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Javed M, Khan MU, Hussain R, Ahmed S, Ahamad T. Deciphering the electrochemical sensing capability of novel Ga 12As 12 nanocluster towards chemical warfare phosgene gas: insights from DFT. RSC Adv 2023; 13:28885-28903. [PMID: 37790104 PMCID: PMC10543987 DOI: 10.1039/d3ra05086f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023] Open
Abstract
The applications of 3D inorganic nanomaterials in environmental and agriculture monitoring have been exploited continuously; however, the utilization of semiconductor nanoclusters, especially for detecting warfare agents, has not been fully investigated yet. To fill this gap, the molecular modelling of novel inorganic semiconductor nanocluster Ga12As12 as a sensor for phosgene gas (highly toxic for living things and the environment) is accomplished employing benchmark DFT and TD-DFT investigations. Computational tools have been applied to explore different adsorption sites and the potential sensing capability of the Ga12As12 nanoclusters. The calculated adsorption energy (-21.34 ± 2.7 kcal mol-1) for ten selected complexes, namely, Pgn-Cl@4m-ring (MS1), Pgn-Cl@6m-ring (MS2), Pgn-Cl@XY66 (MS3), Pgn-O@4m-ring (MS4), Pgn-O@XY66 (MS5), Pgn-O@XY64 (MS6), Pgn-O@Y (MS7), Pgn-planar@Y (MS8), Pgn-planar@X (MS9), and Pgn-planar@4m-ring (MS10), manifest the remarkable and excessive adsorption response of the studied nanoclusters. The explored molecular electronic properties, such as interaction distance (3.05 ± 0.5 Å), energy gap (∼2.17 eV), softness (∼0.46 eV), hardness (1.10 ± 0.01 eV), electrophilicity index (10.27 ± 0.45 eV), electrical conductivity (∼1.98 × 109), and recovery time (∼3 × 10-12 s-1) values, ascertain the elevated reactivity and an imperishable sensitivity of the Ga12As12 nanocluster, particularly for its complex MS8. QTAIM analysis exhibits the presence of a strong electrostatic bond (positive ∇2ρ(r) values), electron delocalization (ELF < 0.5), and a strong chemical bond (because of high all-electron density values). In addition, NBO analysis explores the lone pair electron delocalization of phosgene to the nanocluster stabilized by intermolecular charge transfer (ICT) and different kinds of non-covalent interactions. Also, the green region existence expressed by NCI analysis (between the nanocluster and adsorbate) stipulate the energetic and dominant interactions. Furthermore, the UV-Vis, thermodynamic analysis, and density of state (DOS) demonstrate the maximum absorbance (562.11 nm) and least excitation energy (2.21 eV) by the complex MS8, the spontaneity of the interaction process, and the significant changes in HOMO and LUMO energies, respectively. Thus, the Ga12As12 nanocluster has proven to be a promising influential sensing material to monitor phosgene gas in the real world, and this study will emphasize the informative knowledge for experimental researchers to use Ga12As12 as a sensor for the warfare agent (phosgene).
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Affiliation(s)
- Muhammad Javed
- Department of Chemistry, University of Okara Okara-56300 Pakistan
| | | | - Riaz Hussain
- Department of Chemistry, University of Okara Okara-56300 Pakistan
| | - Sarfraz Ahmed
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital Boston MA 02114 USA
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University Saudi Arabia
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Allangawi A, Sajid H, Ayub K, Gilani MA, Akhter MS, Mahmood T. High drug carrying efficiency of boron-doped Triazine based covalent organic framework toward anti-cancer tegafur; a theoretical perspective. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2022.113990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Tariq M, Jan S, Sarfaraz S, Muhammad S, Ayub K. Intermolecular hydrogen bonding of alcohols with dinitrobenzene radical anion and dianion: A combined electrochemical and DFT study. J Mol Graph Model 2023; 118:108358. [PMID: 36327685 DOI: 10.1016/j.jmgm.2022.108358] [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: 09/20/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022]
Abstract
Hydrogen bonding is one of the most important inter-molecular interactions in the field of biochemistry and medicinal chemistry. Such non-covalent interactions play a vital role in self-assembly phenomena, chemical structures, material properties and enzymatic catalysis. Herein, we present hydrogen bonding phenomenon in alcohols-dinitrobenzene (DNB) radical anion/dianion systems using electrochemical and computational approaches. First, 1,3-DNB radical anion and dianion were generated through electrochemical method and then hydrogen bonding interactions with aliphatic alcohols in DMSO are studied through cyclic voltammetry (CV). CV results show that the cathodic peak potential of 1,3-Dinitrobenzene in Dimethyl sulfoxide is shifted catholically upon addition of alcohols which represent hydrogen bonding phenomenon. Theoretical investigations are performed to gain deep insight on hydrogen bonding interaction strength in DNB-alcohol systems. H-bonding interaction of all isomers of DNB (1,2-, 1,3-, 1,4-), its corresponding radical anion, and dianion with aliphatic alcohols is studied using density functional calculations. The strength of H-bonding is evaluated both qualitatively and quantitatively using interaction energies, vibrational and electronic spectroscopic analysis. Understanding of these interactions will be helpful in gaining insight into biological systems where these interactions play significant role.
