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Algharagholy LA, García-Suárez VM, Bardan KH. Robust nanotube-based nanosensor designed for the detection of explosive molecules. NANOSCALE ADVANCES 2024; 6:3553-3565. [PMID: 38989522 PMCID: PMC11232540 DOI: 10.1039/d4na00166d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 05/29/2024] [Indexed: 07/12/2024]
Abstract
The adequate determination and detection of explosive molecules is key to introducing improvements in areas related to safety, whose progress depends on an adequate and rapid determination of dangerous substances. To detect explosives down to the molecular level and accurately discriminate between different but somehow similar substances, it is necessary to design sensors that can differentiate them uniquely and efficiently. In this study, we present a new generation nanoscale sensor based on carbon nanotubes with an adapted nanopore shape that is capable of effectively discriminating between five types of explosive compounds (TATP, RDX, PENT, HMX and DNT). We show that the interaction of each compound with the walls of the nanotubes induces changes in transmission and current that allows clear differentiation of each type of molecule. Interestingly, the transport properties do not depend on the orientation of the molecules within the nanopore in most cases, making it a robust device with high reproducibility and stability. The results also show that these systems can lead to relatively high thermoelectric performances and, furthermore, the Seebeck coefficient can be used to discriminate between them.
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Affiliation(s)
- Laith A Algharagholy
- Department of Physics, College of Science, University of Sumer Al Rifaee Zip: 64005 Thi-Qar Iraq
| | | | - Kareem Hasan Bardan
- Department of Physics, College of Science, University of Sumer Al Rifaee Zip: 64005 Thi-Qar Iraq
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2
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Farcaş AA, Bende A. Theoretical insights into dopamine photochemistry adsorbed on graphene-type nanostructures. Phys Chem Chem Phys 2024; 26:14937-14947. [PMID: 38738904 DOI: 10.1039/d4cp00432a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
The equilibrium geometry structures and light absorption properties of the dopamine (DA) and dopamine-o-quinone (DAQ) adsorbed on the graphene surface have been investigated using the ground state and linear-response time-dependent density functional theories. Two types of graphene systems were considered, a rectangular form of hexagonal lattice with optimized C-C bond length as the model system for graphene nanoparticles (GrNP) and a similar system but with fixed C-C bond length (1.42 Å) as the model system for graphene 2D sheet (GrS). The analysis of the vertical excitations showed that three types of electronic transitions are possible, namely, localized on graphene, localized on the DA or DAQ, and charge transfer (CT). In the case of the graphene-DA complex, the charge transfer excitations were characterized by the molecule-to-surface (MSCT) character, whereas the graphene-DAQ was characterized by the reverse, i.e. surface-to-molecule (SMCT). The difference between the two cases is given by the presence of an energetically low-lying unoccupied orbital (LUMO+1) that allows charge transfer from the surface to the molecule in the case of DAQ. However, it was also shown that the fingerprints of excited electronic states associated with the adsorbed molecules cannot be seen in the spectrum, as they are mostly suppressed by the characteristic spectral shape of graphene.
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Affiliation(s)
- Alex-Adrian Farcaş
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, Ro-400293 Cluj-Napoca, Romania.
| | - Attila Bende
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, Ro-400293 Cluj-Napoca, Romania.
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Shakouri S, Khalili B, Nikpasand M, Kefayati H. Adsorption of Tunable aryl alkyl ionic liquids (TILs) on the graphene and Defective graphene nanosheets: A DFT Study. J Mol Graph Model 2023; 125:108612. [PMID: 37657330 DOI: 10.1016/j.jmgm.2023.108612] [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: 06/19/2023] [Revised: 08/22/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023]
Abstract
Optical and electronic characteristics of the graphene nanosheets (GNS) could be altered by some structural defects such as double-vacancy and Stone-Wales ones. The physisorption manner of [MPI][BF4], [MPT1][BF4], [MPT2][BF4], and [MPTT][BF4] ionic liquids on intact and defective GNS surfaces were investigated using M06-2X/cc-pVDZ computational method. Capability for adsorption on the DV and SW graphene surfaces by TILs is increased by about 1.0-4.3 and 0.4-2.0 kcal/mol respectively. The electrostatic potential of the GNS-DV surface is more negative than the GNS-SW one which enables it to interact with cation parts of the adsorbed TILs so extensively. The highest adsorption energy belongs to the [MPI][BF4]/GNS-DV system. Adsorption of the TILs on the GNS surfaces leads to a decrease in the energy of the LUMO molecular orbital as well as their energy gap of them. Results revealed that the electrical conductivity, as well as absorption spectra of the GNS surfaces, are affected by TILs adsorption and defect nature.
