaldehyde. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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17
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Latha A, Elangovan N, Manoj K, Maheswari V, Balachandran V, Balasubramani K, Sowrirajan S, Chandrasekar S, Thomas R. Synthesis, single crystal (XRD), spectral characterization, computational (DFT), quantum chemical modelling and anticancer activity of di(p-bromobenzyl) (dibromo) (1, 10-phenanthroline) tin (IV) complex. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Mohammadi MD, Abbas F, Louis H, Afahanam LE, Gber TE. Intermolecular Interactions between Nitrosourea and Polyoxometalate compounds. ChemistrySelect 2022. [DOI: 10.1002/slct.202202535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | - Faheem Abbas
- Department of Chemistry Tsinghua University Beijing 100084 P. R. China
| | - Hitler Louis
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
| | - Lucy E. Afahanam
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
| | - Terkumbu E. Gber
- Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria
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19
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Osigbemhe IG, Oyoita EE, Louis H, Khan EM, Etim EE, Edet HO, Ikenyirimba OJ, Oviawe AP, Obuye F. Antibacterial potential of N-(2-furylmethylidene)-1, 3, 4-thiadiazole-2-amine: Experimental and theoretical investigations. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100597] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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20
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Study on Rh(I)-o-aminophenol Catalyst Catalyzed Carbonylation of Methanol to Acetic Acid. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-06936-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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21
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Synthesis, structural features, excited state properties, flouresence spectra, and quantum chemical modeling of (E)-2-hydroxy-5-(((4-sulfamoylphenyl)imino) methyl)benzoic acid. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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22
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Abstract
Plant polysaccharides include pectins, which are responsible for an important role in plant physiology and are part of the plant cell wall. These compounds are known as gelling and stabilizing agents, which are widely used in the food industry. The scientific literature lacks precise information on the spectroscopy of apple pectin and citrus pectin. Therefore, the aim of this work was to test and compare the physicochemical properties of these compounds. The curves of FT-IR, NMR, ESI-MS, and thermogravimetric analysis (TGA) of pectin samples were measured and discussed. The analysis of the spectroscopic results confirms that the isolated pectins using various enzymes (xylanase and cellulase) have a structure similar to the commercially available pectin (PectaSol-C), with a noticeable change in morphology. These characteristics are helpful for further basic research and application.
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Kazachenko AS, Akman F, Vasilieva NY, Issaoui N, Malyar YN, Kondrasenko AA, Borovkova VS, Miroshnikova AV, Kazachenko AS, Al-Dossary O, Wojcik MJ, Berezhnaya YD, Elsuf’ev EV. Catalytic Sulfation of Betulin with Sulfamic Acid: Experiment and DFT Calculation. Int J Mol Sci 2022. [DOI: doi.org/10.3390/ijms23031602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Betulin is an important triterpenoid substance isolated from birch bark, which, together with its sulfates, exhibits important bioactive properties. We report on a newly developed method of betulin sulfation with sulfamic acid in pyridine in the presence of an Amberlyst®15 solid acid catalyst. It has been shown that this catalyst remains stable when being repeatedly (up to four cycles) used and ensures obtaining of sulfated betulin with a sulfur content of ~10%. The introduction of the sulfate group into the betulin molecule has been proven by Fourier-transform infrared, ultraviolet-visible, and nuclear magnetic resonance spectroscopy. The Fourier-transform infrared (FTIR) spectra contain absorption bands at 1249 and 835–841 cm−1; in the UV spectra, the peak intensity decreases; and, in the nuclear magnetic resonance (NMR) spectra, of betulin disulfate, carbons С3 and С28 are completely shifted to the weak-field region (to 88.21 and 67.32 ppm, respectively) with respect to betulin. Using the potentiometric titration method, the product of acidity constants K1 and K2 of a solution of the betulin disulfate H+ form has been found to be 3.86 × 10–6 ± 0.004. It has been demonstrated by the thermal analysis that betulin and the betulin disulfate sodium salt are stable at temperatures of up to 240 and 220 °C, respectively. The density functional theory method has been used to obtain data on the most stable conformations, molecular electrostatic potential, frontier molecular orbitals, and mulliken atomic charges of betulin and betulin disulfate and to calculate the spectral characteristics of initial and sulfated betulin, which agree well with the experimental data.