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Affiliation(s)
- Muhammad Tariq
- National Center of Excellence in Physical Chemistry, University of Peshawar, Peshawar, KPK, 25120, Pakistan.
| | - Safeer Jan
- National Center of Excellence in Physical Chemistry, University of Peshawar, Peshawar, KPK, 25120, Pakistan
| | - Sehrish Sarfaraz
- Department of Chemistry, COMSATS University, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | - Shabbir Muhammad
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan.
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DFT outcome for comparative analysis of Be12O12, Mg12O12 and Ca12O12 nanocages toward sensing of N2O, NO2, NO, H2S, SO2 and SO3 gases. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113694] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ali Siddique S, Sajid H, Amjad Gilani M, Ahmed E, Arshad M, Mahmood T. Sensing of SO3, SO2, H2S, NO2 and N2O toxic gases through aza-macrocycle via DFT calculations. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113606] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Coleone AP, Barboza BH, Batagin‐Neto A. Polypyrrole derivatives for detection of toxic gases: A theoretical study. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alex Pifer Coleone
- School of Sciences, POSMAT São Paulo State University (UNESP) Bauru/SP Brazil
| | - Bruno Hori Barboza
- School of Sciences, POSMAT São Paulo State University (UNESP) Bauru/SP Brazil
| | - Augusto Batagin‐Neto
- School of Sciences, POSMAT São Paulo State University (UNESP) Bauru/SP Brazil
- Campus of Itapeva São Paulo State University (UNESP) Itapeva/SP Brazil
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Asif M, Sajid H, Kosar N, Mahmood T. Effect of fluorination on the adsorption properties of aromatic heterocycles toward methyl halides: A quantum chemical study. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113394] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Hao T, Zhu Z, Yang H, He Z, Wang J. All-Day Anti-Icing/Deicing Film Based on Combined Photo-Electro-Thermal Conversion. ACS APPLIED MATERIALS & INTERFACES 2021; 13:44948-44955. [PMID: 34499477 DOI: 10.1021/acsami.1c13252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Solar energy-facilitated icephobic films have emerged as clean and renewable materials, which can potentially solve energy loss problems during anti-icing/deicing applications. However, there is a significant challenge for all-day and continuous anti-icing/deicing applications under practical conditions with insufficient sunlight or no sunlight. In this work, a chemical oxidation polymerization method was used to prepare in situ self-wrinkling porous poly(dimethylsiloxane) (PDMS)/polypyrrole (PPy) (POP-P) films based on a facile sugar template method. The porous-structured film enhanced light absorption by elongating the optical path for multiple reflections, maintaining an outstanding broad-band solar light absorption (295-2500 nm) and an exceptional photo-thermal effect. The light-to-heat performance showed a temperature enhancement from room temperature to 89.1 °C within 400 s under 1 sun illumination (qi = 1.0 kW m-2). In addition, this membrane also exhibited an electro-thermal effect at different voltages due to the Joule effect, and the saturation temperature could reach 75.4 °C at a voltage of 32 V. As an anti-icing/deicing material, this POP-P surface remained ice-free (-25 °C) throughout alternating of day and night, under conditions of a solar intensity of 0.8 kW m-2 and a voltage of 25 V.
