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Yadav A, Mustafa MA, Suleman AD, Al-Shami KR, Mahdi MS, Al-Tameemi AR, Ramadan MF, Yousif ZS, Joui R, Khuder SA, Alhadrawi M. Phographene as a new carbon allotrope for adsorption and detection of SO 2, AsH 3, NO 2, CF 3H, and CO 2 air pollutant gaseous species. J Mol Model 2024; 30:297. [PMID: 39085447 DOI: 10.1007/s00894-024-06063-3] [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: 05/27/2024] [Accepted: 07/04/2024] [Indexed: 08/02/2024]
Abstract
CONTEXT Phographene and its family member structures are of the newly proposed semiconductors for detection of chemicals. That is, in this project, the potential of using α-phographene (α-POG) both for adsorption and detection of five types of the most important air pollutant gases containing SO2, AsH3, CF3H, NO2, and CO2 species were investigated. The results of the time dependent density functional theory (TD-DFT) calculations indicate that during the adsorption of NO2, and SO2 by the sorbent, big redshifts occur (up to 866.2 nm, and 936.5, respectively) resulting in considerable changes in the orbitals and the electronic structures of the systems. Moreover, the results of the thermodynamic calculations reveal that α-POG could selectively adsorb SO2, NO2, and AsH3 gases (with different orders), but it could not adsorb the two other gases.Finally, the outcome of the band gap calculations shows that between all mentioned gases, α-POG could selectively detect the presence of SO2, and then NO2; while, this nanosheet could not sense the existence of AsH3, CF3H, or CO2 gases. METHODS All of the calculations were carried out by using the Gaussian 03 quantum chemical package. In addition, the physiochemical parameters were extracted from the output files for further calculations. Studies on all saddle points and the following calculations were performed applying the B3LYP/6-311g(d,p) level of theory.
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Affiliation(s)
- Anupam Yadav
- Department of Chemistry, School of Sciences, Jain (Deemed-to-be) University, Bengaluru, Karnataka, 560069, India
- Department of Sciences, Vivekananda Global University, Jaipur, Rajasthan, 303012, India
| | - Mohammed Ahmed Mustafa
- Department of Medical Laboratory Technology, University of Imam Jaafar AL-Sadiq, Baghdad, Iraq.
| | | | - Karar R Al-Shami
- College of Science, Department of Forensic Sciences, National University of Science and Technology, Dhi Qar, 64001, Iraq
| | | | | | | | | | - Raheem Joui
- Technical Engineering College, Al-Esraa University, Baghdad, Iraq
| | | | - Merwa Alhadrawi
- Department of Refrigeration and Air Conditioning Techniques, College of Technical Engineering, The Islamic University, Najaf, Iraq.
- Department of Refrigeration and Air Conditioning Techniques, College of Technical Engineering, The Islamic University of Al Diwaniyah, Al Diwaniyah, Iraq.
- Department of Refrigeration and Air Conditioning Techniques, College of Technical Engineering, The Islamic University of Babylon, Babylon, Iraq.
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Ahmed MT, Roy D, Roman AA, Islam S, Ahmed F. Ab Initio Study of the Graphyne-like γ-SiC Nanoflake for Toxic Gas-Sensing Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:15332-15352. [PMID: 38995997 DOI: 10.1021/acs.langmuir.4c02133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
This study focuses on the geometrical, electronic, and optical properties of the γ-graphyne-like novel γ-SiC nanoflake of the γ-silicon carbide (SiC) monolayer using density functional theory calculations. γ-SiC was revealed to be a stable semiconducting nanoflake confirmed by a negative cohesive energy, real vibrational frequencies, and a 1.749 eV energy gap. The adsorption of COCl2, HCN, PH3, AsH3, CNCl, and C2N2 toxic gases on the γ-SiC nanoflake is also studied, which revealed an attractive gas-nanoflake interaction with the adsorption energy ranging from -0.21 to -0.38 eV. The adsorption results in a significant charge transfer between gas-adsorbent complexes. A significant variation in the energy gap and electrical conductivity was observed due to gas adsorption. γ-SiC showed maximum sensitivity at room temperature for CNCl gas. The entire process of adsorption is exothermic and thermodynamically stable. γ-SiC showed a high absorption coefficient over 104 orders with a significant variation in the absorption peak intensity and blue peak shifting. According to the quantum theory and reduced density gradient analysis, all of the gases are physisorbed on the γ-SiC nanoflake due to van der Waals interactions. The obtained results signify the usability of γ-SiC as a potential toxic gas sensor.
