1
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Chen Z, Wang S, Xiong W, Wang F. Enhancing the energetic and magnetic stability of atomic hydrogen chemisorbed on graphene using (non)compensated B-N pairs. Phys Chem Chem Phys 2024; 26:13731-13739. [PMID: 38682161 DOI: 10.1039/d4cp00923a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
In this pioneering study for identifying atomic scale magnetic moment, a single hydrogen atom chemisorbed on pristine graphene exhibits distinct spin polarization. Using first-principles calculations and analyses, we demonstrate that the binding between a H adsorbate and a C substrate is substantially enhanced via compensated B-N pairs embedded into graphene. Surprisingly, the interaction can be further enhanced via non-compensated B-N pair doping. Our established prototype of orbital intercoupling between H 1s and hybridized pz of gapped band edges gives an insight into the enhancing mechanism. For compensated B-N doping, the conduction band minimum (CBM) is pushed upward, which induces stronger interaction between the H 1s and hybridized pz orbitals of the CBM. For non-compensated B-N doping, the orbital interaction occurs between H 1s and hybridized pz orbitals of valence band maximum, thus further lowering the resulting bonding energy due to the enlarged gap. This significantly enhanced interaction between H and C atoms agrees well with the results of charge localization at the gapped band edges. More importantly, the corresponding magnetic moments can be well maintained or even enhanced in both doping; here, one more H atom is needed for non-compensated doping, where its electron occupies the empty CBM. Our findings might provide an effective and practical way to enhance the energetic and magnetic stability of atomic scale magnetic moment on graphene and extensively expand the conception of non-compensated doping.
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Affiliation(s)
- Zhengyan Chen
- College of Software, Henan Finance University, Zhengzhou 450046, China
| | - Sanjun Wang
- College of Artificial Intelligence, Henan Finance University, Zhengzhou 450046, China
| | - Wen Xiong
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Fei Wang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
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2
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Kashida J, Shoji Y, Taka H, Fukushima T. Synthesis and Properties of B 4 N 4 -Heteropentalenes Fused with Polycyclic Hydrocarbons. Chemistry 2023; 29:e202203561. [PMID: 36734177 DOI: 10.1002/chem.202203561] [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: 11/15/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023]
Abstract
Hybrid molecules of π-conjugated carbon rings and BN-heterocyclic rings (h-CBNs) fused with each other have been a rare class of compounds due to the limited availability of their synthetic methods. Here we report the synthesis of new h-CBNs featuring a B4 N4 -heteropentalene core and polycyclic aromatic hydrocarbon wings. Using 1,2-azaborinine derivatives as a building block, we developed a rational synthetic protocol that allows the formation of a B4 N4 ring in a stepwise manner, resulting in the fully fused ABA-type triblock molecules. Thus, three derivatives of 1 bearing naphthalene (1Naph ), anthracene (1Anth ), or phenanthrene (1Phen ) wings fused with the B4 N4 core were synthesized and characterized. Among them, 1Phen , which displays the highest triplet-state energy, was found to serve a host material for phosphorescent OLED devices, for which a maximum external quantum efficiency of 13.7 % was recorded. These findings may promote the synthesis of various types of h-CBNs aiming at new properties arising from the synergy of two different π-electronic systems.
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Affiliation(s)
- Junki Kashida
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.,Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Yoshiaki Shoji
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.,Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Hideo Taka
- Konica Minolta Ishikawa-cho, Hachioji, Tokyo, 192-8505, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.,Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.,Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
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3
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Abstract
The B4CN3 monolayer is fulfilling both the conditions for utilizing it as a hydrogen storage material. First, favorable averaged adsorption energy per H2 molecule which is within the ideal range for faster adsorption/desorption kinetics and second, the H2 uptake capacity of B4CN3 monolayer is higher than the target set by DOE (5.5 wt% by 2020).