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Affiliation(s)
- Tongtong Hao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhicheng Zhu
- Zhong Neng Power-Tech Development Co., Ltd., No.6-9, Fuchengmen North Street, Xicheng District, Beijing 100034, China
| | - Huige Yang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhiyuan He
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianjun Wang
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Asif M, Sajid H, Ayub K, Gilani MA, Akhter MS, Mahmood T. Electrochemical sensing behavior of graphdiyne nanoflake towards uric acid: a quantum chemical approach. J Mol Model 2021; 27:244. [PMID: 34373938 DOI: 10.1007/s00894-021-04860-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/28/2021] [Indexed: 11/30/2022]
Abstract
Though the gas sensing applications of graphdiyne have widely reported; however, the biosensing utility of graphdiyne needs to be explored. This study deals with the sensitivity of graphdiyne nanoflake (GDY) towards the uric acid (UA) within the density functional framework. The uric acid is allowed to interact with graphdiyne nanoflake from all the possible orientations. Based on these interacting geometries, the complexes are differentiated with naming, i.e., UA1@GDY, UA2@GDY, UA3@GDY, and UA4@GDY (Fig. 1). The essence of interface interactions of UA on GDY is derived by computing geometric, energetic, electronic, and optical properties. The adsorbing affinity of complexes is evaluated at ωB97XD/6-31 + G(d, p) level of theory. The stabilities of the complexes are quantified through the interaction energies (Eint) with reasonable accuracy. The calculated Eint of the UA1@GDY, UA2@GDY, UA3@GDY, and UA4@GDY complexes are - 31.13, - 25.87, - 20.59, and - 16.54 kcal/mol, respectively. In comparison with geometries, it is revealed that the higher stability of complexes is facilitated by π-π stacking. Other energetic analyses including symmetry adopted perturbation theory (SAPT), noncovalent interaction index (NCI), and quantum theory of atoms in molecule (QTAIM) provide the evidence of dominating dispersion energy in stabilizing the resultant complexes. The HOMO-LUMO energies, NBO charge transfer, and UV-vis analysis justify the higher electronic transition in UA1@GDY, plays a role of higher sensitivity of GDY towards the π-stacked geometries over all other possible interaction orientations. The present findings bestow the higher sensitivity of GDY towards uric acid via π-stacking interactions. Fig. 1 Optimized geometries (with interaction distances in Å) of UA@GDY complexes.
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Affiliation(s)
- Misbah Asif
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Hasnain Sajid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Mazhar Amjad Gilani
- Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | | | - Tariq Mahmood
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan. .,Department of Chemistry, College of Science, University of Bahrain, Zallaq, Bahrain.
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Asif M, Sajid H, Ullah F, Khan S, Ayub K, Amjad Gilani M, Arshad M, Salim Akhter M, Mahmood T. Quantum chemical study on sensing of NH3, NF3, NCl3 and NBr3 by using cyclic tetrapyrrole. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113221] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Chaughtai Z, Hashmi MA, Yar M, Ayub K. Electronic structure of polypyrrole composited with a low percentage of graphene nanofiller. Phys Chem Chem Phys 2021; 23:8557-8570. [PMID: 33876018 DOI: 10.1039/d0cp03258a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The low concentration of graphene (<5%) in graphene/polypyrrole composites makes it quite challenging to devise a theoretical model for these composites. Thus, herein, we present theoretical calculations to determine the geometric electronic and optical properties of graphene/polypyrrole composites. Ribbon and sheet models of various sizes were considered for graphene. Oligopyrrole of various lengths was deposited in the graphene model in different orientations including π-stacking, tilted and vertical orientations. Theoretical calculations at the M062X/def2-SVP level revealed that π-stacking is the preferred orientation. To model a lower concentration of graphene, sandwich complexes of oligopyrrole were considered with graphene nanoribbons. Interaction energies revealed that sandwich complexes possessed superior additivity. The NCI analysis established that weak van der Waals interactions existed in all composites. Moreover, the HOMO-LUMO gap decreases as the concentration of graphene increases. Thus, the computed optical band gap of the C58H24-based composite is about 1.7 eV, which is consistent with the reported experimental value (2.1-1.81 eV). The computed band gap further decreases to ∼1.6 eV when the proportion of graphene increases to C64H26. Thus, our results for the graphene nanoribbon-based polypyrrole composites are in good agreement with experimental results. The UV/visible spectra revealed that as the concentration of graphene increases, a red shift is observed for all the configurations, which is consistent with experimental results.
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Affiliation(s)
- Zulqarnain Chaughtai
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, 22060, Pakistan.