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Affiliation(s)
- Mohammad Tanvir Ahmed
- Department of Physics, Jashore University of Science and Technology, Jashore7408, Bangladesh
| | - Debashis Roy
- Department of Physics, Jashore University of Science and Technology, Jashore7408, Bangladesh
| | - Abdullah Al Roman
- Department of Physics, Jashore University of Science and Technology, Jashore7408, Bangladesh
| | - Shariful Islam
- Department of Physics, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Farid Ahmed
- Department of Physics, Jahangirnagar University, Dhaka 1342, Bangladesh
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Niamat Y, Yaqoob J, Khan MU, Hussain R, Gilani MA, Hassan AU, Ahamad T. Investigating the potential of monocyclic B 9N 9 and C 18 rings for the electrochemical sensing, and adsorption of carbazole-based anti-cancer drug derivatives: DFT-based first-principle study. J Mol Model 2024; 30:245. [PMID: 38960925 DOI: 10.1007/s00894-024-06049-1] [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: 04/22/2024] [Accepted: 06/25/2024] [Indexed: 07/05/2024]
Abstract
CONTEXT For the first time, the use of monocyclic rings C18 and B9N9 as sensors for the sensing of carbazole-based anti-cancer drugs, such as tetrahydrocarbazole (THC), mukonal (MKN), murrayanine (MRY), and ellipticine (EPT), is described using DFT simulations and computational characterization. The geometries, electronic properties, stability studies, sensitivity, and adsorption capabilities of C18 and B9N9 counterparts towards the selected compounds confirm that the analytes interact through active cavities of the C18 and B9N9 rings of the complexes. METHODS Based on the interaction energies, the sensitivity of surfaces towards EPT, MKN, MRY, and THC analytes is observed. The interaction energy of EPT@B9N9, MKN@B9N9, MRY@B9N9, and THC@B9N9 complexes are observed - 20.40, - 19.49, - 20.07, and - 18.27 kcal/mol respectively which is more exothermic than EPT@C18, MKN@C18, MRY@C18, and THC@C18 complexes are - 16.37, - 13.97, - 13.96, and - 11.39 kcal/mol respectively. According to findings from the quantum theory of atoms in molecules (QTAIM) and the reduced density gradient (RDG), dispersion forces play a significant role in maintaining the stability of these complexes. The electronic properties including FMOs, density of states (DOS), natural bond orbitals (NBO), charge transfer, and absorption studies are carried out. In comparison of B9N9 and C18, the analyte recovery time for C18 is much shorter (9.91 × 10-11 for THC@C18) than that for B9N9 shorter recovery time value of 3.75 × 10-9 for EPT@B9N9. These results suggest that our reported sensors B9N9 and C18 make it faster to detect adsorbed molecules at room temperature. The sensor response is more prominent in B9N9 due to its fine energy gap and high adsorption energy. Consequently, it is possible to think of these monocyclic systems as a potential material for sensor applications.
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Affiliation(s)
- Yumna Niamat
- Department of Chemistry, University of Okara, Okara, -56300, Pakistan
| | - Junaid Yaqoob
- Department of Chemistry, University of Okara, Okara, -56300, Pakistan.
- Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, 54600, Pakistan.
| | | | - Riaz Hussain
- Department of Chemistry, University of Okara, Okara, -56300, Pakistan
| | - Mazhar Amjad Gilani
- Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, 54600, Pakistan
| | - Abrar Ul Hassan
- Lunan Research Institute, Beijing Institute of Technology, 888 Zhengtai Road, Tengzhou, 277599, China
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
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Duraisamy PD, S PMP, Gopalan P, Angamuthu A. Enhanced hydrogen storage of alkaline earth metal-decorated B n (n = 3-14) nanoclusters: a DFT study. J Mol Model 2024; 30:55. [PMID: 38291281 DOI: 10.1007/s00894-024-05847-x] [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: 10/31/2023] [Accepted: 01/16/2024] [Indexed: 02/01/2024]
Abstract
CONTEXT Boron-based nanostructures hold significant promise for revolutionizing hydrogen storage technologies due to their exceptional properties and potential in efficiently accommodating and interacting with hydrogen molecules. In this paper, boron-based Bn (n = 3-14) nanoclusters decorated with alkaline earth metals (AEM = Ca and Be) were investigated for hydrogen storage applications based on density function theory (DFT) calculations. To evaluate H2 adsorption capability, the adsorption energies, frontier molecular orbitals (FMOs), natural bond orbital (NBO), and quantum theory of atoms in molecule (QTAIM) analysis are performed. The primary aim of this research work is to achieve targeted value of 5.5 wt% set by the US Department of Energy (DOE) for the year 2025. The results revealed that B5Ca2, B6Ca2, and B10Ca2 structures have the ability to hold up to 12H2 molecules with gravimetric capacities of 15.20, 14.21, and 8.60 wt%, respectively, when compared to other boron structures decorated with calcium. Similarly, for Be-decorated structure, B3Be2 structure can accommodate 3H2 molecules with gravimetric capacity of 10.59 wt%. The result of this study indicates that AEM-decorated Bn nanoclusters hold great promise as potential materials for hydrogen storage. METHODS Density functional theory (DFT) approach at ωB97XD/6-311++G(d,p) level of theory is employed to investigate the possibility of storing H2 molecules on alkaline earth metal (AEM = Ca and Be)-decorated Bn (n = 3-14) nanoclusters. All DFT computations were performed using Gaussian 09 software. To calculate frontier molecular orbitals (FMOs) and quantum theory of atoms in molecule (QTAIM) analysis, we have used GaussView and Multiwfn software, respectively.