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Affiliation(s)
- Rezvan Rahimi
- Department of Chemistry
- Faculty of Science
- Arak University
- Arak 38156-8-8349
- Iran
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4
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Rahimi R, Solimannejad M. First-principles survey on the pristine BC2N monolayer as a promising vehicle for delivery of β-lapachone anticancer drug. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114917] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Rahimi R, Solimannejad M. Hydrogen storage on pristine and Li-decorated BC6N monolayer from first-principles insights. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1827177] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Rezvan Rahimi
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
| | - Mohammad Solimannejad
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
- Institute of Nanosciences and Nanotechnology, Arak University, Arak, Iran
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6
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Yi K, Jin Z, Bu S, Wang D, Liu D, Huang Y, Dong Y, Yuan Q, Liu Y, Wee ATS, Wei D. Catalyst-Free Growth of Two-Dimensional BC xN Materials on Dielectrics by Temperature-Dependent Plasma-Enhanced Chemical Vapor Deposition. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33113-33120. [PMID: 32574487 DOI: 10.1021/acsami.0c08555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Traditional methods to prepare two-dimensional (2D) B-C-N ternary materials (BCxN), such as chemical vapor deposition (CVD), require sophisticated experimental conditions such as high temperature, delicate control of precursors, and postgrowth transfer from catalytic substrates, and the products are generally thick or bulky films without the atomically mixed phase of B-C-N, hampering practical applications of these materials. Here, for the first time, we develop a temperature-dependent plasma-enhanced chemical vapor deposition (PECVD) method to grow 2D BCxN materials directly on noncatalytic dielectrics at low temperature with high controllability. The C, N, and B compositions can be tuned by simply changing the growth temperature. Thus, the properties of the as-made materials including band gap and conductivity are modulated, which is hardly achieved by other methods. A 2D hybridized BC2N film with a mixed BC2N phase is produced, for the first time, with a band gap of about 2.3 eV. The growth temperature is 580-620 °C, much lower than that of traditional catalytic CVD for growing BCxN. The product has a p-type conducting property and can be directly applied in field-effect transistors and sensors without postgrowth transfer, showing great promise for this method in future applications.
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Affiliation(s)
- Kongyang Yi
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
- Institute of Molecular Materials and Devices, Fudan University, 200433 Shanghai, China
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200092, China
| | - Zhepeng Jin
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
- Institute of Molecular Materials and Devices, Fudan University, 200433 Shanghai, China
| | - Saiyu Bu
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
| | - Dingguan Wang
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
| | - Donghua Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
- Institute of Molecular Materials and Devices, Fudan University, 200433 Shanghai, China
| | - Yamin Huang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200092, China
| | - Yemin Dong
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200092, China
| | - Qinghong Yuan
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
| | - Yunqi Liu
- Institute of Molecular Materials and Devices, Fudan University, 200433 Shanghai, China
| | - Andrew Thye Shen Wee
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
| | - Dacheng Wei
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
- Institute of Molecular Materials and Devices, Fudan University, 200433 Shanghai, China
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7
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Study of the functionalization of a hybrid BxCyNz sheet by adsorption of fluorine: Structural, electronic and magnetic properties. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.136940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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9
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Barrios-Vargas JE, Mortazavi B, Cummings AW, Martinez-Gordillo R, Pruneda M, Colombo L, Rabczuk T, Roche S. Electrical and Thermal Transport in Coplanar Polycrystalline Graphene-hBN Heterostructures. NANO LETTERS 2017; 17:1660-1664. [PMID: 28195494 DOI: 10.1021/acs.nanolett.6b04936] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present a theoretical study of electronic and thermal transport in polycrystalline heterostructures combining graphene (G) and hexagonal boron nitride (hBN) grains of varying size and distribution. By increasing the hBN grain density from a few percent to 100%, the system evolves from a good conductor to an insulator, with the mobility dropping by orders of magnitude and the sheet resistance reaching the MΩ regime. The Seebeck coefficient is suppressed above 40% mixing, while the thermal conductivity of polycrystalline hBN is found to be on the order of 30-120 Wm-1 K-1. These results, agreeing with available experimental data, provide guidelines for tuning G-hBN properties in the context of two-dimensional materials engineering. In particular, while we proved that both electrical and thermal properties are largely affected by morphological features (e.g., by the grain size and composition), we find in all cases that nanometer-sized polycrystalline G-hBN heterostructures are not good thermoelectric materials.