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Affiliation(s)
- Soheila Shakouri
- Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Behzad Khalili
- Department of Chemistry, Faculty of Sciences, University of Guilan, Rasht, Iran.
| | - Mohammad Nikpasand
- Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Hasan Kefayati
- Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
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4
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Tomović AŽ, Miljkovic H, Dražić MS, Jovanović VP, Zikic R. Tunnel junction sensing of TATP explosive at the single-molecule level. Phys Chem Chem Phys 2023; 25:26648-26658. [PMID: 37772423 DOI: 10.1039/d3cp02767h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Triacetone triperoxide (TATP) is a highly potent homemade explosive commonly used in terrorist attacks. Its detection poses a significant challenge due to its volatility, and the lack of portability of current sensing techniques. To address this issue, we propose a novel approach based on single-molecule TATP detection in the air using a device where tunneling current in N-terminated carbon-nanotubes nanogaps is measured. By employing the density functional theory combined with the non-equilibrium Green's function method, we show that current of tens of nanoamperes passes through TATP trapped in the nanogap, with a discrimination ratio of several orders of magnitude even against prevalent indoor volatile organic compounds (VOCs). This high tunneling current through TATP's highest occupied molecular orbital (HOMO) is facilitated by the strong electric field generated by N-C polar bonds at the electrode ends and by the hybridization between TATP and the electrodes, driven by oxygen atoms within the probed molecule. The application of the same principle is discussed for graphene nanogaps and break-junctions.
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Affiliation(s)
- Aleksandar Ž Tomović
- University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11030 Belgrade, Serbia.
| | - Helena Miljkovic
- University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11030 Belgrade, Serbia.
| | - Miloš S Dražić
- University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11030 Belgrade, Serbia.
| | - Vladimir P Jovanović
- University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11030 Belgrade, Serbia.
| | - Radomir Zikic
- University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11030 Belgrade, Serbia.
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Mohammed MS, Kovalev IS, Slovesnova NV, Sadieva LK, Platonov VA, Novikov AS, Santra S, Morozova JE, Zyryanov GV, Charushin VN, Ranu BC. Polyaromatic Hydrocarbon (PAH)-Based Aza-POPOPs: Synthesis, Photophysical Studies, and Nitroanalyte Sensing Abilities. Int J Mol Sci 2023; 24:10084. [PMID: 37373234 DOI: 10.3390/ijms241210084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/31/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
1,4-Bis(5-phenyl-2-oxazolyl)benzene (POPOP) is a common scintillation fluorescent laser dye. In this manuscript, the synthesis of 2-Ar-5-(4-(4-Ar'-1H-1,2,3-triazol-1-yl)phenyl)-1,3,4-oxadiazoles (Ar, Ar' = Ph, naphtalenyl-2, pyrenyl-1, triphenilenyl-2), as PAH-based aza-analogues of POPOP, by means of Cu-catalyzed click reaction between 2-(4-azidophenyl)-5-Ar-1,3,4-oxadiazole and terminal ethynyl-substituted PAHs is reported. An investigation of the photophysical properties of the obtained products was carried out, and their sensory response to nitroanalytes was evaluated. In the case of pyrenyl-1-substituted aza-POPOP, dramatic fluorescence quenching by nitroanalytes was observed.
