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Zhang JY, Chen GL, Jie Dong, Pan Wang, Gong XD. Design and exploration of 5-nitro-3-trinitromethyl-1H-1,2,4-triazole and its derivatives as energetic materials. Mol Divers 2021; 25:2107-2121. [PMID: 32436152 DOI: 10.1007/s11030-020-10103-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/04/2020] [Indexed: 11/27/2022]
Abstract
According to the fact that 5-nitro-3-trinitromethyl-1H-1,2,4 triazole (NTNMT) is a successful, good explosive, energetic groups such as -CH3, -NH2, -NHNO2, -NO2, -ONO2, -NF2, -CN, -NC, -N3 groups were introduced into NTNMT and their oxygen balance was at about zero. The energetic properties, detonation performance, and sensitivity were studied at the B3LYP/6-31G** level of density functional theory to seek for possible high energy density compounds. The effects of substituent groups on heat of formation (HOF), density ρ, detonation velocity D, detonation pressure P, detonation energy Q, and sensitivity (evaluated using oxygen balance OB, the nitro group charges -QNO2, and bond dissociation energies BDE were studied and discussed. The order of contribution of the substituent groups to ρ, D, and P was -NF2 > -ONO2 > -NO2 > -NHNO2 > -N3 > -NH2 > -NC > -CN > -CH3; while to HOF is -N3 > -NC > -CN > -NO2 > -NF2 > -ONO2 > -NH2 > -NHNO2 > -CH3. The trigger bonds in the pyrolysis process for NTNMT derivatives may be N-NO2, N-NH2, N-NHNO2, C-NO2, or O-NO2 varying with the attachment of different substituents. Results show that NTNMT-NHNO2, -NH2, -CN, and -NC derivatives have high detonation performance and good stability. In a word, the oxygen balance at about zero strategy in this work offers new routes for the improvement in properties and stabilities of energetic materials. In the present paper, several 5-nitro-3-trinitromethyl-1H-1,2,4 triazole (NTNMT) derivatives were designed. Their energetic properties, detonation performance, and sensitivity were studied at the B3LYP/6-31G** level of density functional theory (DFT) to seek for possible high energy density compounds (HEDCs). The different substituents have some changes in the influence on heat of formation (HOF), density ρ, detonation velocity D, detonation pressure P, detonation energy Q, and sensitivity. In a word, the oxygen balance at about zero strategy in this work offers new routes for the improvement in properties and stabilities of energetic materials.
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Affiliation(s)
- Jian-Ying Zhang
- College of Material and Chemical Engineering, ChuZhou University, ChuZhou, People's Republic of China.
| | - Gang-Ling Chen
- College of Material and Chemical Engineering, ChuZhou University, ChuZhou, People's Republic of China
| | - Jie Dong
- College of Material and Chemical Engineering, ChuZhou University, ChuZhou, People's Republic of China
| | - Pan Wang
- College of Material and Chemical Engineering, ChuZhou University, ChuZhou, People's Republic of China
| | - Xue-Dong Gong
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, People's Republic of China
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Energetic azo compounds based on 2,2′, 4,4′, 6,6′- hexanitroazobenzene: Structures, detonation performance, and sensitivity. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yang C, Chen J, Wang R, Zhang M, Zhang C, Liu J. Density Prediction Models for Energetic Compounds Merely Using Molecular Topology. J Chem Inf Model 2021; 61:2582-2593. [PMID: 33844526 DOI: 10.1021/acs.jcim.0c01393] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Newly developed high-throughput methods for property predictions make the process of materials design faster and more efficient. Density is an important physical property for energetic compounds to assess detonation velocity and detonation pressure, but the time cost of recent density prediction models is still high owing to the time-consuming processes to calculate molecular descriptors. To improve the screening efficiency of potential energetic compounds, new methods for density prediction with more accuracy and less time cost are urgently needed, and a possible solution is to establish direct mappings between the molecular structure and density. We propose three machine learning (ML) models, support vector machine (SVM), random forest (RF), and Graph neural network (GNN), using molecular topology as the only known input. The widely applied quantitative structure-property relationship based on the density functional theory (DFT-QSPR) is adopted as the benchmark to evaluate the accuracies of the models. All these four models are trained and tested by using the same data set enclosing over 2000 reported nitro compounds searched out from the Cambridge Structural Database. The proportions of compounds with prediction error less than 5% are evaluated by using the independent test set, and the values for the models of SVM, RF, DFT-QSPR, and GNN are 48, 63, 85, and 88%, respectively. The results show that, for the models of SVM and RF, fingerprint bit vectors alone are not facilitated to obtain good QSPRs. Mapping between the molecular structure and density can be well established by using GNN and molecular topology, and its accuracy is slightly better than that of the time-consuming DFT-QSPR method. The GNN-based model has higher accuracy and lower computational resource cost than the widely accepted DFT-QSPR model, so it is more suitable for high-throughput screening of energetic compounds.
