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Ngue CM, Ho KF, Sainbileg B, Batsaikhan E, Hayashi M, Lee KY, Chen RS, Leung MK. Conductivity and photoconductivity in a two-dimensional zinc bis(triarylamine) coordination polymer. Chem Sci 2023; 14:1320-1328. [PMID: 36756319 PMCID: PMC9891455 DOI: 10.1039/d2sc06085j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 01/09/2023] [Indexed: 01/11/2023] Open
Abstract
We report the synthesis and characterization of a 2D semiconductive and photoconductive coordination polymer. [Zn(TPPB)(Cl2)]·H2O (1) (TPPB = N 1,N 1,N 4,N 4-tetrakis(4-(pyridin-4-yl)phenyl)benzene-1,4-diamine) consists of a TPPB redox-active linker with bis(triarylamine) as the core. It consists of two redox sites connected with a benzene ring as a bridge. Thus, this forms an extended conjugation pathway when the TPPB ligand is coordinated with the Zn2+ metal ions. The single crystal conductivity measurement revealed conductivity of 1 to be in the range of 0.83 to 1.9 S cm-1. Band structure analysis predicted that 1 is a semiconductor from the delocalization of electronic transport in the network. The computational calculations show the difference in charge distribution between holes and electrons, which led to spatial separation. This implies a long charge carrier lifetime as indicated by lifetime measurement. Incorporating a bis(triarylamine)-based redox-active linker could lead to a new semiconductive scaffold material with photocatalytic applications.
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Affiliation(s)
- Chin May Ngue
- Department of Chemistry, National Taiwan University Taipei 106 Taiwan
| | - Kuan Fu Ho
- Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and TechnologyTaipei 106Taiwan
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan UniversityTaipei 106Taiwan
| | - Erdembayalag Batsaikhan
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan UniversityTaipei 106Taiwan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan UniversityTaipei 106Taiwan
| | - Kuei Yi Lee
- Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and TechnologyTaipei 106Taiwan
| | - Ruei San Chen
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taipei 106 Taiwan
| | - Man Kit Leung
- Department of Chemistry, National Taiwan University Taipei 106 Taiwan
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Suragtkhuu S, Sunderiya S, Purevdorj S, Bat-Erdene M, Sainbileg B, Hayashi M, Bati ASR, Shapter JG, Davaasambuu S, Batmunkh M. Rhenium anchored Ti 3C 2T x (MXene) nanosheets for electrocatalytic hydrogen production. Nanoscale Adv 2023; 5:349-355. [PMID: 36756259 PMCID: PMC9846467 DOI: 10.1039/d2na00782g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 11/30/2022] [Indexed: 06/18/2023]
Abstract
Atomically thin Ti3C2T x (MXene) nanosheets with rich termination groups, acting as active sites for effective functionalization, are used as an efficient solid support to host rhenium (Re) nanoparticles for the electrocatalytic hydrogen evolution reaction (HER). The newly designed electrocatalyst - Re nanoparticles anchored on Ti3C2T x MXene nanosheets (Re@Ti3C2T x ) - exhibited promising catalytic activity with a low overpotential of 298 mV to achieve a current density of 10 mV cm-2, while displaying excellent stability. In comparison, the pristine Ti3C2T x MXene requires higher overpotential of 584 mV to obtain the same current density. After being stored under ambient conditions for 30 days, Re@Ti3C2T x retained 100% of its initial catalytic activity for the HER, while the pristine Ti3C2T x retained only 74.8% of its initial value. According to our theoretical calculations using density functional theory, dual Re anchored MXene (Re@Ti3C2T x ) exhibits a near-zero value of Gibbs free energy (ΔG H* = -0.06 eV) for the HER, demonstrating that the presence of Re significantly enhances the electrocatalytic activity of MXene nanosheets. This work introduces a facile strategy to develop an effective electrocatalyst for electrocatalytic hydrogen production.
