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Peng B. Stability and Strength of Monolayer Polymeric C 60. NANO LETTERS 2023; 23:652-658. [PMID: 36630566 PMCID: PMC9881160 DOI: 10.1021/acs.nanolett.2c04497] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Two-dimensional fullerene networks have been synthesized in several forms, and it is unknown which monolayer form is stable under ambient conditions. Using first-principles calculations, I show that the believed stability of the quasi-tetragonal phases is challenged by mechanical, dynamic, or thermodynamic stability. For all temperatures, the quasi-hexagonal phase is thermodynamically the least stable. However, the relatively high dynamic and mechanical stabilities suggest that the quasi-hexagonal phase is intrinsically stronger than the other phases under various strains. The origin of the high stability and strength of the quasi-hexagonal phase can be attributed to the strong covalent C-C bonds that strongly hold the linked C60 clusters together, enabling the closely packed hexagonal network. These results rationalize the experimental observations that so far only the quasi-hexagonal phase has been exfoliated experimentally as monolayers.
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Eisele C, Hübschle CB, Mondal S, Dey S, van Smaalen S, Paulmann C. Boranes: The Boron Subhydride B 104.67H 3 with a Distorted β-Boron Crystal Structure. Inorg Chem 2020; 59:13295-13300. [PMID: 32881492 DOI: 10.1021/acs.inorgchem.0c01668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A single crystal of the boron subhydride B104.67(4)H3 was serendipitously obtained while attempting to synthesize β-boron. An accurate crystal structure analysis revealed a distorted β-boron framework with the noncentrosymmetric space group R3m. We have found one interstitial site occupied by boron. The site related by inversion remains empty. The distortions of the framework result in ideal environments for the interstitial boron atom, and for the three hydrogen atoms at bridging positions between icosahedral B12 groups, they result in ideal B-H distances of 1.33 Å. B104.67(4)H3 is a borane with the lowest amount of hydrogen recorded to date, and it is the first compound with a noncentrosymmetrically distorted β-boron framework.
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Affiliation(s)
- Claudio Eisele
- Laboratory of Crystallography, University of Bayreuth, 95447 Bayreuth, Germany
| | | | - Swastik Mondal
- Laboratory of Crystallography, University of Bayreuth, 95447 Bayreuth, Germany
| | - Somnath Dey
- Laboratory of Crystallography, University of Bayreuth, 95447 Bayreuth, Germany
| | - Sander van Smaalen
- Laboratory of Crystallography, University of Bayreuth, 95447 Bayreuth, Germany
| | - Carsten Paulmann
- Mineralogisch-Petrographisches Institut, Universität Hamburg, 20146 Hamburg, Germany
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3
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Sendek AD, Antoniuk ER, Cubuk ED, Ransom B, Francisco BE, Buettner-Garrett J, Cui Y, Reed EJ. Combining Superionic Conduction and Favorable Decomposition Products in the Crystalline Lithium-Boron-Sulfur System: A New Mechanism for Stabilizing Solid Li-Ion Electrolytes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37957-37966. [PMID: 32700896 DOI: 10.1021/acsami.9b19091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report a solid-state Li-ion electrolyte predicted to exhibit simultaneously fast ionic conductivity, wide electrochemical stability, low cost, and low mass density. We report exceptional density functional theory (DFT)-based room-temperature single-crystal ionic conductivity values for two phases within the crystalline lithium-boron-sulfur (Li-B-S) system: 62 (+9, -2) mS cm-1 in Li5B7S13 and 80 (-56, -41) mS cm-1 in Li9B19S33. We report significant ionic conductivity values for two additional phases: between 0.0056 and 0.16 mS/cm -1 in Li2B2S5 and between 0.0031 and 9.7 mS cm-1 in Li3BS3 depending on the room-temperature extrapolation scheme used. To our knowledge, our prediction gives Li9B19S33 and Li5B7S13 the second and third highest reported DFT-computed single-crystal ionic conductivities of any crystalline material. We compute the thermodynamic electrochemical stability window widths of these materials to be 0.50 V for Li5B7S13, 0.16 V for Li2B2S5, 0.45 V for Li3BS3, and 0.60 V for Li9B19S33. Individually, these materials exhibit similar or better ionic conductivity and electrochemical stability than the best-known sulfide-based solid-state Li-ion electrolyte materials, including Li10GeP2S12 (LGPS). However, we predict that electrolyte materials synthesized from a range of compositions in the Li-B-S system may exhibit even wider thermodynamic electrochemical stability windows of 0.63 V and possibly as high as 3 V or greater. The Li-B-S system also has a low elemental cost of approximately 0.05 USD/m2 per 10 μm thickness, which is significantly lower than that of germanium-containing LGPS, and a comparable mass density below 2 g/cm3. These fast-conducting phases were initially brought to our attention by a machine learning-based approach to screen over 12,000 solid electrolyte candidates, and the evidence provided here represents an inspiring success for this model.