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Affiliation(s)
- Chunming Yang
- School of Computer Science and Technology, Southwest University of Science & Technology, Mianyang 621010, Sichuan, China
| | - Jie Chen
- School of Computer Science and Technology, Southwest University of Science & Technology, Mianyang 621010, Sichuan, China.,Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), P.O. Box 919-311, Mianyang 621999, Sichuan, China
| | - Runwen Wang
- School of Computer Science and Technology, Southwest University of Science & Technology, Mianyang 621010, Sichuan, China.,Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), P.O. Box 919-311, Mianyang 621999, Sichuan, China
| | - Miao Zhang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
| | - Chaoyang Zhang
- Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), P.O. Box 919-311, Mianyang 621999, Sichuan, China
| | - Jian Liu
- Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), P.O. Box 919-311, Mianyang 621999, Sichuan, China
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Huang X, Li C, Tan K, Wen Y, Guo F, Li M, Huang Y, Sun CQ, Gozin M, Zhang L. Applying machine learning to balance performance and stability of high energy density materials. iScience 2021; 24:102240. [PMID: 33748721 PMCID: PMC7957118 DOI: 10.1016/j.isci.2021.102240] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/17/2021] [Accepted: 02/23/2021] [Indexed: 12/18/2022] Open
Abstract
The long-standing performance-stability contradiction issue of high energy density materials (HEDMs) is of extremely complex and multi-parameter nature. Herein, machine learning was employed to handle 28 feature descriptors and 5 properties of detonation and stability of 153 HEDMs, wherein all 21,648 data used were obtained through high-throughput crystal-level quantum mechanics calculations on supercomputers. Among five models, namely, extreme gradient boosting regression tree (XGBoost), adaptive boosting, random forest, multi-layer perceptron, and kernel ridge regression, were respectively trained and evaluated by stratified sampling and 5-fold cross-validation method. Among them, XGBoost model produced the best scoring metrics in predicting the detonation velocity, detonation pressure, heat of explosion, decomposition temperature, and lattice energy of HEDMs, and XGBoost predictions agreed best with the 1,383 experimental data collected from massive literatures. Feature importance analysis was conducted to obtain data-driven insight into the causality of the performance-stability contradiction and delivered the optimal range of key features for more efficient rational design of advanced HEDMs.