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Affiliation(s)
- Mohammed S Mohammed
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
| | - Igor S Kovalev
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
| | - Natalya V Slovesnova
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
- Department of Pharmacy and Chemistry, Ural Medical University, 3, Repina St., 620028 Yekaterinburg, Russia
| | - Leila K Sadieva
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20, S. Kovalevskoy/Akademicheskaya St., 620137 Yekaterinburg, Russia
| | - Vadim A Platonov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
| | - Alexander S Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, 199034 Saint Petersburg, Russia
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, 117198 Moscow, Russia
| | - Sougata Santra
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
| | - Julia E Morozova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, 420088 Kazan, Russia
| | - Grigory V Zyryanov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20, S. Kovalevskoy/Akademicheskaya St., 620137 Yekaterinburg, Russia
| | - Valery N Charushin
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division), 22/20, S. Kovalevskoy/Akademicheskaya St., 620137 Yekaterinburg, Russia
| | - Brindaban C Ranu
- Department of Organic and Biomolecular Chemistry, Ural Federal University, 19, Mira St., 620002 Yekaterinburg, Russia
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Tümay SO, Şenocak A, Çoşut B, Alidağı HA, Yeşilot S. A water-soluble small molecular fluorescent sensor based on phosphazene platform for selective detection of nitroaromatic compounds. Photochem Photobiol Sci 2023:10.1007/s43630-023-00388-3. [PMID: 36807055 DOI: 10.1007/s43630-023-00388-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 02/02/2023] [Indexed: 02/21/2023]
Abstract
Nitro-aromatic compounds have a deleterious effect on the environment and they are extremely explosive. Therefore, societal concern about exposure to nitro-aromatic compounds encourages researchers to develop selective and sensitive detection platforms for nitro-aromatic compounds in recent years. In this paper, a new 100% water-soluble cyclotriphosphazene-based bridged naphthalene material (4) was prepared as a small molecule fluorescent sensor for ultra-selective detection of nitro-aromatic compounds. The chemical structure of 4 was extensively characterized by mass spectrometry and nuclear magnetic resonance spectroscopies (31P, 13C, 1H). The photo-physical properties of the newly developed sensing system were investigated by steady-state fluorescence and UV-Vis absorption spectroscopies. The fluorescence sensor behaviors were extensively evaluated after treatment with the most commonly used metal cations, anions, competitive aromatic compounds, saccharides, and organic acids. The developed fluorescent sensing system (4) demonstrated ultra-selective fluorescence "turn-off" signal change toward nitro-aromatic compounds while other tested competitive species caused negligible changes. To evaluate selectivity, time-resolved, steady-state 3D-fluorescence and UV-Vis absorption spectroscopies were used in fully aqueous media. Moreover, theoretical calculations (density functional theory and time-dependent density functional theory) were applied and discussed to identify fluorescence sensing mechanisms toward nitroaromatic compounds for the presented sensing system.
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Affiliation(s)
- Süreyya Oğuz Tümay
- Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey
| | - Ahmet Şenocak
- Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey
| | - Bünyemin Çoşut
- Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey
| | | | - Serkan Yeşilot
- Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey.
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Algharagholy LA, Al-Galiby QH, Al-Backri AA, Sadeghi H, Wabdan AA. Discriminating sensing of explosive molecules using graphene-boron nitride-graphene heteronanosheets. RSC Adv 2022; 12:35151-35157. [PMID: 36540262 PMCID: PMC9727695 DOI: 10.1039/d2ra06125b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/16/2022] [Indexed: 12/12/2022] Open
Abstract
Since the synthesis of graphene-boron nitride heterostructures, their interesting electronic properties have attracted huge attention for real-world nanodevice applications. In this work, we combined density functional theory (DFT) with a Green's function approach to examine the potential of graphene-boron nitride-graphene heteronanosheets (h-NSHs) for discriminating single molecule sensing. Our result demonstrates that the graphene-boron nitride-graphene (h-NSHs) can be used for discriminate sensing of the 2,4-dinitrotoluene (DNT), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), pentaerythritol tetranitrate (PENT), and 2,4,6-trinitrotoluene (TNT) molecules. We demonstrate that as the length of the BN region increases, the sensitivity of the heteronanosheets to the presence of these explosive substances increases.
