1
|
Hoat DM, Dien VK, Ho QD, Dam DP, Tien NT, Nguyen DK. Rich essential properties of silicon-substituted graphene nanoribbons: a comprehensive computational study. Phys Chem Chem Phys 2024; 26:15939-15956. [PMID: 38691388 DOI: 10.1039/d4cp00290c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
The diverse structural, electronic, and magnetic properties of silicon (Si)-substituted armchair and zigzag graphene nanoribbons (AGNRs and ZGNRs) were investigated using spin-polarized density functional theory (DFT) calculations. Pristine AGNRs belong to a nonmagnetic semiconductor with a direct bandgap of 1.63/1.92 eV determined by PBE/HSE06 functionals. Under various Si substitutions, nonmagnetic bandgaps were tuned at 1.49/1.87, 1.06/1.84, 0.81/1.45, 1.04/1.71, 0.89/1.05, and 2.38/3.0 eV (PBE/HSE06) in the single Si edge-, single Si non-edge-, double Si ortho-, double Si meta-, double Si para-, and 100% Si-substituted AGNR configurations, respectively. Meanwhile, pristine ZGNRs displayed antiferromagnetic semiconducting behavior with a spin degenerate bandgap of 0.52/0.81 eV (PBE/HSE06) and becomes a ferromagnetic semimetal in the single Si configurations or an unusual ferromagnetic semiconductor in the 100% Si configuration. Under the developed first-principles theoretical framework, the formation of quasi π (C-2pz and Si-3pz) and quasi σ (C-2s, -2pxy and Si-3s and -3pxy) bands was identified in the Si-substituted configurations. These quasi π and quasi σ bands showed weak separation, resulting in weak quasi sp2 hybridization in Si-C bonds, in which the identified hybridization mechanism was a strong evidence for the formation of stable planar 1D structures in the Si-substituted configurations. Our complete revelation of the essential properties of Si-substituted GNRs can provide a complete understanding of their chemically doped 1D materials for various practical applications.
Collapse
Affiliation(s)
- D M Hoat
- Institute of Theoretical and Applied Research, Duy Tan University, Ha Noi 100000, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, Vietnam
| | - Vo Khuong Dien
- Division of Applied Physics, Dong Nai Technology University, Bien Hoa City, Vietnam.
- Faculty of Engineering, Dong Nai Technology University, Bien Hoa City, Vietnam
| | - Quoc Duy Ho
- Department of Mathematics and Physics, Universitetet i Stavanger, Stavanger, Norway
| | - Dang Phuc Dam
- College of Natural Sciences, Can Tho University, Can Tho City 900000, Vietnam
| | - Nguyen Thanh Tien
- College of Natural Sciences, Can Tho University, Can Tho City 900000, Vietnam
| | - Duy Khanh Nguyen
- Laboratory for Computational Physics, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam.
- Faculty of Mechanical - Electrical and Computer Engineering, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam
| |
Collapse
|
2
|
Tien NT, Dang NH, Bich Thao PT, Vo KD, Hoat DM, Nguyen DK. Adsorption effects of acetone and acetonitrile on defected penta-PdSe 2 nanoribbons: a DFT study. RSC Adv 2024; 14:16445-16458. [PMID: 38774611 PMCID: PMC11106654 DOI: 10.1039/d4ra02368d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 05/15/2024] [Indexed: 05/24/2024] Open
Abstract
Using DFT calculations, the structural and electronic properties of the ZZ7 p-PdSe2 nanoribbons (ZZ7) with the four kinds of vacancy defects, including ZZ7-VPd, ZZ7-VSe, ZZ7-VPd+Se, and ZZ7-V2Se are studied, in which their stability, diverse geometries, and altered electronic properties are determined through the formation energies, optimal structural parameters, electronic band structures, and DOSs. Specifically, the formation energies of all studied systems show significant negative values around -3.9 eV, evidencing their good thermal stability. The geometries of four defective structures exhibit different diversification, whereas only the ZZ7-V2Se structure possesses the highly enhanced feature, identified as the most effective substrate for the acetone and acetonitrile adsorption. On the electronic behaviors, the ZZ7 band structure displays the nonmagnetic metallic characteristics that become the ferromagnetic half-metallic band structures for the ZZ7-VPd and ZZ7-VSe and the ferromagnetic semi-metallic band structures for the ZZ7-VPd+Se and ZZ7-V2Se. For adsorption of the acetone and acetonitrile on the ZZ7-V2Se structure, the energetic stability, adsorption sites, adsorption distances, charge transfers, and electronic characteristics of the adsorbed systems are determined by the adsorption energies, optimal adsorption sites, adsorption distances, Mulliken populations, and DOSs. The adsorption energies of the acetone- and acetonitrile-adsorbed ZZ7-V2Se systems display significant values at -1.2 eV and -0.86 eV at the preferable sites of 8 and 11, respectively, indicating their great adsorption ability. The adsorption mechanism of the acetone- and acetonitrile-adsorbed systems belongs to the physisorption owing to absence of chemical bonds, in which the bond lengths of the ZZ7-V2Se substrate show a very small deviation. Under the acetone and acetonitrile adsorptions, the ferromagnetic semi-metallic DOSs of the ZZ7-V2Se become the ferromagnetic half-metallic DOSs for the ZZ7-V2Se-acetone-8 and the ferromagnetic semiconducting DOSs for the ZZ7-V2Se-acetonitrile-11. Our systematic results can provide a complete understanding of the acetone- and acetonitrile adsorptions on the potential ZZ7-V2Se structure, which is very useful for nanosensor application.