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Affiliation(s)
- José Eduardo Barrios-Vargas
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, 08193 Barcelona, Spain
| | - Bohayra Mortazavi
- Institute of Structural Mechanics, Bauhaus-Universität Weimar , Marienstrasse 15, D-99423 Weimar, Germany
| | - Aron W Cummings
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, 08193 Barcelona, Spain
| | - Rafael Martinez-Gordillo
- CINaM - Centre Interdisciplinaire de Nanoscience de Marseille, Aix-Marseille Université , Campus Luminy, Case 913, 13288 Marseille Cedex 9, France
| | - Miguel Pruneda
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, 08193 Barcelona, Spain
| | - Luciano Colombo
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, 08193 Barcelona, Spain
- Dipartimento di Fisica, Universit di Cagliari, Cittadella Universitaria , I-09042 Monserrato, Cagliari, Italy
| | - Timon Rabczuk
- Institute of Structural Mechanics, Bauhaus-Universität Weimar , Marienstrasse 15, D-99423 Weimar, Germany
| | - Stephan Roche
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, 08193 Barcelona, Spain
- ICREA - Institució Catalana de Recerca i Estudis Avançats , 08010 Barcelona, Spain
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10
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Nazir G, Khan MF, Akhtar I, Akbar K, Gautam P, Noh H, Seo Y, Chun SH, Eom J. Enhanced photoresponse of ZnO quantum dot-decorated MoS2 thin films. RSC Adv 2017. [DOI: 10.1039/c7ra01222e] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper reports on high photo responsivity (Rλ ∼ 1913 AW−1) of MoS2 photodetector by decorating a thin layer of ZnO quantum dots on MoS2.
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Affiliation(s)
- Ghazanfar Nazir
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - M. Farooq Khan
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Imtisal Akhtar
- Department of Nanotechnology & Advanced Materials Engineering
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Kamran Akbar
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Praveen Gautam
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Hwayong Noh
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Yongho Seo
- Department of Nanotechnology & Advanced Materials Engineering
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Seung-Hyun Chun
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
| | - Jonghwa Eom
- Department of Physics & Astronomy
- Graphene Research Institute
- Sejong University
- Seoul 05006
- Korea
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11
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Sun Y, Yu G, Liu J, Shen X, Huang X, Chen W. Realizing diverse electronic and magnetic properties in hybrid zigzag BNC nanoribbons via hydrogenation. Phys Chem Chem Phys 2016; 18:1326-40. [PMID: 26658552 DOI: 10.1039/c5cp06069a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By means of first-principles DFT computations, we systematically investigate the geometries, stabilities, electronic and magnetic properties of fully and partially hydrogenated zigzag BNC nanoribbons (fH-zBNCNRs and pH-zBNCNRs) with interfacial N-C or B-C connections. It is revealed that in the lowest-lying configuration of hybrid fH-zBNCNRs, the constituent C and BN segments can possess respective chair and boat conformations and both of them are connected by the chair mode, independent of the N-C/B-C interface. Changing the ribbon width and the ratio of BN to C can endow these fH-zBNCNR systems with abundant electronic and magnetic properties involving nonmagnetic (NM) semiconductivity, ferromagnetic (FM) metallicity, antiferromagnetic (AFM) metallicity as well as AFM half-metallicity. Besides, manipulating the hydrogenation pattern and ratio can also result in rich electronic and magnetic behaviors in pH-zBNCNRs, where NM semiconductivity, AFM semiconductivity, AFM metallicity and even AFM spin gapless semiconductor are observed. Additionally, the origin of the magnetism in these hydrogenated zBNCNRs is analyzed in detail. Finally, all of these hydrogenated BNC structures can possess a favorable formation energy, large binding energy per hydrogen atom and high thermal stability, indicating the great possibility of their experimental realization by hydrogenating pristine zBNCNRs. These valuable insights can be advantageous for promoting hybrid BNC-based nanomaterials in the applications of spintronics and multifunctional nanodevices.
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Affiliation(s)
- Yuanhui Sun
- Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Guangtao Yu
- Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Jingwei Liu
- Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Xiaopeng Shen
- Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Xuri Huang
- Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Wei Chen
- Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Jilin University, Changchun 130023, People's Republic of China.
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12
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Liu Z, Tizei LHG, Sato Y, Lin YC, Yeh CH, Chiu PW, Terauchi M, Iijima S, Suenaga K. Postsynthesis of h-BN/Graphene Heterostructures Inside a STEM. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:252-9. [PMID: 26618896 PMCID: PMC4738398 DOI: 10.1002/smll.201502408] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 10/01/2015] [Indexed: 05/25/2023]
Abstract
Combinations of 2D materials with different physical properties can form heterostructures with modified electrical, mechanical, magnetic, and optical properties. The direct observation of a lateral heterostructure synthesis is reported by epitaxial in-plane graphene growth from the step-edge of hexagonal BN (h-BN) within a scanning transmission electron microscope chamber. Residual hydrocarbon in the chamber is the carbon source. The growth interface between h-BN and graphene is atomically identified as largely N-C bonds. This postgrowth method can form graphene nanoribbons connecting two h-BN domains with different twisting angles, as well as isolated carbon islands with arbitrary shapes embedded in the h-BN layer. The electronic properties of the vertically stacked h-BN/graphene heterostructures are investigated by electron energy-loss spectroscopy (EELS). Low-loss EELS analysis of the dielectric response suggests a robust coupling effect between the graphene and h-BN layers.