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Affiliation(s)
- Laith A Algharagholy
- Department of Physics, College of Science, University of Sumer, Al Rifaee Thi Qar Iraq
| | - Qusiy H Al-Galiby
- Physics Department, College of Education, University of Al-Qadisiyah Diwaniyah Iraq
| | - Amaal A Al-Backri
- Department of Astronomy and Space, College of Science, University of Baghdad Baghdad Iraq
| | - Hatef Sadeghi
- Device Modelling Group, School of Engineering, University of Warwick Coventry CV4 7AL UK
| | - Ahmed A Wabdan
- Department of Science, College of Basic Education, University of Sumer, Al Rifaee Thi Qar Iraq
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Yadav A, Dindorkar SS. Adsorption behaviour of hexagonal boron nitride nanosheets towards cationic, anionic and neutral dyes: Insights from first principle studies. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128509] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9
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Shakourian-Fard M, Maryamdokht Taimoory S, Ghenaatian HR, Kamath G, Trant JF. Effect of mono-vacant defects on the adsorption properties of deep eutectic solvents onto hexagonal boron-nitride nanoflakes. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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John C, Swathi RS. An anisotropic dressed pairwise potential model for the adsorption of noble gases on boron nitride sheets. Phys Chem Chem Phys 2022; 24:2554-2566. [PMID: 35024709 DOI: 10.1039/d1cp04815e] [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]
Abstract
Development of empirical potentials with accurate parameterization is indispensable while modeling large-scale systems. Herein, we report accurate parameterization of an anisotropic dressed pairwise potential model (PPM) for probing the adsorption of noble gases, He, Ne, Ar and Kr on boron nitride sheets. For the noble gas binding on B48N48H24, we carried out a least-squares fit analysis of the dispersion and dispersionless contributions of the interaction potential separately. The transferability of the parameters for a range of molecular model systems of boron nitride is further established. The dressed PPM is then used in conjunction with a global optimization technique, namely particle swarm optimization (PSO) to assess the possibility of performing large-scale simulations with the PPM-PSO methodology. The results obtained for the adsorption of 2-5 noble gases on BN sheets establish the proof-of-concept, encouraging the pursuit of large-scale simulations using the PPM-PSO approach.
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Affiliation(s)
- Chris John
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Thiruvananthapuram, India.
| | - Rotti Srinivasamurthy Swathi
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Thiruvananthapuram, India.
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Bhai S, Ganguly B. Exploiting the optical sensing of fluorophore-tagged DNA nucleobases on hexagonal BN and Al-doped BN sheets: a computational study. Phys Chem Chem Phys 2021; 24:829-841. [PMID: 34928284 DOI: 10.1039/d1cp04009j] [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]
Abstract
Hexagonal boron nitride (h-BN) sheets possess high fluorescence quenching ability and high affinity towards DNA/RNA, and they can be used as a sensing platform for rapid detection. We report the absorption and emission properties of DNA nucleobases such as adenine (A), cytosine (C), guanine (G), and thymine (T) tagged with benzoxazole on h-BN and aluminium-doped h-BN (Al_hBN) sheets. The binding affinity of studied nucleobases on h-BN sheets at the M062X/6-31G* level of theory showed the following adsorption trend: G ≥ T ≥ A > C, which is in good agreement with the previous results. The calculated stability trend of nucleobases on the Al_hBN sheet follows as C > G > A > T at the same level of theory. The physically adsorbed behavior of nucleobases to h-BN sheets was confirmed by the non-covalent interactions (NCIs) and the total density of states (TDOS) plots. The NCI results indicated that van der Waals interactions contribute significantly to the adsorption of nucleobases on h-BN sheets. Atoms in molecules (AIM) calculations revealed the electrostatic interactions between nucleobases and the Al_hBN sheet. The quenching phenomenon of nucleobase-tagged fluorophores on h-BN and Al_hBN sheets was investigated by TD-DFT calculations using the same level of theory. The thymine-tagged fluorophore upon adsorption to the pristine h-BN sheet was found to be blue-shifted (∼43 nm); however, the guanine-tagged fluorophore with Al_hBN showed a remarkable difference from other nucleobase-tagged fluorophores in the absorption and emission spectrum. Guanine-tagged fluorophores showed a smaller blue shift (∼7 nm) in the absorption spectrum; however, it showed a larger red shift (∼55 nm) than the other nucleobase-tagged fluorophores on Al_hBN sheets and can be useful in recognizing a sequence-specific phenomenon as a fluorescent biosensor of DNA and RNA to ascertain the presence of such nucleobases.