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Affiliation(s)
- Parimala Devi Duraisamy
- Department of Physical Sciences, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641114, India
| | - Prince Makarios Paul S
- Department of Physical Sciences, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641114, India
| | - Praveena Gopalan
- Department of Physics, PSGR Krishnammal College for Women, Coimbatore, Tamil Nadu, 641004, India
| | - Abiram Angamuthu
- Department of Physical Sciences, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, 641114, India.
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Chandra S, Yasin Y, Pouralimardan O, Majedi S, Azizi B, Jalali Sarvestani MR, Vessally E. Theoretical study on efficient HF gas sensing by functionalized, decorated, and doped nanocone strategy. J Mol Graph Model 2023; 124:108574. [PMID: 37540937 DOI: 10.1016/j.jmgm.2023.108574] [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: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/06/2023]
Abstract
Hydrogen fluoride (HF) is a highly dangerous and corrosive gas that can cause severe burns and respiratory damage. The density functional theory method (DFT) used to study the interaction between the HF gas and the surface of a carbon nanocone (CNC) doped with gallium atom as a chemical sensor. The results showed that CNC wasn't a good candidate to sense the HF gas and consequently its electrical properties are changed insignificant. To improve the properties of the CNC, several strategies were tried: functionalizing by pyridinol (Pyr) and pyridinol oxide (PyrO), decorated with metals (M = B, Al, and Ga), and doped with element of third group (M = B, Al, and Ga). The obtained data demonstrated that the promising results were obtained by doping the CNC with Ga atom. After full optimization, we achieved one stable configuration between the HF gas and CNC-Ga structure (S15 configuration) with Eads = -19.86 kcal/mol. The electronic properties of the CNC-Ga structure is sensible changed after the HF molecule is adsorbed. According to calculated the energy gap between HOMO and LUMO orbitals of S15 configuration are increased which could be applied a chemical signal. Eventually, one could propose that the CNC-Ga has the ability to act as a Φ-type sensor based on its physical adsorption energy and quick recovery time and doped with gallium atom is a promising strategy.
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Affiliation(s)
- Subhash Chandra
- Department of Electrical Engineering, GLA University, Mathura, 281406, India
| | - Yaser Yasin
- Medical Technical College, Al-Farahidi University, Iraq
| | | | - Soma Majedi
- Department of Medical Analysis, Faculty of Applied Science, Tishk International University, Erbil, Kurdistan Region, Iraq
| | - Bayan Azizi
- Medical Laboratory Sciences Department, College of Health Sciences, University of Human Development, Sulaymaniyah, Iraq
| | | | - Esmail Vessally
- Department of Chemistry, Payame Noor University, Tehran, Iran.
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Gul S, Kainat, Ali Q, Khan M, Ur Rehman M, AlAsmari AF, Alasmari F, Alharbi M. Exploring the promising application of Be 12O 12 nanocage for the abatement of paracetamol using DFT simulations. Sci Rep 2023; 13:18481. [PMID: 37898689 PMCID: PMC10613287 DOI: 10.1038/s41598-023-45674-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/22/2023] [Indexed: 10/30/2023] Open
Abstract
The removal of paracetamol from water is of prime concern because of its toxic nature in aquatic environment. In the present research, a detailed DFT study is carried out to remove paracetamol drug from water with the help of Be12O12 to eliminate the related issues. Three different geometries (CMP-1, CMP-2, CMP-3,) are obtained with the highest adsorption energies value (Eads) of - 31.2316 kcal/mol for CMP-3 without any prominent structural change. It is observed from the study that O atom from the carbonyl group (C=O) and H atom from O-H group successfully interact with O and Be atoms of the nanocage respectively. Natural bonding orbitals analysis reveals charge transfer to paracetamol drug from Be12O12 nanocage with maximum charge transfer of - 0.159 e for CMP-3 with bond angle of 1.65 Å confirming the stability of the CMP-3 among the optimized complexes. The quantum theory of atoms in molecule concludes that the interaction between paracetamol drug molecule and Be12O12 is purely closed-shell weak electrostatic in nature in CMP-1 and CMP-3 and shared interaction in CMP-2. The thermodynamics analysis witnesses that the process is exothermic and spontaneous. The regeneration study reveals the reversible nature of the adsorbent. The overall study presents Be12O12 nanocage as a potential adsorbent and may be used in future for the purification of water from a number of emerging pollutants.