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25
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Kazachenko AS, Akman F, Vasilieva NY, Issaoui N, Malyar YN, Kondrasenko AA, Borovkova VS, Miroshnikova AV, Kazachenko AS, Al-Dossary O, Wojcik MJ, Berezhnaya YD, Elsuf’ev EV. Catalytic Sulfation of Betulin with Sulfamic Acid: Experiment and DFT Calculation. Int J Mol Sci 2022; 23:1602. [PMID: 35163526 PMCID: PMC8836291 DOI: 10.3390/ijms23031602] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 01/18/2023] Open
Abstract
Betulin is an important triterpenoid substance isolated from birch bark, which, together with its sulfates, exhibits important bioactive properties. We report on a newly developed method of betulin sulfation with sulfamic acid in pyridine in the presence of an Amberlyst®15 solid acid catalyst. It has been shown that this catalyst remains stable when being repeatedly (up to four cycles) used and ensures obtaining of sulfated betulin with a sulfur content of ~10%. The introduction of the sulfate group into the betulin molecule has been proven by Fourier-transform infrared, ultraviolet-visible, and nuclear magnetic resonance spectroscopy. The Fourier-transform infrared (FTIR) spectra contain absorption bands at 1249 and 835-841 cm-1; in the UV spectra, the peak intensity decreases; and, in the nuclear magnetic resonance (NMR) spectra, of betulin disulfate, carbons С3 and С28 are completely shifted to the weak-field region (to 88.21 and 67.32 ppm, respectively) with respect to betulin. Using the potentiometric titration method, the product of acidity constants K1 and K2 of a solution of the betulin disulfate H+ form has been found to be 3.86 × 10-6 ± 0.004. It has been demonstrated by the thermal analysis that betulin and the betulin disulfate sodium salt are stable at temperatures of up to 240 and 220 °C, respectively. The density functional theory method has been used to obtain data on the most stable conformations, molecular electrostatic potential, frontier molecular orbitals, and mulliken atomic charges of betulin and betulin disulfate and to calculate the spectral characteristics of initial and sulfated betulin, which agree well with the experimental data.
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Affiliation(s)
- Aleksandr S. Kazachenko
- Department of Organic and Analytical Chemistry, Institute of Nonferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (N.Y.V.); (Y.N.M.); (V.S.B.); (A.V.M.); (A.S.K.)
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
| | - Feride Akman
- Vocational School of Food, Agriculture and Livestock, University of Bingöl, Bingöl 12000, Turkey;
| | - Natalya Yu. Vasilieva
- Department of Organic and Analytical Chemistry, Institute of Nonferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (N.Y.V.); (Y.N.M.); (V.S.B.); (A.V.M.); (A.S.K.)
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
| | - Noureddine Issaoui
- Laboratory of Quantum and Statistical Physics (LR18ES18), Faculty of Sciences, University of Monastir, Monastir 5079, Tunisia;
| | - Yuriy N. Malyar
- Department of Organic and Analytical Chemistry, Institute of Nonferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (N.Y.V.); (Y.N.M.); (V.S.B.); (A.V.M.); (A.S.K.)
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
| | - Aleksandr A. Kondrasenko
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
| | - Valentina S. Borovkova
- Department of Organic and Analytical Chemistry, Institute of Nonferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (N.Y.V.); (Y.N.M.); (V.S.B.); (A.V.M.); (A.S.K.)
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
| | - Angelina V. Miroshnikova
- Department of Organic and Analytical Chemistry, Institute of Nonferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (N.Y.V.); (Y.N.M.); (V.S.B.); (A.V.M.); (A.S.K.)