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Affiliation(s)
- Zheng Liu
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
| | - Luiz H G Tizei
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS-UMR 8502, Orsay, 91405, France
| | - Yohei Sato
- Division of Electron Crystallography and Spectroscopy, Tohoku University, Sendai, 980-8577, Japan
| | - Yung-Chang Lin
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
| | - Chao-Hui Yeh
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Po-Wen Chiu
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Masami Terauchi
- Division of Electron Crystallography and Spectroscopy, Tohoku University, Sendai, 980-8577, Japan
| | - Sumio Iijima
- Meijo University, Department of Materials Science and Engeering, Nagoya, 468-8502, Japan
| | - Kazu Suenaga
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
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13
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Otero N, El-kelany KE, Pouchan C, Rérat M, Karamanis P. Establishing the pivotal role of local aromaticity in the electronic properties of boron-nitride graphene lateral hybrids. Phys Chem Chem Phys 2016; 18:25315-25328. [PMID: 27711641 DOI: 10.1039/c6cp04502b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Within an attempt to unravel the conundrum of irregular bandgap variations in hybrids of white-graphene (hBN) and graphene (G) observed in both experiment and theory, strong proofs about the decisive role of aromaticity in their electronic properties are brought to light.
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Affiliation(s)
- Nicolás Otero
- Equipe de Chimie Théorique
- ECP Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM) UMR 5254. Hélioparc Pau Pyrénées 2 avenue du Président Angot
- 64053 PAU Cedex 09
- France
- Departamento de Química Física
| | - Khaled E. El-kelany
- Equipe de Chimie Théorique
- ECP Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM) UMR 5254. Hélioparc Pau Pyrénées 2 avenue du Président Angot
- 64053 PAU Cedex 09
- France
- CompChem Lab
| | - Claude Pouchan
- Equipe de Chimie Théorique
- ECP Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM) UMR 5254. Hélioparc Pau Pyrénées 2 avenue du Président Angot
- 64053 PAU Cedex 09
- France
| | - Michel Rérat
- Equipe de Chimie Théorique
- ECP Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM) UMR 5254. Hélioparc Pau Pyrénées 2 avenue du Président Angot
- 64053 PAU Cedex 09
- France
| | - Panaghiotis Karamanis
- Equipe de Chimie Théorique
- ECP Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM) UMR 5254. Hélioparc Pau Pyrénées 2 avenue du Président Angot
- 64053 PAU Cedex 09
- France
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14
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Sánchez-Sánchez C, Brüller S, Sachdev H, Müllen K, Krieg M, Bettinger HF, Nicolaï A, Meunier V, Talirz L, Fasel R, Ruffieux P. On-Surface Synthesis of BN-Substituted Heteroaromatic Networks. ACS NANO 2015; 9:9228-9235. [PMID: 26280065 DOI: 10.1021/acsnano.5b03895] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report on the bottom-up fabrication of BN-substituted heteroaromatic networks achieved by surface-assisted polymerization and subsequent cyclodehydrogenation of specifically designed BN-substituted precursor monomers based on a borazine core structural element. To get insight into the cyclodehydrogenation pathway and the influence of molecular flexibility on network quality, two closely related precursor monomers with different degrees of internal cyclodehydrogenation have been employed. Scanning tunneling microscopy shows that, for both monomers, surface-assisted cyclodehydrogenation allows for complete monomer cyclization and the formation of covalently interlinked BN-substituted polyaromatic hydrocarbon networks on the Ag(111) surface. In agreement with experimental observations, density functional theory calculations reveal a significantly lower energy barrier for the cyclodehydrogenation of the conformationally more rigid precursor monomer, which is also reflected in a higher degree of long-range order of the obtained heteroaromatic network. Our proof-of-concept study will allow for the fabrication of atomically precise substitution patterns within BNC heterostructures.