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Affiliation(s)
- Sana Gul
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan
| | - Kainat
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan
| | - Qaisar Ali
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan
| | - Momin Khan
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan.
| | - Munir Ur Rehman
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, No. 4, Linyuan Road, Harbin, 150040, People's Republic of China
| | - Abdullah F AlAsmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh, 11451, Riyadh, Saudi Arabia
| | - Fawaz Alasmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh, 11451, Riyadh, Saudi Arabia
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh, 11451, Riyadh, Saudi Arabia
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Doust Mohammadi M, Abbas F, Arshad M, Shafiq F, Louis H, Unimuke TO, Rasaki ME. Increasing the Photovoltaic Power of the Organic Solar Cells by Structural Modification of the R-P2F-Based Materials. J Mol Model 2023; 29:237. [PMID: 37420131 DOI: 10.1007/s00894-023-05652-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/05/2023] [Indexed: 07/09/2023]
Abstract
CONTEXT The present study aims to improve the performance of optoelectronics and photovoltaics by constructing an acceptor-donor-acceptor (A-D-A) molecule with a fullerene-free acceptor moiety. The study utilizes malononitrile and selenidazole derivatives to tailor the molecule for enhanced photovoltaic abilities. The study analyzes molecular properties and parameters like charge density, charge transport, UV absorption spectra, exciton binding energies, and electron density difference maps to determine the effectiveness of the tailored derivatives. METHODS To optimize the geometric structures, the study used four different functionals (B3LYP, CAM-B3LYP, MPW1PW91, and ɷB97XD) along with a double zeta valence basis set 6-31G(d, p) basis set. The study compared the results of the tailored derivatives with a reference molecule (R-P2F) to determine improvements in performance. The light harvesting efficiency of the molecules was analyzed by performing simulations in the gas and solvent phases (chloroform) based on the spectral overlap between the solar irradiance and the absorption spectra of the molecules. The open-circuit voltage (VOC) of each molecule was also analyzed, representing the maximum voltage that can be obtained from the cell under illuminated conditions. The findings indicated that the M1-P2F designed derivative is a more effective, with energy gap of 2.14 eV, and suitable candidate for non-fullerene organic solar cell application, based on various analyses such as power conversion efficiency, quantum chemical reactivity parameters, and electronic features.
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Affiliation(s)
| | - Faheem Abbas
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, People's Republic of China
- Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Muhammad Arshad
- Department of Chemistry, National Sun Yat-Sen University, 70 Lien-Hai Road, Kaohsiung, 80424, Taiwan
| | - Faiza Shafiq
- Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B 1115, Nigeria
| | - Tomsmith O Unimuke
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B 1115, Nigeria
| | - Michael E Rasaki
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B 1115, Nigeria
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Doust Mohammadi M, Louis H, Chukwu UG, Bhowmick S, Rasaki ME, Biskos G. Gas-Phase Interaction of CO, CO 2, H 2S, NH 3, NO, NO 2, and SO 2 with Zn 12O 12 and Zn 24 Atomic Clusters. ACS OMEGA 2023; 8:20621-20633. [PMID: 37323380 PMCID: PMC10268014 DOI: 10.1021/acsomega.3c01177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023]
Abstract
Atmospheric pollutants pose a high risk to human health, and therefore it is necessary to capture and preferably remove them from ambient air. In this work, we investigate the intermolecular interaction between the pollutants such as CO, CO2, H2S, NH3, NO, NO2, and SO2 gases with the Zn24 and Zn12O12 atomic clusters, using the density functional theory (DFT) at the meta-hybrid functional TPSSh and LANl2Dz basis set. The adsorption energy of these gas molecules on the outer surfaces of both types of clusters has been calculated and found to have a negative value, indicating a strong molecular-cluster interaction. The largest adsorption energy has been observed between SO2 and the Zn24 cluster. In general, the Zn24 cluster appears to be more effective for adsorbing SO2, NO2, and NO than Zn12O12, whereas the latter is preferable for the adsorption of CO, CO2, H2S, and NH3. Frontier molecular orbital (FMO) analysis showed that Zn24 exhibits higher stability upon adsorption of NH3, NO, NO2, and SO2, with the adsorption energy falling within the chemisorption range. The Zn12O12 cluster shows a characteristic decrease in band gap upon adsorption of CO, H2S, NO, and NO2, suggesting an increase in electrical conductivity. Natural bond orbital (NBO) analysis also suggests the presence of strong intermolecular interactions between atomic clusters and the gases. This interaction was recognized to be strong and noncovalent, as determined by noncovalent interaction (NCI) and quantum theory of atoms in molecules (QTAIM) analyses. Overall, our results suggest that both Zn24 and Zn12O12 clusters are good candidate species for promoting adsorption and, thus, can be employed in different materials and/or systems for enhancing interaction with CO, H2S, NO, or NO2.