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12
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First-principles study for exploring the adsorption behavior of G-series nerve agents on graphdyine surface. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113043] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Lascane LG, Oliveira EF, Galvão DS, Batagin-Neto A. Polyfuran-based chemical sensors: Identification of promising derivatives via DFT calculations and fully atomistic reactive molecular dynamics. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110085] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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High sensitivity of graphdiyne nanoflake toward detection of phosgene, thiophosgene and phosogenoxime; a first-principles study. J Mol Graph Model 2020; 100:107658. [DOI: 10.1016/j.jmgm.2020.107658] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/15/2020] [Accepted: 05/22/2020] [Indexed: 11/24/2022]
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15
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Khan S, Sajid H, Ayub K, Mahmood T. Adsorption behaviour of chronic blistering agents on graphdiyne; excellent correlation among SAPT, reduced density gradient (RDG) and QTAIM analyses. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113860] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Remarkable enhancement in sensor ability of polyaniline upon composite formation with ZnO for industrial effluents. J Mol Graph Model 2020; 101:107724. [PMID: 32937278 DOI: 10.1016/j.jmgm.2020.107724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/13/2020] [Accepted: 08/21/2020] [Indexed: 11/21/2022]
Abstract
Polyaniline emeraldine salt and Polyaniline Zinc Oxide composite are comprehensively studied to compare their sensing ability towards ammonia, acetone, methanol and ethanol. Sensing ability is evaluated through thermodynamic, geometric and electronic parameters. A number of orientations are evaluated in search for the lowest energy structure. The comparison of thermodynamic, geometric and electronic parameters of simple and composite sensors confirmed that composite sensor shows better sensing ability than simple PANI. Composite formation between polyaniline and zinc oxide is a thermodynamically feasible process with interaction energy of -42.8 kcal/mol. Both sensor shows highest interaction energy for ethanol among four analytes. Composite sensor shows almost twice the interaction with ethanol, methanol and acetone while 1.5 times the interaction energy for ammonia. The results of run simulations and subsequent calculations showed that in composite sensors, zinc oxide not only enhances the binding power of conducting polymer with analytes but also interacts directly with analytes. Strong hydrogen bonding as well as weak dispersion forces of attraction are responsible for the stability of composite and all complexes, as revealed by non-covalent interaction (NCI) studies. Acetone shows a different behaviour in composite sensor complex than other analytes.
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Farooqi BA, Yar M, Ashraf A, Farooq U, Ayub K. Graphene-polyaniline composite as superior electrochemical sensor for detection of cyano explosives. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109981] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Ghadiri M, Ghashghaee M, Ghambarian M. Mn-Doped black phosphorene for ultrasensitive hydrogen sulfide detection: periodic DFT calculations. Phys Chem Chem Phys 2020; 22:15549-15558. [PMID: 32608400 DOI: 10.1039/d0cp02013c] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This paper addresses the comparative detection capabilities of pristine (BP) and Mn-doped (MP1) black phosphorene sensors toward the noxious H2S molecule within a periodic density functional framework. The most stable configuration of the H2S molecule on MP1 preferred the placement of an S-H bond on top of the Mn dopant, while the H-S-H plane was slightly tilted with respect to the surface. The formation of the Mn-modified phosphorene sensor was found to be highly favorable (-3.79 eV), which also enhanced the stabilization of the H2S molecule (-0.85 eV at HSE06/TZVP). The electronic band structures revealed a direct-to-indirect transition and the observation of an n-type semiconductor through Mn doping. The results indicated that the pristine phosphorene could be converted into an ultrasensitive reusable H2S nanosensor in terms of both electric conductance (3747) and work function (11 times more sensitive) through Mn doping. The new sensor was also highly selective, with a sensitivity ratio of at least 52.6 with respect to the air components. The recovery time of the Mn-doped material (2.7 s at ambient temperature) was more promising than that of BP from a practical point of view. More discussion of the material is presented with the electronic properties, frontier molecular orbitals, and density of states at rest and under operating conditions.