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Affiliation(s)
- Austin D Sendek
- Department of Applied Physics, Stanford University, Stanford, California 94305, United States
- Department of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
- Aionics, Inc., Evanston, Wyoming 82930, United States
| | - Evan R Antoniuk
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Ekin D Cubuk
- Google Brain, Mountain View, California 94043, United States
| | - Brandi Ransom
- Department of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | | | | | - Yi Cui
- Department of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
| | - Evan J Reed
- Department of Materials Science & Engineering, Stanford University, Stanford, California 94305, United States
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Mahdavifar Z, Shojaei F. Evolutionary search for (M©B 16) Q (M = Sc-Ni; Q = 0/-1) clusters: bowl/boat vs. tubular shape. Phys Chem Chem Phys 2019; 21:22618-22628. [PMID: 31591621 DOI: 10.1039/c9cp03999f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, using universal structure predictor: evolutionary xtallography (USPEX) method, followed by density functional theory (DFT) calculations, we performed global searches for the most stable structures of (M©B16)Q (M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni; Q = 0, -1) clusters. It was found that the obtained ground-state structures of (M©B16)Q clusters exhibited a distinct structural evolution as M changed from V to Ni: from bowl-shaped, to boat-shaped, to an M-centered tubular structure named wheel-shaped, to drum-shaped (the metal atom was adsorbed on top of the cross section of the B16 species). Our analysis shows that hyper-coordination and the size of the metal atom are two competing factors determining the relative stability and topological properties of the (M©B16)0/-1 clusters, resulting in unprecedented structures for Sc, Ti, and Ni-doped clusters. The calculated binding energies for these new configurations are even larger than those of the previously synthesized B16-1, (Mn©B16)-1, and (Co©B16)-1 clusters, indicating their very good stability and possible experimental synthesis. A net charge transfer from the metal atom to the boron moiety occurs for all clusters, indicating that electrostatic interactions play an important role in the stability of these materials. Finally, the Sc©M16 and Ti©B16 clusters exhibit not only excellent thermal stability but also large first hyper-polarizability. Hence, they are expected to be potential innovative candidates for excellent electro-optical materials.