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Affiliation(s)
- Carlos Sánchez-Sánchez
- Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Sebastian Brüller
- Max Planck Institut for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Hermann Sachdev
- Max Planck Institut for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
- Mechanische Verfahrenstechnik, TU Kaiserslautern , Gottlieb Daimler Straße 44, 67663 Kaiserslautern, Germany
| | - Klaus Müllen
- Max Planck Institut for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Matthias Krieg
- Institut für Organische Chemie, Universität Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Holger F Bettinger
- Institut für Organische Chemie, Universität Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Adrien Nicolaï
- Department of Physics, Rensselaer Polytechnic Institute , Troy, New York 12180, United States
| | - Vincent Meunier
- Department of Physics, Rensselaer Polytechnic Institute , Troy, New York 12180, United States
| | - Leopold Talirz
- Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Roman Fasel
- Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Department of Chemistry and Biochemistry, University of Bern , Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Pascal Ruffieux
- Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
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15
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Li Z, Ye R, Feng R, Kang Y, Zhu X, Tour JM, Fang Z. Graphene Quantum Dots Doping of MoS2 Monolayers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:5235-5240. [PMID: 26255655 DOI: 10.1002/adma.201501888] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 05/25/2015] [Indexed: 06/04/2023]
Abstract
Graphene quantum dots (GQDs) interacting with molybdenum disulfide (MoS2 ) monolayers induce an effective photoexcited charge transfer at the interface. Both the photoluminescence (PL) and valley polarization of this GQDs/MoS2 heterostructure can be modulated under various doping charge densities. The photon-exciton interaction is used to explain and calculate the heterostructure PL control, and is further applied to the valley-polarization tuning.
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Affiliation(s)
- Ziwei Li
- State Key Lab for Mesoscopic Physics, School of Physics, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Ruquan Ye
- Department of Chemistry, Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Rui Feng
- State Key Lab for Mesoscopic Physics, School of Physics, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Yimin Kang
- State Key Lab for Mesoscopic Physics, School of Physics, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Xing Zhu
- State Key Lab for Mesoscopic Physics, School of Physics, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - James M Tour
- Department of Chemistry, Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | - Zheyu Fang
- State Key Lab for Mesoscopic Physics, School of Physics, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
- Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China
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16
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Dai L, Xue Y, Qu L, Choi HJ, Baek JB. Metal-Free Catalysts for Oxygen Reduction Reaction. Chem Rev 2015; 115:4823-92. [DOI: 10.1021/cr5003563] [Citation(s) in RCA: 1830] [Impact Index Per Article: 203.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Liming Dai
- Center
of Advanced Science and Engineering for Carbon (Case4Carbon), Department
of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Yuhua Xue
- Center
of Advanced Science and Engineering for Carbon (Case4Carbon), Department
of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Liangti Qu
- Key
Laboratory of Cluster Science, Ministry of Education of China, Beijing
Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials,
Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Hyun-Jung Choi
- School
of Energy and Chemical Engineering/Center for Dimension-Controllable
Covalent Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), 100 Banyeon, Ulsan, 689-798, South Korea
| | - Jong-Beom Baek
- School
of Energy and Chemical Engineering/Center for Dimension-Controllable
Covalent Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), 100 Banyeon, Ulsan, 689-798, South Korea
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17
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Arenal R, Lopez-Bezanilla A. Boron nitride materials: an overview from 0D to 3D (nano)structures. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2015. [DOI: 10.1002/wcms.1219] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Raul Arenal
- Laboratorio de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon (INA); Universidad de Zaragoza; Zaragoza Spain
- ARAID Foundation; Zaragoza Spain
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18
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Liu Y, Zhou W, Feng J, Wang X. Enhanced spin thermoelectric effects in BN-embedded zigzag graphene nanoribbons. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Xie J, Zhang ZY, Yang DZ, Xue DS, Si MS. Theoretical Prediction of Carrier Mobility in Few-Layer BC2N. J Phys Chem Lett 2014; 5:4073-4077. [PMID: 26278934 DOI: 10.1021/jz502006z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An ideal semiconducting material should simultaneously hold a considerable direct band gap and a high carrier mobility. A 2D planar compound consisting of zigzag chains of C-C and B-N atoms, denoted as BC2N, would be a good candidate. It has a direct band gap of 2 eV, which can be further tuned by changing the layer number. At the same time, our first-principles calculations show that few-layer BC2N possesses a high carrier mobility. The carrier mobility of around one million sqaure centimeters per volt-second is obtained at its three-layer. As our study demonstrated, few-layer BC2N has potential applications in nanoelectronics and optoelectronics.