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Affiliation(s)
- Surjit Bhai
- Computational and Simulation Unit (Analytical and Environment Science Division and Centralized Instrument Facility) CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, Gujarat, 364002, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.,CSIR-CSMCRI, Bhavnagar-364002, Gujarat, India
| | - Bishwajit Ganguly
- Computational and Simulation Unit (Analytical and Environment Science Division and Centralized Instrument Facility) CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, Gujarat, 364002, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.,CSIR-CSMCRI, Bhavnagar-364002, Gujarat, India
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Roohi H, Ardehjani NA. Adsorption performance of M-doped (M = Ti and Cr) gallium nitride nanosheets towards SO 2 and NO 2: a DFT-D calculation. RSC Adv 2020; 10:27805-27814. [PMID: 35516914 PMCID: PMC9055613 DOI: 10.1039/d0ra03251d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 07/06/2020] [Indexed: 11/26/2022] Open
Abstract
The structure, adsorption characteristics, electronic properties, and charge transfer of SO2 and NO2 molecules on metal-doped gallium nitride nanosheets (M-GaNNSs; M = Ti and Cr) were scrutinized at the Grimme-corrected PBE/double numerical plus polarization (DNP) level of theory. Two types, MGa-GaNNSs and MN-GaNNSs, of doped nanostructures were found. The MGa sites are more stable than the MN sites. The results showed that adsorption of SO2 and NO2 molecules on TiGa,N-GaNNSs is energetically more favorable than the corresponding CrGa,N-GaNNSs. The stability order of complexes is energetically predicted to be as NO2-TiGa-GaNNS > NO2-TiN-GaNNS > SO2-TiGa-GaNNS > NO2-CrN-GaNNS > SO2-TiN-GaNNS > NO2-CrGa-GaNNS > SO2-CrN-GaNNS > SO2-CrGa-GaNNS. The electron population analysis shows that charge is transferred from MGa,N-GaNNSs to the adsorbed gases. The TiGa-GaNNS is more sensitive than the other doped nanostructures to NO2 and SO2 gases. It is estimated that the sensitivity of TiGa-GaNNS to NO2 gas is more than to SO2 gas.