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Affiliation(s)
| | - Hitler Louis
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar 540221, Nigeria
| | - Udochukwu G. Chukwu
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar 540221, Nigeria
| | - Somnath Bhowmick
- Climate
and Atmosphere Research Centre, The Cyprus
Institute, Nicosia 2121, Cyprus
| | - Michael E. Rasaki
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar 540221, Nigeria
| | - George Biskos
- Climate
and Atmosphere Research Centre, The Cyprus
Institute, Nicosia 2121, Cyprus
- Faculty
of Civil Engineering and Geosciences, Delft
University of Technology, Delft 2628CN, The Netherlands
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Ogunwale G, Louis H, Unimuke TO, Mathias GE, Owen AE, Edet HO, Enudi OC, Oluwasanmi EO, Adeyinka AS, Doust Mohammadi M. Interaction of 5-Fluorouracil on the Surfaces of Pristine and Functionalized Ca 12O 12 Nanocages: An Intuition from DFT. ACS OMEGA 2023; 8:13551-13568. [PMID: 37091381 PMCID: PMC10116506 DOI: 10.1021/acsomega.2c03635] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 01/11/2023] [Indexed: 05/03/2023]
Abstract
The utilization of nanostructured materials for several biomedical applications has tremendously increased over the last few decades owing to their nanosizes, porosity, large surface area, sensitivity, and efficiency as drug delivery systems. Thus, the incorporation of functionalized and pristine nanostructures for cancer therapy offers substantial prospects to curb the persistent problems of ineffective drug administration and delivery to target sites. The potential of pristine (Ca12O12) and formyl (-CHO)- and amino (-NH2)-functionalized (Ca12O12-CHO and Ca12O12-NH2) derivatives as efficient nanocarriers for 5-fluorouracil (5FU) was studied at the B3LYP-GD3(BJ)/6-311++G(d,p) theoretical level in two electronic media (gas and solvent). To effectively account for all adsorption interactions of the drug on the investigated surfaces, electronic studies as well as topological analysis based on the quantum theory of atoms in molecules (QTAIM) and noncovalent interactions were exhaustively utilized. Interestingly, the obtained results divulged that the 5FU drug interacted favorably with both Ca12O12 and its functionalized derivatives. The adsorption energies of pristine and functionalized nanostructures were calculated to be -133.4, -96.9, and -175.6 kcal/mol, respectively, for Ca12O12, Ca12O12-CHO, and Ca12O12-NH2. Also, both topological analysis and NBO stabilization analysis revealed the presence of interactions among O3-H32, O27-C24, O10-C27, and N24-H32 atoms of the drug and the surface. However, 5FU@Ca12O12-CHO molecules portrayed the least adsorption energy due to considerable destabilization of the molecular complex as revealed by the computed deformation energy. Therefore, 5FU@Ca12O12 and 5FU@Ca12O12-NH2 acted as better nanovehicles for 5FU.
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Affiliation(s)
- Goodness
J. Ogunwale
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Chemistry, Faculty of Science, University
of Ibadan, Ibadan200005, Nigeria
| | - Hitler Louis
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar540221, Nigeria
| | - Tomsmith O. Unimuke
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar540221, Nigeria
| | - Gideon E. Mathias
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar540221, Nigeria
| | - Aniekan E. Owen
- School
of Chemistry, University of St Andrews, St AndrewsKY16 9ST, Scotland
| | - Henry O. Edet
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar540221, Nigeria
| | - Obieze C. Enudi
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Chemistry, Faculty of Science, University
of Ibadan, Ibadan200005, Nigeria
| | - Esther O. Oluwasanmi
- Computational
and Bio-Simulation Research Group, University
of Calabar, Calabar540221, Nigeria
- Department
of Chemistry, Faculty of Science, University
of Ibadan, Ibadan200005, Nigeria
| | - Adedapo S. Adeyinka
- Department
of Chemical Sciences, University of Johannesburg, Johannesburg2006, South-Africa
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Doust Mohammadi M, Abdullah HY, Biskos G, Bhowmick S. Adsorbing CNCl on pristine, C-, and Al-doped boron nitride nanotubes: A Density Functional Theory study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Jyothi M, Nagarajan V, Chandiramouli R. Choloromethane and bromomethane adsorption studies on hex-star phosphorene nanoribbon – a DFT insight. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Theoretical and experimental investigations of a gold nanosensor based on rhodamine-modified carbon nanotubes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Parimala devi D, Praveena G, Jeba Beula R, Abiram A. INVESTIGATION OF DIHYDROGEN BOND INTERACTION BETWEEN CYCLOALKENES AND ALKALI METAL HYDRIDES: A DFT APPROACH. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622040011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Interaction of the Serine Amino Acid with BNNT, BNAlNT, and BC2NNT. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-06916-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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16
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Mohammadi MD, Abdullah HY, Kalamse V, Chaudhari A. Interaction of Fluorouracil drug with boron nitride nanotube, Al doped boron nitride nanotube and BC2N nanotube. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Doust Mohammadi M, Abdullah HY, Kalamse VG, Chaudhari A. Interaction of halomethane CH3Z (Z = F, Cl, Br) with X12Y12 (X = B, Al, Ga & Y = N, P, As) nanocages. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2021.113544] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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18