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Affiliation(s)
- Jiafeng Xie
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - Z Y Zhang
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - D Z Yang
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - D S Xue
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - M S Si
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, Gansu 730000, China
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20
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Gong Y, Shi G, Zhang Z, Zhou W, Jung J, Gao W, Ma L, Yang Y, Yang S, You G, Vajtai R, Xu Q, MacDonald AH, Yakobson BI, Lou J, Liu Z, Ajayan PM. Direct chemical conversion of graphene to boron- and nitrogen- and carbon-containing atomic layers. Nat Commun 2014; 5:3193. [DOI: 10.1038/ncomms4193] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 01/02/2014] [Indexed: 12/24/2022] Open
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21
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Sajjad M, Morell G, Feng P. Advance in novel boron nitride nanosheets to nanoelectronic device applications. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5051-5056. [PMID: 23662583 DOI: 10.1021/am400871s] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report low-temperature synthesis of large-scale boron nitride nanosheets (BNNSs) and their applications for high-performance Schottky diode and gas sensor. Ten minutes of synthesis with a short-pulse-laser-produced plasma deposition technique yields a large amount of highly flat, transparent BNNSs. A basic reason for using short-pulse plasma beams is to avoid nanosheet thermal ablation or have low heat generated. Consequently, it greatly reduces the stress and yield large, flat BNNSs. The average size of obtained BNNS is around 10 μm and thickness is around 1.7 nm. Carbon element has been used for doping BNNSs and achieving BNNSs-based Schottky diode and gas sensing device. Typical current versus voltage characteristics of diode are examined. The breakdown reverse voltage is around -70 V. This probably indicates that the breakdown electric field of BNNSs-based diode is up to 1 × 10(8) V/cm. Sensing behavior of BNNSs-based gas sensor toward methane diluted with dry air is also characterized. The response time and recovery time are around 3 and 5 s at the operating temperature of 150 °C. Relatively, the sensor has poor sensitivity to oxygen gas.
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Affiliation(s)
- Muhammad Sajjad
- Department of Physics, College of Natural Sciences, University of Puerto Rico, San Juan, Puerto Rico 00936-8377, United States
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22
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Dubois SMM, Declerck X, Charlier JC, Payne MC. Spin filtering and magneto-resistive effect at the graphene/h-BN ribbon interface. ACS NANO 2013; 7:4578-4585. [PMID: 23641732 DOI: 10.1021/nn401322t] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Advances in the realization of hybrid graphene/h-BN materials open new ways to control the electronic properties of graphene nanostructures. In this paper, the structural, electronic, and transport properties of heterojunctions made of bare zigzag-shaped h-BN and graphene ribbons are investigated using first-principles techniques. Our results highlight the potential of graphene/h-BN junctions for applications in spintronic devices. At first, density functional theory is used to detail the role played by the edge states and dangling bonds in the electronic and magnetic behavior of h-BN and graphene ribbons. Then, the electronic conductance of the junction is computed in the framework of Green's function-based scattering theory. In its high-spin configuration, the junction reveals a full spin polarization of the propagating carriers around the Fermi energy, and the magnitude of the transmission probability is predicted to be strongly dependent on the relative orientation of magnetic momenta in the leads.
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Affiliation(s)
- Simon Mutien-Marie Dubois
- Cavendish Laboratory, Theory of Condensed Matter Group, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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23
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Electronic and magnetic properties of triangular graphene nanoflakes embedded in fluorographene. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.03.084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Li J, Gao D, Niu X, Si M, Xue D. g-B3N3C: a novel two-dimensional graphite-like material. NANOSCALE RESEARCH LETTERS 2012; 7:624. [PMID: 23148463 PMCID: PMC3512500 DOI: 10.1186/1556-276x-7-624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 11/01/2012] [Indexed: 05/15/2023]
Abstract
: A novel crystalline structure of hybrid monolayer hexagonal boron nitride (BN) and graphene is predicted by means of the first-principles calculations. This material can be derived via boron or nitrogen atoms which are substituted by carbon atoms evenly in the graphitic BN with vacancies. The corresponding structure is constructed from a BN hexagonal ring linking an additional carbon atom. The unit cell is composed of seven atoms, three of which are boron atoms, three are nitrogen atoms, and one is a carbon atom. It shows a similar space structure as graphene, which is thus coined as g-B3N3C. Two stable topological types associated with the carbon bond formation, i.e., C-N or C-B bonds, are identified. Interestingly, distinct ground states of each type, depending on C-N or C-B bonds, and electronic bandgap as well as magnetic properties within this material have been studied systematically. Our work demonstrates a practical and efficient access to electronic properties of two-dimensional nanostructures, providing an approach to tackling open fundamental questions in bandgap-engineered devices and spintronics.