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Affiliation(s)
- Hossein Roohi
- Computational Quantum Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Guilan Rasht Iran +98 131 3233262
| | - Nastaran Askari Ardehjani
- Computational Quantum Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Guilan Rasht Iran +98 131 3233262
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Talaei R, Khalili B, Mokhtary M. Modulation of opto-electronic properties of the functionalized hexagonal boron nitride nanosheets with tunable aryl alkyl ionic liquids (TAAILs): Defect based analysis. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112696] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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14
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Bhai S, Ganguly B. Probing the Interaction of Nucleobases and Fluorophore‐Tagged Nucleobases with Graphene Surface: Adsorption and Fluorescence Studies. ChemistrySelect 2020. [DOI: 10.1002/slct.201904442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Surjit Bhai
- Academy of Scientific and Innovative ResearchComputation and Simulation Unit (Analytical Discipline and Centralized Instrument Facility) CSIR-CSMCRI, Bhavnagar- 364002 Gujarat India
| | - Bishwajit Ganguly
- Computation and Simulation Unit (Analytical Discipline and Centralized Instrument Facility)CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar Gujarat India- 364 002
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15
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Exploring the nature of interaction and stability between DNA/RNA base pairs and defective & defect-dopant graphene sheets. A possible insights on DNA/RNA sequencing. Int J Biol Macromol 2020; 146:387-404. [DOI: 10.1016/j.ijbiomac.2020.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/07/2019] [Accepted: 01/01/2020] [Indexed: 01/29/2023]
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16
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17
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Shin MK, Kim MH, Kim GY, Kang B, Chae JS, Haam S. Highly Energetic Materials-Hosted 3D Inverse Opal-like Porous Carbon: Stabilization/Desensitization of Explosives. ACS APPLIED MATERIALS & INTERFACES 2018; 10:43857-43864. [PMID: 30475574 DOI: 10.1021/acsami.8b11591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The precise control of sensitivity to external stimuli, for example, impact, friction, and thermal energy, has been emphasized for highly energetic materials, including RDX and HMX. Such sensitivities could be controlled by adjusting the surface area or (in)organic additives; however, increased stability leads to a decrease in the explosives' performance. Here, high-energy-density molecules hosted in inverse opal-like porous carbon (IOC) nanocomposites demonstrate the mechanical stabilization and desensitization of RDX and HMX inside the carbon nanostructure using host-guest chemistry techniques. For this strategy, the uniform, vacant voids of the IOC were used to provide internal crystallization for the impact/frictional stabilization of explosives, and also to enhance the thermal reactivity by the high heat conductivity of IOC initiating detonation by thermally induced hotspot. The weight percentage of high explosives hosted by recrystallization at high temperatures and in vacuum reached ∼70%. After high explosives were embedded inside the IOC, the impact, friction and electrostatic stability was greatly increased (2-2.15-fold, 1.86-1.92-fold, and 1.25-2-fold, respectively) compared with free RDX and HMX. Also, addition of PVP as a binder controlled the effectiveness and efficiency of the carbon template, enabling control of the impact and friction sensitivity from 14.72 J to >79.43 J and from 295.81 to 352.80 N, respectively.
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Affiliation(s)
- Moo-Kwang Shin
- Department of Chemical and Biomolecular Engineering, College of Engineering , Yonsei University , Seoul 120-749 , Republic of Korea
| | - Myeong-Hoon Kim
- Department of Chemical and Biomolecular Engineering, College of Engineering , Yonsei University , Seoul 120-749 , Republic of Korea
| | - Ga-Yun Kim
- Department of Chemical and Biomolecular Engineering, College of Engineering , Yonsei University , Seoul 120-749 , Republic of Korea
| | - Byunghoon Kang
- Department of Chemical and Biomolecular Engineering, College of Engineering , Yonsei University , Seoul 120-749 , Republic of Korea
| | - Joo Seung Chae
- Agency for Defense Development , P.O. Box 35-42, Yuseong, Daejeon 34186 , Republic of Korea
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering, College of Engineering , Yonsei University , Seoul 120-749 , Republic of Korea
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Li H, Wang C, Xun S, He J, Jiang W, Zhang M, Zhu W, Li H. An accurate empirical method to predict the adsorption strength for π-orbital contained molecules on two dimensional materials. J Mol Graph Model 2018; 82:93-100. [DOI: 10.1016/j.jmgm.2018.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 10/17/2022]
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19