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
| | - Anna S. Kazachenko
- Department of Organic and Analytical Chemistry, Institute of Nonferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (N.Y.V.); (Y.N.M.); (V.S.B.); (A.V.M.); (A.S.K.)
| | - Omar Al-Dossary
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Marek J. Wojcik
- Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland;
| | - Yaroslava D. Berezhnaya
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
- Institute of Chemical Technologies, Siberian State University of Science and Technology, pr. Mira 82, 660049 Krasnoyarsk, Russia
| | - Evgeniy V. Elsuf’ev
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50, bld. 24, 660036 Krasnoyarsk, Russia; (A.A.K.); (Y.D.B.); (E.V.E.)
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26
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Salman S, Rekik N, Suleiman J, Abuzir AR. Elucidating the Theoretical Evolution of the IR Spectral Density and the Potential Energy Surfaces of Hydrogen Bonded Complexes: A Quantum Dynamical Study. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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27
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Amalanathan M, Michael Mary MS, Beatrice ML, Delphine SM, Robert HM, Twinkle AR, Ratkovic Z, Samson Y. Synthesis, structural, spectroscopic and docking studies on (E)-1-Ferrocenyl-3-phenylpropen-1-one by the density functional theory. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.2016743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- M. Amalanathan
- Department of Physics & Research Centre, Nanjil Catholic College of Arts and Science, Kaliyakkavilai, India
| | - M. Sony Michael Mary
- Manonmaniam Sundaranar University, Tirunelveli, India
- Department of Physics & Research Centre, Nesamony Memorial Christian College, Marthandam, India
| | - M. Latha Beatrice
- Manonmaniam Sundaranar University, Tirunelveli, India
- Department of Physics & Research Centre, Holy Cross College, Nagercoil, India
| | - S. Mary Delphine
- Department of Physics & Research Centre, Holy Cross College, Nagercoil, India
| | - H. Marshan Robert
- Department of Physics & Research Centre, Women’s Christian College, Nagercoil, India
| | - A. R. Twinkle
- Department of Physics, Mar Ivanios College, Thiruvananthapuram, India
| | - Zoran Ratkovic
- Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
| | - Y. Samson
- Department of Physics, Annai Velankanni College, Tholayavattan, India
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28
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Vimala M, Stella Mary S, Ramalakshmi R, Muthu S, Niranjana Devi R, Irfan A. Quantum computational studies on optimization, donor-acceptor analysis and solvent effect on reactive sites, global descriptors, non-linear optical parameters of Methyl N-Boc-piperidine-3-carboxylate. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117608] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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29
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Rekik N, Flakus HT, Hachula B, Salman S, Alshoaibi A, Farooq U. How far the vibrational exciton interactions are responsible for the generation of the infrared spectra of oxindole crystals? SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 237:118302. [PMID: 32416514 DOI: 10.1016/j.saa.2020.118302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/01/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Oxindole (indolin-2-one, Ox) is a unique and a crucial molecular system in spectroscopic studies. Indole is the core structure of many substances found in the human body (tryptophan, serotonin) and the indole alkaloids have highly differentiated pharmacological properties such as analgesic, anti-fever and anti-inflammatory. The Ox's structural results given in the Cambridge Structural Database revealed the existence of only one crystalline form of Ox, referred to the α-form. However, we have experimentally noticed the existence of two polymorphic forms during the crystallization of Ox. Furthermore, the significant spectral differences that we have observed in the solid state infrared spectra of these two forms additionally confirm the existence of the polymorphism phenomenon. Of the four polymorphic forms of Ox, two of them - α - and β-forms - were of particular interest. In the crystalline lattices of both polymorphs, we observed a similar pattern of molecular arrangements giving rise to the supramolecular synthon according to the terminology of Etter. Moreover, hydrogen bonds in the dimer of the α-form are found to be non-equivalent (non-centrosymmetric dimers), having a length of 2797 Å and 2979 Å, respectively. Comparatively, in the most densely packed crystalline structure of Ox, the β-form, the dimer is formed by a pair of almost identical intermolecular hydrogen bonds and consequently the crystals of β-form exhibited spectral properties typical to centrosymmetric hydrogen bond dimers. In addition, the spectroscopic studies that we have conducted to polymorphic forms of Ox, isotopically diluted with deuterium, show the dramatic influence of isotopic substitution in the hydrogen bridge on the infrared spectra of hydrogen bonding. Thus, the main goal of this work is the proposition of a theoretical approach that can describe the main features of the crystalline infrared spectra of the Ox polymorphs. The proposed approach is based on the phenomenon of the exciton coupling results directly from intermolecular interactions in the vibrationally excited state which leads to the delocalization of the excitation over the molecules in the lattice and to the Davydov splitting effect in the crystalline spectra.