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Affiliation(s)
- Zabiollah Mahdavifar
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Fazel Shojaei
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
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5
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Huang SD, Shang C, Kang PL, Liu ZP. Atomic structure of boron resolved using machine learning and global sampling. Chem Sci 2018; 9:8644-8655. [PMID: 30627388 PMCID: PMC6289100 DOI: 10.1039/c8sc03427c] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 09/11/2018] [Indexed: 01/26/2023] Open
Abstract
Boron crystals, despite their simple composition, must rank top for complexity: even the atomic structure of the ground state of β-B remains uncertain after 60 years' study. This makes it difficult to understand the many exotic photoelectric properties of boron. The presence of self-doping atoms in the crystal interstitial sites forms an astronomical configurational space, making the determination of the real configuration virtually impossible using current techniques. Here, by combining machine learning with the latest stochastic surface walking (SSW) global optimization, we explore for the first time the potential energy surface of β-B, revealing 15 293 distinct configurations out of the 2 × 105 minima visited, and reveal the key rules governing the filling of the interstitial sites. This advance is only allowed by the construction of an accurate and efficient neural network (NN) potential using a new series of structural descriptors that can sensitively discriminate the complex boron bonding environment. We show that, in contrast to the conventional views on the numerous energy-degenerate configurations, only 40 minima of β-B are identified to be within 7 meV per atom in energy above the global minimum of β-B, most of them having been discovered for the first time. These low energy structures are classified into three types of skeletons and six patterns of doping configurations, with a clear preference for a few characteristic interstitial sites. The observed β-B and its properties are influenced strongly by a particular doping site, the B19 site that neighbors the B18 site, which has an exceptionally large vibrational entropy. The configuration with this B19 occupancy, which ranks only 15th at 0 K, turns out to be dominant at high temperatures. Our results highlight the novel SSW-NN architecture as the leading problem solver for complex material phenomena, which would then expedite substantially the building of a material genome database.
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Affiliation(s)
- Si-Da Huang
- Collaborative Innovation Center of Chemistry for Energy Materials , Key Laboratory of Computational Physical Science (Ministry of Education) , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
| | - Cheng Shang
- Collaborative Innovation Center of Chemistry for Energy Materials , Key Laboratory of Computational Physical Science (Ministry of Education) , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
| | - Pei-Lin Kang
- Collaborative Innovation Center of Chemistry for Energy Materials , Key Laboratory of Computational Physical Science (Ministry of Education) , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
| | - Zhi-Pan Liu
- Collaborative Innovation Center of Chemistry for Energy Materials , Key Laboratory of Computational Physical Science (Ministry of Education) , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
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Deringer VL, Pickard CJ, Csányi G. Data-Driven Learning of Total and Local Energies in Elemental Boron. PHYSICAL REVIEW LETTERS 2018; 120:156001. [PMID: 29756876 DOI: 10.1103/physrevlett.120.156001] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/26/2018] [Indexed: 05/26/2023]
Abstract
The allotropes of boron continue to challenge structural elucidation and solid-state theory. Here we use machine learning combined with random structure searching (RSS) algorithms to systematically construct an interatomic potential for boron. Starting from ensembles of randomized atomic configurations, we use alternating single-point quantum-mechanical energy and force computations, Gaussian approximation potential (GAP) fitting, and GAP-driven RSS to iteratively generate a representation of the element's potential-energy surface. Beyond the total energies of the very different boron allotropes, our model readily provides atom-resolved, local energies and thus deepened insight into the frustrated β-rhombohedral boron structure. Our results open the door for the efficient and automated generation of GAPs, and other machine-learning-based interatomic potentials, and suggest their usefulness as a tool for materials discovery.
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Affiliation(s)
- Volker L Deringer
- Engineering Laboratory, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Chris J Pickard
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Advanced Institute for Materials Research, Tohoku University 2-1-1 Katahira, Aoba, Sendai, 980-8577, Japan
| | - Gábor Csányi
- Engineering Laboratory, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
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Li WL, Chen X, Jian T, Chen TT, Li J, Wang LS. From planar boron clusters to borophenes and metalloborophenes. Nat Rev Chem 2017. [DOI: 10.1038/s41570-017-0071] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Ocampo-Néstor AL, Trujillo-Ferrara JG, Abad-García A, Reyes-López C, Geninatti-Crich S, Soriano-Ursúa MA. Boron's journey: advances in the study and application of pharmacokinetics. Expert Opin Ther Pat 2017; 27:203-215. [PMID: 27788608 DOI: 10.1080/13543776.2017.1252750] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Boron-containing compounds (BCCs) are attractive chemical entities in drug development. Some of these compounds have been used in the treatment of human disease, and studies on their pharmacodynamics suggest that they employ multiple forms of activity. However, less is known about the pharmacokinetic profile of these molecules. Areas covered: The herein compiled reported data is presented in accordance with the classical 'ADME' system for identifying the scope of BCCs in the respective fields. Our analysis suggests that these compounds have several distinct ways to move within the human body, and that the specific structural features of each molecule account for its distinct pharmacokinetic profile. These insights should be useful for designing BCCs with a desired effect. Expert opinion: Increasing knowledge about the pharmacokinetics of BCCs is providing a broader understanding about the design of new release systems and potential drugs, as well as probable protein transporters that could be related to key roles in physiological processes. These transporters may be involved in sodium transport, hormone release and regulation of the cell cycle. The shared features among groups of BCCs are being identified in order to apply these insights to the design of advantageous compounds.