Collapse
Affiliation(s)
- Nguyen Thanh Tien
- College of Natural Sciences, Can Tho University 3-2 Road Can Tho City 900000 Vietnam
| | - Nguyen Hai Dang
- College of Natural Sciences, Can Tho University 3-2 Road Can Tho City 900000 Vietnam
| | - Pham Thi Bich Thao
- College of Natural Sciences, Can Tho University 3-2 Road Can Tho City 900000 Vietnam
| | - K Dien Vo
- Division of Applied Physics, Dong Nai Technology University Bien Hoa City Vietnam
- Faculty of Engineering, Dong Nai Technology University Bien Hoa City Vietnam
| | - D M Hoat
- Institute of Theoretical and Applied Research, Duy Tan University Ha Noi 100000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Duy Khanh Nguyen
- Laboratory for Computational Physics, Institute for Computational Science and Artificial Intelligence, Van Lang University Ho Chi Minh City Vietnam
- Faculty of Mechanical - Electrical and Computer Engineering, School of Technology, Van Lang University Ho Chi Minh City Vietnam
| |
Collapse
|
3
|
Bartashevich EV, Levina EO, Yushina ID, Sozykin SA, Tsirelson VG. Electron delocalization in defect-containing graphene and its influence on tetrel bond formation. Phys Chem Chem Phys 2023; 25:24342-24354. [PMID: 37672065 DOI: 10.1039/d3cp03127f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Using the advanced analyses of electron density and fermionic potential, we show how electron delocalization influences the ability of defect-containing graphene to form tetrel bonds. The Cg atoms of a vacancy defect can produce one nonpolar interaction, alongside a peculiar polar Cg⋯Cg bond. The latter stems from the presence of a localized electron pair on a vacancy defect Cg atom and the local depletion of electron localization on another Cg atom. This interaction is an example of intralayer tetrel bond. In the presence of an absorbed molecule of bisphenol A diglycidyl ether (DGEBA), graphene is able to form incipient tetrel Cg⋯O bonds with an ether group oxygen. In contrast to an epoxy group oxygen, the disposition of the ether oxygen often causes the orientation of electron-rich π-domains of graphene carbon on the weakly expressed electrophilic region of the oxygen. In the case of graphene with a point Si defect, the Si atom can form quite strong Si⋯C interactions with the DGEBA aryl carbons. In contrast to other noncovalent bonds, this interaction significantly alters the electron (de)localization on the Si atom and in the aryl ring. The reliability of the obtained results is enhanced by the use of multiple 2D periodic models with defects located at different positions along the DGEBA skeleton.
Collapse
Affiliation(s)
| | - Elena O Levina
- South Ural State University, 454080 Chelyabinsk, Russia.
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119071 Moscow, Russia
| | | | | | - Vladimir G Tsirelson
- South Ural State University, 454080 Chelyabinsk, Russia.