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Effect of mono-vacant defects on the opto-electronic properties of ionic liquid functionalized hexagonal boron-nitride nanosheets. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.140] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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20
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Shakourian-Fard M, Heydari H, Kamath G. Defect-Based Modulation of Optoelectronic Properties for Biofunctionalized Hexagonal Boron Nitride Nanosheets. Chemphyschem 2017. [DOI: 10.1002/cphc.201700512] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mehdi Shakourian-Fard
- Department of Chemical Engineering; Birjand University of Technology; Birjand P.O. Box 97175/569 Iran
| | - Hadiseh Heydari
- Department of Chemical Engineering; Birjand University of Technology; Birjand P.O. Box 97175/569 Iran
| | - Ganesh Kamath
- Department of Chemistry; University of Missouri-Columbia; Columbia MO 65211 USA
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21
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Shakourian-Fard M, Kamath G. The effect of defect types on the electronic and optical properties of graphene nanoflakes physisorbed by ionic liquids. Phys Chem Chem Phys 2017; 19:4383-4395. [PMID: 28119976 DOI: 10.1039/c6cp07455c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Defect engineering and non-covalent interaction strategies allow for dramatically tuning the optoelectronic properties of graphene. Using ab initio density functional theory (M06-2X/cc-pVDZ), we find that the nature of defects on the graphene nanoflakes (GNFs) and the size of defective GNF (DGNF) surfaces affect the binding energy (ΔEb) of ionic liquids (ILs) and the UV-Vis absorption spectra of DGNFIL complexes. Further, our results indicate that increasing the size of DGNFs affects the geometrical structure of the surfaces and increases the binding energy of ILs by about 10%. Analysis based on AIM and EDA shows that the interactions between ILs and DGNFs are non-covalent in nature (dispersion energy being dominant) and associated with charge transfer between the IL and nanoflakes. A comparison between the ΔEb values of ILs on DGNFs, GNFs, and h-BN nanoflakes (h-BNNF) shows that the presence of defects on the GNF surfaces increases the binding energy values as follows: DGNFIL > pristine GNFIL > h-BNNFIL. Our calculations indicate that increasing the size of DGNF surfaces leads to a decrease in the HOMO-LUMO energy gap (Eg) of the DGNF surfaces. Orbital energy and density of state calculations show that the Eg of DV(SW)-GNFs decreases upon IL adsorption and their Fermi energy level is shifted depending on the type of IL, thus enabling better conductivity. Reactivity descriptors generally indicate that the chemical potential (μ) and chemical hardness (η) of nanoflakes decrease upon IL adsorption, whereas the electrophilicity index (ω) increases. The UV-Vis absorption spectrum of DV-GNF and SW-GNF shows four bands in the visible spectrum which correspond to π → π* transitions with the absorption bands of SW-GNF appearing at higher wavelengths than those of DV-GNF. The most intense absorption bands in DV-GNF (λ = 348 nm) and SW-GNF (λ = 375 nm) are associated with electronic transitions HOMO-1 → LUMO+2 and HOMO → LUMO+1, respectively. In addition, these absorption bands undergo a red-shift by both increasing the size of the DV(SW)-GNF surfaces and IL adsorption. We also observe that the energy gaps and absorption spectra can be altered by varying the defect types and the type of IL adsorbate, where the defect types affect the spectral shapes of the bands and adsorbates at the first absorption peak, thus having potential application for light-emitting devices.
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Affiliation(s)
- Mehdi Shakourian-Fard
- Birjand University of Technology, Department of Chemical Engineering, Birjand, P.O. Box 97175/569, Iran.
| | - Ganesh Kamath
- Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA
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22
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Mudedla SK, Balamurugan K, Kamaraj M, Subramanian V. Interaction of nucleobases with silicon doped and defective silicon doped graphene and optical properties. Phys Chem Chem Phys 2016; 18:295-309. [DOI: 10.1039/c5cp06059a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The interaction of nucleobases (NBs) with the surface of silicon doped graphene (SiGr) and defective silicon doped graphene (dSiGr) has been studied using electronic structure methods.
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Affiliation(s)
- Sathish Kumar Mudedla
- Chemical Laboratory
- CSIR Central Leather Research Institute
- Adyar
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | | | - Manoharan Kamaraj
- Chemical Laboratory
- CSIR Central Leather Research Institute
- Adyar
- India
| | - Venkatesan Subramanian
- Chemical Laboratory
- CSIR Central Leather Research Institute
- Adyar
- India
- Academy of Scientific and Innovative Research (AcSIR)
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