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Mohammadi MD, Abdullah HY. DFT Study for Adsorbing of Bromine Monochloride onto BNNT (5,5), BNNT (7,0), BC 2NNT (5,5), and BC 2NNT (7,0). JOURNAL OF COMPUTATIONAL BIOPHYSICS AND CHEMISTRY 2021. [DOI: 10.1142/s2737416521500472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The study of intermolecular interactions is of great importance. This study attempted to quantitatively examine the interactions between bromine monochloride (BrCl) with pristine boron nitride nanotube (BNNT) armchair (5,5) and zigzag (7,0) as well as armchair (5,5) BC2NNT and zigzag (7,0) BC2NNT in vacuum. Quantum mechanical studies of such systems are possible in the density functional theory (DFT) framework. For this purpose, various functionals, such as B3LYP-D3, [Formula: see text]B97XD, and M062X, have been used. One of the most suitable basis functionals for the systems studied in this research is 6-311G (d), which has been used in both optimization calculations and calculations related to wave function analyses. The main part of this work is the study of various analyses that reveal the nature of the intermolecular interactions between the two components introduced above. The results of conceptual DFT, natural bond orbital, non-covalent interactions, and quantum theory of atoms in molecules (QTAIM) were consistent and in favor of physical adsorption in all systems. Gallium had more adsorption energy than other dopants. The HOMO–LUMO energy gaps were as follows: BNNT (5,5): 10.296, BNNT (7,0): 9.015, BC2NNT (5,5): 7.022, and BC2NNT (7,0): 5.979[Formula: see text]eV at B3LYP-D3/6-311G (d) model chemistry. The strongest interaction is related to the BC2NNT (7,0)/BrCl cluster: [Formula: see text][Formula: see text]eV. The results of QTAIM and NCI analysis identified the intermolecular interactions of the type of strong van der Waals interaction for these nanotubes. The sensitivity of the adsorption increased when a gas molecule interacted with carbon-doped BNNT, and the change in the frontier orbital gap could be used to design nanosensors to detect BrCl gas.
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Affiliation(s)
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, Erbil 44001, Kurdistan Region, Iraq
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19
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Non-covalent interactions of cysteine onto C 60, C 59Si, and C 59Ge: a DFT study. J Mol Model 2021; 27:330. [PMID: 34709483 DOI: 10.1007/s00894-021-04960-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/20/2021] [Indexed: 10/20/2022]
Abstract
The study of intermolecular interactions is of great importance. This study attempted to quantitatively examine the interactions between cysteine (C3H7NO2S) and fullerene nanocages, C60, in vacuum. As the frequent introduction of elements as impurities into the structure of nanomaterials can increase the intensity of intermolecular interactions, nanocages doped with silicon and germanium have also been studied as adsorbents, C59Si and C59Ge. Quantum mechanical studies of such systems are possible in the density functional theory (DFT) framework. For this purpose, various functionals, such as B3LYP-D3, ωB97XD, and M062X, have been used. One of the most suitable basis functionals for the systems studied in this research is 6-311G (d), which has been used in both optimization calculations and calculations related to wave function analyses. The main part of this work is the study of various analyses that reveal the nature of the intermolecular interactions between the two components introduced above. The results of conceptual DFT, natural bond orbital, non-covalent interactions, and quantum theory of atoms in molecules were consistent and in favor of physical adsorption in all systems. Germanium had more adsorption energy than other dopants. The HOMO-LUMO energy gaps were as follows: C60: 5.996, C59Si: 5.309, and C59Ge: 5.188 eV at B3LYP-D3/6-311 G (d) model chemistry. The sensitivity of the adsorption increased when an amino acid molecule interacted with doped C60, and this capability could be used to design nanocarrier to carry cysteine amino acid.
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Mohammadi MD, Abdullah HY, Kalamse V, Chaudhari A. Adsorption of alkali and alkaline earth ions on nanocages using density functional theory. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113391] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Mohammadi MD, Abdullah HY, Biskos G, Bhowmick S. Effect of Al- and Ga-doping on the adsorption of H 2 SiCl 2 onto the outer surface of boron nitride nanotube: a DFT study. CR CHIM 2021. [DOI: 10.5802/crchim.87] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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García-Toral D, Báez RM, Sánchez S JI, Flores-Riveros A, Cocoletzi GH, Rivas-Silva JF. Encapsulation of Pollutant Gaseous Molecules by Adsorption on Boron Nitride Nanotubes: A Quantum Chemistry Study. ACS OMEGA 2021; 6:14824-14837. [PMID: 34151064 PMCID: PMC8209793 DOI: 10.1021/acsomega.1c00413] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 05/13/2021] [Indexed: 06/13/2023]
Abstract
Based on density functional theory (DFT) and the semiempirical method PM7, we analyze the encapsulation process of polluting gases and/or their adsorption on different sites, viz., on the inner wall, the outer wall, and on the boron nitride (BN) nanotube ends, with chirality (7,7) armchair. DFT calculations are performed using the Perdew-Burke-Ernzerhof (PBE) functional and the M06-2X method through the 6-31G(d) divided valence orbitals as an atomic basis. Various geometrical configurations were optimized by minimizing the total energy for all analyzed systems, including the calculation of vibrational frequencies, which were assumed to be of a nonmagnetic nature, and where the total charge was kept neutral. Results are interpreted in terms of adsorption energy and electronic force, as well as on the analysis of quantum molecular descriptors for all systems considered. The study of six molecules, namely, CCl4, CS2, CO2, CH4, C4H10, and C6H12, in gas phase is addressed. Our results show that C4H10, C6H12, and CCl4 are chemisorbed on the inner surfaces (encapsulation) and on the nanotube ends. In contrast, the other molecules CS2, CO2, and CH4 show weak interaction with the nanotube surface, leading thereby to physisorption. Our findings thus suggest that this kind of polluting gases can be transported within nanotubes by encapsulation.