- D.I. Mendeleev University of Chemical Technology, 125047 Moscow, Russia
| |
Collapse
|
4
|
Serinçay N, Fellah MF. A Density Functional Theory Study on Graphene Triple Doped with Ga, Ge, P, Si, and Al. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422140205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
5
|
Alimohammadi E, Nikzad A, Khedri M, Shafiee S, Miri Jahromi A, Maleki R, Rezaei N. Molecular Tuning of the Nano–Bio Interface: Alpha-Synuclein’s Surface Targeting with Doped Carbon Nanostructures. ACS APPLIED BIO MATERIALS 2021; 4:6073-6083. [DOI: 10.1021/acsabm.1c00421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ehsan Alimohammadi
- Department of Neurosurgery, Kermanshah University of Medical Sciences, Imam Reza Hospital, 67158-47141 Kermanshah, Iran
| | - Arash Nikzad
- Department of Mechanical Engineering, University of British Columbia, 2054-6250 Applied
Science Lane, Vancouver, British Columbia V6T1Z4, Canada
| | - Mohammad Khedri
- Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Sepehr Shafiee
- School of Medicine, Shahid Beheshti University of Medical Sciences, 19839-63113 Tehran, Iran
| | - Ahmad Miri Jahromi
- Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Reza Maleki
- Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children’s Medical Center, Tehran University of Medical Sciences, 14167-53955 Tehran, Iran
- Network of Immunity in Infection, Malignancy, and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran 1419733141, Iran
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, 14167-53955 Tehran, Iran
| |
Collapse
|
6
|
Graphene-based materials: A new tool to fight against breast cancer. Int J Pharm 2021; 603:120644. [PMID: 33964335 DOI: 10.1016/j.ijpharm.2021.120644] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/11/2021] [Accepted: 04/21/2021] [Indexed: 12/30/2022]
Abstract
Breast cancer is one of the most common malignant tumors among women population on a global scale, with a huge number of new cases and deaths each year. In recent years, there has been an increasing number of literatures on the discovery and development of novel anti-breast cancer drugs and materials, aiming to increase the survival rate of breast cancer patients. One of the newest tools used for the therapy of breast cancer is graphene-based materials, which have ultra-high surface area as well as unique physical, chemical and mechanical properties. It is reported that graphene-based materials could induce apoptosis in cancer cells while showing low toxicity due to their carbon structure. Therefore, they can be used as nano-drugs or biological carriers to introduce small molecules such as nucleic acids, drugs, or photosensitizers into the human body to achieve treatment goals. This article introduces the synthetic methods for graphene-based materials, as well as the current status and the future prospects of graphene-based materials' application in the treatment of breast cancer.
Collapse
|
7
|
Dien VK, Pham HD, Tran NTT, Han NT, Huynh TMD, Nguyen TDH, Fa-Lin M. Orbital-hybridization-created optical excitations in Li 2GeO 3. Sci Rep 2021; 11:4939. [PMID: 33654159 PMCID: PMC7925650 DOI: 10.1038/s41598-021-84506-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 02/12/2021] [Indexed: 11/23/2022] Open
Abstract
The three-dimensional ternary Li2GeO3 compound presents various unusual essential properties. The main features are thoroughly explored from the first-principles calculations. The concise pictures, the critical orbital hybridizations in Li-O and Ge-O bonds, are clearly examined through the optimal geometric structure, the atom-dominated electronic energy spectrum, the spatial charge densities, the atom and orbital-decomposed van Hove singularities, and the strong optical responses. The unusual optical transitions cover the red-shift optical gap, various frequency-dependent absorption structures and the most prominent plasmon mode in terms of the dielectric functions, energy loss functions, reflectance spectra, and absorption coefficients. Optical excitations, depending on the directions of electric polarization, are strongly affected by excitonic effects. The close combinations of electronic and optical properties can identify a significant orbital hybridization for each available excitation channel. The developed theoretical framework will be very useful in fully understanding the diverse phenomena of other emergent materials.
Collapse
Affiliation(s)
- Vo Khuong Dien
- Department of Physics, National Cheng Kung University, Tainan, 701, Taiwan.
| | - Hai Duong Pham
- Center of General Studies, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Ngoc Thanh Thuy Tran
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan, 701, Taiwan
| | - Nguyen Thi Han
- Department of Physics, National Cheng Kung University, Tainan, 701, Taiwan
- Department of Chemistry, Thai Nguyen University of Education, 20 Luong Ngoc Quyen, Quang Trung, Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Thi My Duyen Huynh
- Department of Physics, National Cheng Kung University, Tainan, 701, Taiwan
| | | | - Ming Fa-Lin
- Department of Physics, National Cheng Kung University, Tainan, 701, Taiwan.
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan, 701, Taiwan.
| |
Collapse
|