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Affiliation(s)
- Najeh Rekik
- Physics Department, College of Sciences, University of Ha'il, Ha'il, Saudi Arabia; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Henryk T Flakus
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, Pl-40-006 Katowice, Poland.
| | - Barbara Hachula
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Saed Salman
- Physics Department, Faculty of Science, King Faisal University, Saudi Arabia
| | - Adil Alshoaibi
- Physics Department, Faculty of Science, King Faisal University, Saudi Arabia
| | - Umer Farooq
- Physics Department, College of Sciences, University of Ha'il, Ha'il, Saudi Arabia
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Rekik N, Salman S, Suleiman J, Farooq U, Flakus HT. IR spectral density of the υS(Cl–H→) band in gaseous (CH3)2O…HCl complex: Phase decoherence due to the anharmonic coupling theory and the bending mode effects. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.11.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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31
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Rekik N, Salman S, Farooq U, Nakajima T, Wojcik MJ, Blaise P. Towards accurate infrared spectral density of weak H-bonds in absence of relaxation mechanisms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 207:197-208. [PMID: 30240981 DOI: 10.1016/j.saa.2018.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/04/2018] [Accepted: 09/01/2018] [Indexed: 06/08/2023]
Abstract
Following the previous theoretical developments to completely reproduce the IR spectra of weak hydrogen bond complexes within the framework of the linear response theory (LRT), the quantum theory of the high stretching mode spectral density (SD) of weak H-bonds is reconsidered. Within the LRT theory, the SD is the one sided Fourier transform of the autocorrelation function (ACF) of the high stretching mode dipole moment operator. In order to provide more accurate theoretical bandshapes, we have explored the equivalence between the SDs given in previous studies with respect to a new quantum one, and revealed that in place of the basic equations used in the precedent works for which the SD IOld(ω)=2Re∫0∞GOld(t)e-iωtdt where the ACF GOld(t) = ⟨μ(0)μ(t)+⟩ = tr {ρ {μ(0)} {μ(t)}+}, one can use a new expression for the SD, given by INew(ω)=2ωRe∫0∞GNew(t)e-iωtdt where GNew(t)=μ(0)μ(t)+=1βtrρB∫0βμ(0)μ(t+iλℏ)+dλ. Here ρB is the Boltzmann density operator, μ(0) the dipole moment operator at initial time and μ(t) the dipole moment operator at time t in the Heisenberg picture, ℏ is the Planck constant, β is the inverse of the Boltzmann factor kBT where T is the absolute temperature and kB the Boltzmann constant. Using this formalism, we demonstrated that the new quantum approach gives the same final SD as used by previous models, and reduces to the Franck-Condon progression appearing in the Maréchal and Witkowski's pioneering approach when the relaxation mechanisms are ignored. Results of this approach shed light on the equivalence between the quantum and classical IR SD approaches for weak H-bonds in absence of medium surroundings effect, which has been a subject of debate for decades.