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Affiliation(s)
- Dolores García-Toral
- Facultad
de Ingeniería Química, Benemérita
Universidad Autónoma de Puebla, Avenida San Claudio y 18 Sur S/N Edifico 106A C.U.
San Manuel, 72570 Puebla, Mexico
| | - Raúl Mendoza Báez
- Facultad
de Ingeniería Química, Benemérita
Universidad Autónoma de Puebla, Avenida San Claudio y 18 Sur S/N Edifico 106A C.U.
San Manuel, 72570 Puebla, Mexico
| | - Jonatan I. Sánchez S
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Avenida San Claudio y Boulevard 18 Sur, Colonia San Manuel, 72570 Puebla, Mexico
| | - Antonio Flores-Riveros
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Avenida San Claudio y Boulevard 18 Sur, Colonia San Manuel, 72570 Puebla, Mexico
| | - Gregorio H. Cocoletzi
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Avenida San Claudio y Boulevard 18 Sur, Colonia San Manuel, 72570 Puebla, Mexico
| | - J. F. Rivas-Silva
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Avenida San Claudio y Boulevard 18 Sur, Colonia San Manuel, 72570 Puebla, Mexico
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Mohammadi MD, Abdullah HY, Suvitha A. The Adsorption of 1-Chloro-1,2,2,2-Tetrafluoroethane Onto the Pristine, Al-, and Ga-Doped Boron Nitride Nanosheet. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2021. [DOI: 10.1007/s40995-021-01117-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Zhang D, Liang R, Yang H, Song Y, Shi J, Zhang D, Yang L, Liu A. Formation of multiple helical structures induced by boron nitride nanotubes. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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25
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Mohammadi MD, Abdullah HY, Bhowmick S, Biskos G. Theoretical investigation of X12O12 (X = Be, Mg, and Ca) in sensing CH2N2: A DFT study. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113168] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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26
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The adsorption of bromochlorodifluoromethane on pristine, Al, Ga, P, and As-doped boron nitride nanotubes: A study involving PBC-DFT, NBO analysis, and QTAIM. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2020.113047] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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27
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Doust Mohammadi M, Abdullah HY. Adsorption of 1-chloro-1,2,2,2-tetrafluoroethane on pristine, Al, Ga-doped boron nitride nanotubes: a study involving PBC-DFT, NBO analysis, and QTAIM. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0309] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In the present investigation, the feasibility of detecting the 1-chloro-1,2,2,2-tetrafluoroethane gas molecule on the outer surface of pristine single-walled boron nitride nanotube, as well as its aluminium- and gallium-doped structures, was carefully evaluated. For achieving this goal, a periodic boundary condition density functional theory level of study using both HSE06 and B3LYP-D3 functionals together with a 6-311G(d) basis set has been used. Subsequently, the CAM-B3LYP, ωB97XD, and M06-2X functionals with a 6-311G(d) basis set were also employed to consider the single point energies. Natural bond orbital and quantum theory of atoms in molecules were implemented by using the HSE06/6-311G(d) method and the results were compatible with the electronic properties. In this regard, the total density of state, the Wiberg bond index, natural charge, natural electron configuration, donor–acceptor natural bond orbital interactions, and the second-order perturbation energies are performed to explore the nature of the intermolecular interactions. All of the energy calculations and population analyses show that by adsorbing of the gas molecule onto the surface of the considered nanostructures, the intermolecular interactions are of the type of strong chemical adsorption. Between the doped nanotubes, aluminium-doped nanotube has very high adsorption energy compared with gallium. Generally, it was revealed that the sensitivity of the adsorption will be increased when the gas molecule interacts with decorated nanotubes and decrease the HOMO–LUMO band gap; therefore, the change of electronic properties can be used to design suitable nanosensors.