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Affiliation(s)
- Mahdi Ghadiri
- Informetrics Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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Ghashghaee M, Azizi Z, Ghambarian M. Substitutional doping of black phosphorene with boron, nitrogen, and arsenic for sulfur trioxide detection: a theoretical perspective. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1752692] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mohammad Ghashghaee
- Faculty of Petrochemicals, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Zahra Azizi
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Mehdi Ghambarian
- Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemical Institute, Tehran, Iran
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Sabitha R, Nagarajan V, Chandiramouli R. Computational Studies on the Interaction of Formaldehyde Vapor with δ‐Phosphorene Nanosheet: A DFT Insight. ChemistrySelect 2020. [DOI: 10.1002/slct.201904812] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ramasamy Sabitha
- School of Electrical & Electronics EngineeringSASTRA Deemed University, Tirumalaisamudram Thanjavur 613 401 India
| | - Veerappan Nagarajan
- School of Electrical & Electronics EngineeringSASTRA Deemed University, Tirumalaisamudram Thanjavur 613 401 India
| | - Ramanathan Chandiramouli
- School of Electrical & Electronics EngineeringSASTRA Deemed University, Tirumalaisamudram Thanjavur 613 401 India
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Electronic structure of polythiophene gas sensors for chlorinated analytes. J Mol Model 2020; 26:44. [PMID: 32009185 DOI: 10.1007/s00894-020-4287-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 01/10/2020] [Indexed: 10/25/2022]
Abstract
Density functional theory studies are performed to investigate the response of polythiophene as a sensor for chlorinated gaseous analytes. Interaction of polythiophene with these analytes is studied from both H-side (dipole-dipole) and Cl-side (halogen bonding) of analyte to get the most stable interaction site. Inferences from interaction energy, natural bond orbital, and Mulliken charge analyses are in line with those from geometric analysis. Interaction energies reveal that polythiophene has specificity and selectivity towards chlorine. Interestingly, the halogen bond in PT-Cl2 complexes is stronger than ion-dipole bond in the complexes of polythiophene with other analytes. The sensing of polythiophene towards these analytes is also measured by perturbing the electronic properties including ionization potential, electron affinity, λmax, and H→L gap. The spectroscopic properties (UV absorption spectra) reveal the interaction behavior of polythiophene with these chlorinated analytes. All these parameters including orbital analysis and H→L energies indicate high sensitivity of polythiophene for chlorine. Graphical abstractInteraction of chlorinated gaseous analytes with polythiophene surface.
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Yar M, Hashmi MA, Ayub K. The C2N surface as a highly selective sensor for the detection of nitrogen iodide from a mixture of NX3 (X = Cl, Br, I) explosives. RSC Adv 2020; 10:31997-32010. [PMID: 35518175 PMCID: PMC9056556 DOI: 10.1039/d0ra04930a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 08/10/2020] [Indexed: 12/14/2022] Open
Abstract
Explosives are quite toxic and destructive; therefore, it is necessary to not only detect them but also remove them. The adsorption behavior of NX3 analytes (NCl3, NBr3 and NI3) over the microporous C2N surface was evaluated by DFT calculations. The nature of interactions between NX3 and C2N was characterized by adsorption energy, NCI, QTAIM, SAPT0, NBO, EDD and FMO analysis. The interaction energies of NX3 with C2N are in the range of −10.85 to −16.31 kcal mol−1 and follow the order of NCl3@C2N > NBr3@C2N > NI3@C2N, respectively. The 3D isosurfaces and 2D-RGD graph of NCI analysis qualitatively confirmed the existence of halogen bonding interactions among the studied systems. Halogen bonding was quantified by SAPT0 component energy analysis. The SAPT0 results revealed that ΔEdisp (56.75%) is the dominant contributor towards interaction energy, whereas contributions from ΔEelst and ΔEind are 29.41% and 14.34%, respectively. The QTAIM analysis also confirmed the presence of halogen bonding between atoms of NX3 and C2N surface. EDD analysis also validated NCI, QTAIM and NBO analysis. FMO analysis revealed that the adsorption of NI3 on the C2N surface caused the highest change in the EHOMO–LUMO gap (from 5.71 to 4.15 eV), and resulted in high sensitivity and selectivity of the C2N surface towards NI3, as compared to other analytes. It is worth mentioning that in all complexes, a significant difference in the EHOMO–LUMO gap was seen when electronic transitions occurred from the analyte to the C2N surface. Explosives are quite toxic and destructive; therefore, it is necessary to not only detect them but also remove them.![]()
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Affiliation(s)
- Muhammad Yar
- Department of Chemistry
- COMSATS University
- Abbottabad Campus
- Pakistan
| | | | - Khurshid Ayub
- Department of Chemistry
- COMSATS University
- Abbottabad Campus
- Pakistan
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AZAK H, GORGUL R, TEKIN B, YILDIZ M. Calculation of conductive polymer-based SO2 and SO3 gas sensor mechanisms by using the DFT method. J Mol Model 2019; 25:367. [DOI: 10.1007/s00894-019-4219-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 09/30/2019] [Indexed: 11/28/2022]
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