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Affiliation(s)
- Najeh Rekik
- Physics Department, Faculty of Science, University of Ha'il, Saudi Arabia; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Saed Salman
- Physics Department, College of Science, King Faisal University, Al Ahsa 31982, Saudi Arabia
| | - Umer Farooq
- Physics Department, Faculty of Science, University of Ha'il, Saudi Arabia
| | - Takahito Nakajima
- RIKEN Advanced Institute for Computational Science, 7-1-26 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Marek J Wojcik
- Laboratory of Molecular Spectroscopy, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, Poland
| | - Paul Blaise
- Laboratoire de Mathématiques et Physique (LAMPS), Université de Perpignan Via Domitia (UPVD), 52 Av. Paul Alduy, Perpignan Cedex 66860, France
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Rekik N, Suleiman J, Blaise P, Wojcik MJ. Equivalence between the Classical and Quantum IR Spectral Density Approaches of Weak H-Bonds in the Absence of Damping. J Phys Chem A 2018; 122:2108-2115. [PMID: 29436830 DOI: 10.1021/acs.jpca.8b00269] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The aim of this paper is to overhaul the quantum elucidation of the spectral density (SD) of weak H-bonds treated without taking into account any of the damping mechanisms. The reconsideration of the SD is performed within the framework the linear response theory. Working in the setting of the strong anharmonic coupling theory and the adiabatic approximation, the simplified expression of the classical SD, in the absence of dampings, is equated to be ICl(ω) = Re[∫0∞GCl(t)e-iΩt dt] in which the classical-like autocorrelation function (ACF), GCl(t), is given by GCl(t) = tr{ρ(β){μ(0)}{μ(t)}†}. With this consideration, we have shown that the classical SD is equivalent to the line shape obtained by F(ω) = ΩICl(ω), which in turn is equivalent to the quantum SD given by IQu(ω) = Re[∫0∞GQu(t)e-iΩt dt], where GQu(t) is the corresponding quantum ACF having for expression GQu(t) = (1/β) tr{ρ∫0β[μ(0)}{μ(t + iλℏ)}† dλ}. Thus, we have shown that for weak H-bonds dealt without dampings, the SDs obtained by the quantum approaches are equivalent to the SDs geted by the classical approach in which the incepation ACF is, however, of quantum nature and where the line shape is the Fourier transform of the ACF times the angular frequency. It is further shown that the classical approach dealing with the SD of weak H-bonds leads identically to the result found by Maréchal and Witkowski in their pioneering quantum treatment where they ignored the linear response theory and dampings.
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Affiliation(s)
- Najeh Rekik
- Physics Department, Faculty of Science, University of Ha'il , Kingdom of Saudi Arabia.,Department of Chemistry, University of Alberta , Edmonton, Alberta T6G 2G2, Canada
| | - Jamal Suleiman
- Physics Department, College of Science, King Faisal University , Al Ahsa 31982, Kingdom of Saudi Arabia
| | - Paul Blaise
- Laboratoire de Mathématiques et Physique (LAMPS), Université de Perpignan Via Domitia (UPVD) , 52 Av. Paul Alduy, 66860 Perpignan Cedex, France
| | - Marek J Wojcik
- Laboratory of Molecular Spectroscopy, Faculty of Chemistry, Jagiellonian University , Gronostajowa 2, 30-387 Krakow, Poland
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Rekik N, Alshammari MF. Electrical anharmonicity and dampings contributions to Cl- H→ stretching band in gaseous (CH 3 ) 2 O…HCl complex: Quantum dynamic study and prediction of the temperature effects. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.04.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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34
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Rekik N. Signature of Congregated Effects of Mechanical and Electrical Anharmonicities, Fermi Resonances, and Dampings on the IR Spectra of Hydrogen Bonded Systems: Quantum Dynamic Study. J Phys Chem A 2017; 121:3555-3566. [DOI: 10.1021/acs.jpca.7b01616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Najeh Rekik
- Physics
Department, Faculty of Science, University of Ha’il, Ha’il, 81451, Kingdom of Saudi Arabia
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Rekik N, Suleiman J, Blaise P, Wojcik MJ, Flakus HT, Nakajima T. Electrical anharmonicity in hydrogen bonded systems: complete interpretation of the IR spectra of the Cl-H[combining right harpoon above] stretching band in the gaseous (CH 3) 2OHCl complex. Phys Chem Chem Phys 2017; 19:5917-5931. [PMID: 28177021 DOI: 10.1039/c7cp00165g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Following the previous developments to simulate the fully infrared spectra of weak hydrogen bond systems within the linear response theory, an extension of the adiabatic model is presented here. A general formulation including the electrical anharmonicities in the calculation of the damped autocorrelation function of weak H-bonds is adopted to facilitate the support of the additional properties, and thus the IR spectra of the Cl-H[combining right harpoon above] stretching band in the gaseous (CH3)2OHCl complex. We have explored the origins of the broadening of the Cl-H[combining right harpoon above] stretching band. We found that the main features of the lineshape are attributed to electrical anharmonicity as a consequence of the large mixed second derivatives of the dipole moment with respect to the Cl-H[combining right harpoon above] bond and of the intermonomer elongations . In addition to providing more accurate theoretical band shapes, inclusion of the electrical anharmonicity in the present model paves the way for a more complete interpretation by generating three new Franck-Condon superposed distributions.