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Affiliation(s)
- Jinyun Li
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Daqiang Gao
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Xiaoning Niu
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Mingsu Si
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Desheng Xue
- Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China
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25
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Song L, Liu Z, Reddy ALM, Narayanan NT, Taha-Tijerina J, Peng J, Gao G, Lou J, Vajtai R, Ajayan PM. Binary and ternary atomic layers built from carbon, boron, and nitrogen. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:4878-4895. [PMID: 22791402 DOI: 10.1002/adma.201201792] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Indexed: 06/01/2023]
Abstract
Two-dimensional (2D) atomic layers derived from bulk layered materials are very interesting from both scientific and application viewpoints, as evidenced from the story of graphene. Atomic layers of several such materials such as hexagonal boron nitride (h-BN) and dichalcogenides are examples that complement graphene. The observed unconventional properties of graphene has triggered interest in doping the hexagonal honeycomb lattice of graphene with atoms such as boron (B) and nitrogen (N) to obtain new layered structures. Individual atomic layers containing B, C, and N of various compositions conform to several stable phases in the three-component phase diagram of B-C-N. Additionally, stacking layers built from C and BN allows for the engineering of new van-der-Waals stacked materials with novel properties. In this paper, the synthesis, characterization, and properties of atomically thin layers, containing B, C, and N, as well as vertically assembled graphene/h-BN stacks are reviewed. The electrical, mechanical, and optical properties of graphene, h-BN, and their hybrid structure are also discussed along with the applications of such materials.
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Affiliation(s)
- Li Song
- Department of Mechanical Engineering & Materials Science, Rice University, Houston, Texas 77005, USA
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26
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Jung J, Qiao Z, Niu Q, Macdonald AH. Transport properties of graphene nanoroads in boron nitride sheets. NANO LETTERS 2012; 12:2936-2940. [PMID: 22524401 DOI: 10.1021/nl300610w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate that the one-dimensional (1D) transport channels that appear in the gap when graphene nanoroads are embedded in boron nitride (BN) sheets are more robust when they are inserted at AB/BA grain boundaries. Our conclusions are based on ab initio electronic structure calculations for a variety of different crystal orientations and bonding arrangements at the BN/C interfaces. This property is related to the valley Hall conductivity present in the BN band structure and to the topologically protected kink states that appear in continuum Dirac models with position-dependent masses.
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Affiliation(s)
- Jeil Jung
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
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27
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Fan X, Shen Z, Liu AQ, Kuo JL. Band gap opening of graphene by doping small boron nitride domains. NANOSCALE 2012; 4:2157-65. [PMID: 22344594 DOI: 10.1039/c2nr11728b] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Boron nitride (BN) domains are easily formed in the basal plane of graphene due to phase separation. With first-principles calculations, it is demonstrated theoretically that the band gap of graphene can be opened effectively around K (or K') points by introducing small BN domains. It is also found that random doping with boron or nitrogen is possible to open a small gap in the Dirac points, except for the modulation of the Fermi level. The surface charges which belong to the π states near Dirac points are found to be redistributed locally. The charge redistribution is attributed to the change of localized potential due to doping effects. The band opening induced by the doped BN domain is found to be due to the breaking of localized symmetry of the potential. Therefore, doping graphene with BN domains is an effective method to open a band gap for carbon-based next-generation microelectronic devices.
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Affiliation(s)
- Xiaofeng Fan
- College of Materials Science and Engineering, Jilin University, Changchun 130012, China.
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Matsuura A, Thrupp N, Gonze X, Pouillon Y, Bruant G, Onida G. The ETSF: An e-Infrastructure That Bridges Simulations and Experiments. Comput Sci Eng 2012. [DOI: 10.1109/mcse.2011.76] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Xie Y, Yu H, Zhang H, Fu H. Tuning the band gaps and work functions via topology and carbon concentration: a first-principles investigation of Cx(BN)y compounds. Phys Chem Chem Phys 2012; 14:4391-7. [DOI: 10.1039/c2cp23964g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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