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Affiliation(s)
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, 44001, Erbil, Iraq
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Mohammadi MD, Salih IH, Abdullah HY. The adsorption of chlorofluoromethane on pristine and Ge-doped silicon carbide nanotube: a PBC-DFT, NBO, and QTAIM study. MOLECULAR SIMULATION 2020. [DOI: 10.1080/08927022.2020.1834103] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Idris H. Salih
- Physics Education Department, Faculty of Education, Tishk International University, Erbil, Iraq
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education, Tishk International University, Erbil, Iraq
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29
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Doust Mohammadi M, Abdullah HY. The Adsorption of Chlorofluoromethane on Pristine, Al‐, Ga‐, P‐, and As‐doped Boron Nitride Nanotubes: A PBC‐DFT, NBO, and QTAIM Study. ChemistrySelect 2020. [DOI: 10.1002/slct.202003367] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Hewa Y. Abdullah
- Physics Education Department, Faculty of Education Tishk International University Erbil 44001 Iraq
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30
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Intermolecular C-H∙∙∙H-M dihydrogen bonds in five-membered heterocyclic complexes: a DFT and ab-initio study. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02680-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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31
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The adsorption of chlorofluoromethane on pristine, and Al- and Ga-doped boron nitride nanosheets: a DFT, NBO, and QTAIM study. J Mol Model 2020; 26:287. [PMID: 32980919 DOI: 10.1007/s00894-020-04556-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/17/2020] [Indexed: 10/23/2022]
Abstract
In the present investigation, the feasibility of detecting the chlorofluoromethane (CFM) gas molecule onto the outer surface of pristine single layer boron nitride nanosheet (BNNS), as well as its aluminum (Al)- and gallium (Ga)-doped structures, was carefully evaluated. For achieving this goal, a density functional theory level of study using the Perdew, Burke, and Ernzerhof exchange-correlation (PBEPBE) functional together with a 6-311G(d) basis set has been used. Subsequently, the B3LYP, CAM-B3LYP, wB97XD, and M062X functionals with a 6-311G(d) basis set were also employed to consider the single-point energies. Natural bond orbital (NBO) and quantum theory of atoms in molecules (QTAIM) were implemented by using the B3LYP-D3/6-311G(d) method, and the results were compatible with the electronic properties. In this regard, the total density of states (TDOSs), the Wiberg bond index (WBI), natural charge, natural electron configuration, donor-acceptor natural bond orbital interactions, and the second-order perturbation energies are performed to explore the nature of the intermolecular interactions. All of the energy calculations and population analyses denote that by adsorbing of the gas molecule onto the surface of the considered nanostructures, the intermolecular interactions are of the type of strong chemical adsorption. Among the doped nanosheets, Ga-doped nanosheet has very high adsorption energy compared with other elements (i.e., Ga-doped > Al-doped > pristine). Generally, it was revealed that the sensitivity of the adsorption will be increased when the gas molecule interacts with decorated nanosheets and decrease the HOMO-LUMO band gap; therefore, the change of electronic properties can be used to design suitable nanosensors to detect CFM gas. Graphical abstract.
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32
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Doust Mohammadi M, Abdullah HY. The adsorption of bromochlorodifluoromethane on pristine and Ge-doped silicon carbide nanotube: a PBC-DFT, NBO, and QTAIM study. Struct Chem 2020. [DOI: 10.1007/s11224-020-01646-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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33
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Bhuvaneswari R, Nagarajan V, Chandiramouli R. Halomethane Adsorption Studies on Silicane Sheets: A First-Principles Perception. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01488-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Yang Y, Li F, Yang C, Jia L, Yang L, Xia F, Peng J. Effect of Substitution for Insertion of CO2 into Epoxides and Aziridines: An Ab Initio Study. Aust J Chem 2020. [DOI: 10.1071/ch19296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The insertion of CO2 into epoxides and aziridines has been studied using density functional theory (B3LYP) and ab initio (MP2) methods, and the effect of substitution for the two reactions are further explored. It is found that the reactivity of epoxides and aziridines are similar, and insertion of CO2 proceeds through a concerted mechanism. The substitutions of methyl and phenyl does not change the reaction mechanism, but the transition state for the substitution on the attacking position becomes loose with a lower free energy barrier. The substitutions of methyl and phenyl decrease the free energy barrier, with phenyl substitution having a greater affect. The results also show that the free energy barriers for the insertions of CO2 into aziridines are ~10kcalmol−1 lower than the corresponding reactions of CO2 with epoxides.
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Nemati-Kande E, Abbasi M, Mohammadi MD. Feasibility of Pristine and Decorated AlN and SiC Nanotubes in Sensing of Noble Gases: A DFT study. ChemistrySelect 2019. [DOI: 10.1002/slct.201803934] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Ebrahim Nemati-Kande
- Department of Physical Chemistry; Faculty of Chemistry; Urmia University; Urmia Iran
| | - Mahdi Abbasi
- School of Chemistry; College of Science; University of Tehran; Tehran 14176 Iran
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