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Affiliation(s)
- Najeh Rekik
- Physics Department, Faculty of Science, University of Ha'il, Kingdom of Saudi Arabia. and Laboratoire de Physique Quantique, Faculté des Sciences de Monastir, 5019 Monastir, Tunisia.
| | - Jamal Suleiman
- Physics Department, Faculty of Science, University of Ha'il, Kingdom of Saudi Arabia.
| | - Paul Blaise
- LAMPS, Université de Perpignan Via Domitia, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France
| | - Marek J Wojcik
- Laboratory of Molecular Spectroscopy, Faculty of Chemistry, Jagiellonian University, Ingardena, 3, 30-060 Kraków, Poland
| | - Henryk T Flakus
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, Pl-40-006 Katowice, Poland
| | - Takahito Nakajima
- RIKEN Advanced Institute for Computational Science, 7-1-26 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
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Ghalla H, Rekik N, Michta A, Oujia B, Flakus HT. Theoretical modeling of infrared spectra of the hydrogen and deuterium bond in aspirin crystal. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:37-47. [PMID: 19884041 DOI: 10.1016/j.saa.2009.09.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 09/06/2009] [Accepted: 09/13/2009] [Indexed: 05/28/2023]
Abstract
An extended quantum theoretical approach of the nu(X-H) IR lineshape of cyclic dimers of weakly H-bonded species is proposed. We have extended a previous approach [M.E.-A. Benmalti, P. Blaise, H.T. Flakus, O. Henri-Rousseau, Chem. Phys. 320 (2006) 267] by accounting for the anharmonicity of the slow mode which is described by a "Morse" potential in order to reproduce the polarized infrared spectra of the hydrogen and deuterium bond in acetylsalicylic acid (aspirin) crystals. From comparison of polarized IR spectra of isotopically neat and isotopically diluted aspirin crystals it resulted that centrosymmetric aspirin dimer was the bearer of the crystal main spectral properties. In this approach, the adiabatic approximation is performed for each separate H-bond bridge of the dimer and a strong non-adiabatic correction is introduced into the model via the resonant exchange between the fast mode excited states of the two moieties. Within the strong anharmonic coupling theory, according to which the X-H...Y high-frequency mode is anharmonically coupled to the H-bond bridge, this model incorporated the Davydov coupling between the excited states of the two moieties, the quantum direct and indirect dampings and the anharmonicity for the H-bond bridge. The spectral density is obtained within the linear response theory by Fourier transform of the damped autocorrelation functions. The evaluated spectra are in fairly good agreement with the experimental ones by using a minimum number of independent parameters. The effect of deuteration has been well reproduced by reducing simply the angular frequency of the fast mode and the anharmonic coupling parameter.
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Affiliation(s)
- Houcine Ghalla
- Laboratoire de Physique Quantique, Faculté des Sciences de Monastir, 5000 route de Kairouan, Tunisia
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