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Affiliation(s)
- Ana L Ocampo-Néstor
- a Departamentos de Fisiología y Bioquímica , Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional. Plan de San Luis y Díaz Mirón s/n , México City , Del. Miguel Hidalgo , México
| | - José G Trujillo-Ferrara
- a Departamentos de Fisiología y Bioquímica , Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional. Plan de San Luis y Díaz Mirón s/n , México City , Del. Miguel Hidalgo , México
| | - Antonio Abad-García
- a Departamentos de Fisiología y Bioquímica , Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional. Plan de San Luis y Díaz Mirón s/n , México City , Del. Miguel Hidalgo , México
| | - Cynthia Reyes-López
- a Departamentos de Fisiología y Bioquímica , Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional. Plan de San Luis y Díaz Mirón s/n , México City , Del. Miguel Hidalgo , México
| | - Simonetta Geninatti-Crich
- b Dipartimento di Biotecnologie Molecolari e Scienze per la Salute , Centro Imaging Molecolare. Università di Torino , Torino , Italy
| | - Marvin A Soriano-Ursúa
- a Departamentos de Fisiología y Bioquímica , Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional. Plan de San Luis y Díaz Mirón s/n , México City , Del. Miguel Hidalgo , México
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Zhang B, Wu L, Li Z. Predicted structural evolution and detailed insight into configuration correlation, mechanical properties of silicon–boron binary compounds. RSC Adv 2017. [DOI: 10.1039/c7ra00592j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Low energy structures for SiB6 and SiB36 are proposed; the Si–B/Si–Si/B–B covalent interaction is responsible for the mechanical properties of the Si–B binaries.
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Affiliation(s)
- Bo Zhang
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - Lailei Wu
- Key Laboratory of Metastable Materials Science and Technology
- College of Material Science and Engineering
- Yanshan University
- Qinhuangdao 066004
- China
| | - Zhihong Li
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
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An Q, Reddy KM, Xie KY, Hemker KJ, Goddard WA. New Ground-State Crystal Structure of Elemental Boron. PHYSICAL REVIEW LETTERS 2016; 117:085501. [PMID: 27588864 DOI: 10.1103/physrevlett.117.085501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Indexed: 06/06/2023]
Abstract
Elemental boron exhibits many polymorphs in nature based mostly on an icosahedral shell motif, involving stabilization of 13 strong multicenter intraicosahedral bonds. It is commonly accepted that the most thermodynamic stable structure of elemental boron at atmospheric pressure is the β rhombohedral boron (β-B). Surprisingly, using high-resolution transmission electron microscopy, we found that pure boron powder contains grains of two different types, the previously identified β-B containing a number of randomly spaced twins and what appears to be a fully transformed twinlike structure. This fully transformed structure, denoted here as τ-B, is based on the Cmcm orthorhombic space group. Quantum mechanics predicts that the newly identified τ-B structure is 13.8 meV/B more stable than β-B. The τ-B structure allows 6% more charge transfer from B_{57} units to nearby B_{12} units, making the net charge 6% closer to the ideal expected from Wade's rules. Thus, we predict the τ-B structure to be the ground state structure for elemental boron at atmospheric pressure.
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Affiliation(s)
- Qi An
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, USA
| | - K Madhav Reddy
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21210, USA
| | - Kelvin Y Xie
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21210, USA
| | - Kevin J Hemker
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21210, USA
| | - William A Goddard
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, USA
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