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Affiliation(s)
- Xiaona Huang
- Institute of Chemical Materials, China Academy of EngineeringPhysics (CAEP), Mianyang, 621900, China
- CAEP Software Center for High Performance Numerical Simulation, Beijing, 100088, China
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong, China
| | - Chongyang Li
- CAEP Software Center for High Performance Numerical Simulation, Beijing, 100088, China
- Key Laboratory of Low-dimensional Materials and Application Technology (Ministry of Education), School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Kaiyuan Tan
- Institute of Chemical Materials, China Academy of EngineeringPhysics (CAEP), Mianyang, 621900, China
| | - Yushi Wen
- Institute of Chemical Materials, China Academy of EngineeringPhysics (CAEP), Mianyang, 621900, China
- Corresponding author
| | - Feng Guo
- School of Physical Science and Information Technology, Liaocheng University, Liaocheng, 252000, China
- Corresponding author
| | - Ming Li
- Institute of Chemical Materials, China Academy of EngineeringPhysics (CAEP), Mianyang, 621900, China
| | - Yongli Huang
- CAEP Software Center for High Performance Numerical Simulation, Beijing, 100088, China
| | - Chang Q. Sun
- EBEAM, Yangtze Normal University, Chongqing, 408100, China
- NOVITAS, Nanyang Technological University, Singapore, 639798, Singapore
| | - Michael Gozin
- School of Chemistry, Faculty of Exact Science, Tel Aviv University, Tel Aviv, 69978, Israel
- Tel Aviv University Center for Nanoscience and Nanotechnology, Tel Aviv, 69978, Israel
- Center of Advanced Combustion Science, Tel Aviv University, Tel Aviv, 69978, Israel
- Corresponding author
| | - Lei Zhang
- CAEP Software Center for High Performance Numerical Simulation, Beijing, 100088, China
- Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing, 100088, China
- Corresponding author
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Ferrari BC, Bennett CJ. A computational investigation of the equilibrium geometries, energetics, vibrational frequencies, infrared intensities and Raman activities of C2Oy (y = 3, 4) species. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1837404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Brian C. Ferrari
- Department of Physics, University of Central Florida, Orlando, FL, USA
| | - Chris J. Bennett
- Department of Physics, University of Central Florida, Orlando, FL, USA
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Kang P, Liu Z, Abou-Rachid H, Guo H. Machine-Learning Assisted Screening of Energetic Materials. J Phys Chem A 2020; 124:5341-5351. [PMID: 32511924 DOI: 10.1021/acs.jpca.0c02647] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In this work, machine learning (ML), materials informatics (MI), and thermochemical data are combined to screen potential candidates of energetic materials. To directly characterize energetic performance, the heat of explosion ΔHe is used as the target property. The critical descriptors of cohesive energy, averaged over all constituent elements and the oxygen balance, are found by forward stepwise selection from a large number of possible descriptors. With them and a theoretically labeled ΔHe training data set, a satisfactory surrogate ML model is trained. The ML model is applied to large databases ICSD and PubChem to predict ΔHe. At the gross-level filtering by the ML model, 2732 molecular candidates based on carbon, hydrogen, nitrogen, and oxygen (CHNO) with high ΔHe values are predicted. Afterward, a fine-level thermochemical screening is carried out on the 2732 materials, resulting in 262 candidates with TNT equivalent power index Pe(TNT) greater than 1.5. Raising Pe(TNT) further to larger than 1.8, 29 potential candidates are found from the 2732 materials, all are new to the current reservoir of well-known energetic materials.
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Affiliation(s)
- Peng Kang
- Center for the Physics of Materials and Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada.,Nanoacademic Technologies Inc., Suite 802, 666 Sherbrooke West, Montreal, Quebec H3A 1E7, Canada
| | - Zhongli Liu
- Center for the Physics of Materials and Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
| | - Hakima Abou-Rachid
- Defence Research and Development Canada, Valcartier, Quebec G3J 1X5, Canada
| | - Hong Guo
- Center for the Physics of Materials and Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada.,Nanoacademic Technologies Inc., Suite 802, 666 Sherbrooke West, Montreal, Quebec H3A 1E7, Canada
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Zhang J, Chen G, Dong J, Gong X. Effects of Electronic Delocalization and Hydrostatic Compression on Structure and Properties of Cage Compound 4‐Trinitroethyl‐2,6,8,10,12‐pentanitrohexaazaisowurtzitane. ChemistrySelect 2019. [DOI: 10.1002/slct.201801792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jian‐ying Zhang
- College of Material and Chemical EngineeringChuZhou University, ChuZhou 239000 Anhui China
| | - Gang‐ling Chen
- College of Material and Chemical EngineeringChuZhou University, ChuZhou 239000 Anhui China
| | - Jie Dong
- College of Material and Chemical EngineeringChuZhou University, ChuZhou 239000 Anhui China
| | - Xue‐dong Gong
- School of Chemical EngineeringNanjing University of Science & Technology 210094 Jiangsu China
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