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Affiliation(s)
- Selengesuren Suragtkhuu
- Department of Chemistry, Division of Natural Sciences, School of Arts and Sciences, National University of Mongolia Ulaanbaatar 14200 Mongolia
- Queensland Micro- and Nanotechnology Centre, School of Environment and Science, Griffith University Nathan Queensland 4111 Australia
| | - Suvdanchimeg Sunderiya
- Department of Chemistry, Division of Natural Sciences, School of Arts and Sciences, National University of Mongolia Ulaanbaatar 14200 Mongolia
| | - Solongo Purevdorj
- Department of Chemistry, Division of Natural Sciences, School of Arts and Sciences, National University of Mongolia Ulaanbaatar 14200 Mongolia
| | - Munkhjargal Bat-Erdene
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland Brisbane Queensland 4072 Australia
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan University Taipei 106 Taiwan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan University Taipei 106 Taiwan
| | - Abdulaziz S R Bati
- Centre for Organic Photonics & Electronics, School of Chemistry and Molecular Biosciences, The University of Queensland Brisbane Queensland 4072 Australia
| | - Joseph G Shapter
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland Brisbane Queensland 4072 Australia
| | - Sarangerel Davaasambuu
- Department of Chemistry, Division of Natural Sciences, School of Arts and Sciences, National University of Mongolia Ulaanbaatar 14200 Mongolia
| | - Munkhbayar Batmunkh
- Queensland Micro- and Nanotechnology Centre, School of Environment and Science, Griffith University Nathan Queensland 4111 Australia
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Kamal S, Inamdar AI, Chiou K, Sainbileg B, Usman M, Chen J, Luo T, Hayashi M, Hung C, Liaw W, Lu K. Functional Groups Assisted Tunable Dielectric Permittivity of Guest‐Free Zn‐Based Coordination Polymers for Gate Dielectrics. Chemistry 2022; 28:e202103905. [DOI: 10.1002/chem.202103905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Saqib Kamal
- Institute of Chemistry Academia Sinica Taipei 115 Taiwan
- Molecular Science and Technology Taiwan International Graduate Program Institute of Atomic and Molecular Science Academia Sinica Taipei 115 & Department of Chemistry National Tsing Hua University Hsinchu 300 Taiwan
- Department of Chemistry Fu Jen Catholic University New Taipei City 242 Taiwan
| | | | - Kuan‐Ru Chiou
- Department of Physics National Taiwan University Taipei 106 Taiwan
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences National Taiwan University & Center of Atomic Initiative for New Materials National Taiwan University Taipei 106 Taiwan
| | - Muhammad Usman
- Institute of Chemistry Academia Sinica Taipei 115 Taiwan
| | - Jenq‐Wei Chen
- Department of Physics National Taiwan University Taipei 106 Taiwan
| | | | - Michitoshi Hayashi
- Center for Condensed Matter Sciences National Taiwan University & Center of Atomic Initiative for New Materials National Taiwan University Taipei 106 Taiwan
| | | | - Wen‐Feng Liaw
- Molecular Science and Technology Taiwan International Graduate Program Institute of Atomic and Molecular Science Academia Sinica Taipei 115 & Department of Chemistry National Tsing Hua University Hsinchu 300 Taiwan
| | - Kuang‐Lieh Lu
- Institute of Chemistry Academia Sinica Taipei 115 Taiwan
- Department of Chemistry Fu Jen Catholic University New Taipei City 242 Taiwan
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Inamdar AI, Sainbileg B, Lin CJ, Usman M, Kamal S, Chiou KR, Pathak A, Luo TT, Bayikadi KS, Sankar R, Chen JW, Tseng TW, Chen RS, Hayashi M, Chiang MH, Lu KL. Regimented Charge Transport Phenomena in Semiconductive Self-Assembled Rhenium Nanotubes. ACS Appl Mater Interfaces 2022; 14:12423-12433. [PMID: 35254046 DOI: 10.1021/acsami.2c00665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photoconductivity, a crucial property, determines the potential of semiconductor materials for use in optoelectronic and photocatalytic device applications. The one-dimensional metal-organic nanotube semiconducting material [{Re(CO)3}6(bho)(phpy)6]n (MBT 1, where bho is benzene-1,2,3,4,5,6-hexaoate and phpy is 4-phenylpyridine) reported herein exhibits record photocurrent responses at a broad spectral range. MBT 1 is comprised of a unique nanotube structure that is composed of six rhenium sites, six 4-phenylpyridine ligands, and a benzene-1,2,3,4,5,6-hexaoate unit. The highly organized self-assembled molecular bamboo tube MBT 1 displays semiconducting characteristics with a low activation energy of 1.63 meV. The alternating current (AC) and direct current (DC) conductivities of pellet devices are approximately 10-4 S/cm. For a single-crystal device, DC conductivity was found to be 1.5 S/cm, an unprecedented 10 000 times higher. The bandgap of MBT 1 was determined to be 1.03 eV, consistent with the theoretically estimated value of 1.2 eV. Theoretical calculations suggest that the unique structural architecture of MBT 1 allows for effective charge transport, which is facilitated by the spatial separation of electrons and holes that MBT 1 contains. This also eliminates fast charge recombination. The findings are not only chemically and fundamentally important but also have great potential for applications in innovative nano-optoelectronics.
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Affiliation(s)
- Arif I Inamdar
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 106, Taiwan
| | - Chi-Jia Lin
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Muhammad Usman
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Saqib Kamal
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 242, Taiwan
| | - Kuan-Ru Chiou
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | | | | | | | - Raman Sankar
- Institute of Physics, Academia Sinica, Taipei 115, Taiwan
| | - Jenq-Wei Chen
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Tien-Wen Tseng
- Department of Chemical Engineering, National Taipei University of Technology, Taipei 106, Taiwan
| | - Ruei-San Chen
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 106, Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 242, Taiwan
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Bat-Erdene M, Batmunkh M, Sainbileg B, Hayashi M, Bati ASR, Qin J, Zhao H, Zhong YL, Shapter JG. Highly Dispersed Ru Nanoparticles on Boron-Doped Ti 3 C 2 T x (MXene) Nanosheets for Synergistic Enhancement of Electrocatalytic Hydrogen Evolution. Small 2021; 17:e2102218. [PMID: 34411421 DOI: 10.1002/smll.202102218] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/07/2021] [Indexed: 06/13/2023]
Abstract
2D-layered materials have attracted increasing attention as low-cost supports for developing active catalysts for the hydrogen evolution reaction (HER). In addition, atomically thin Ti3 C2 Tx (MXene) nanosheets have surface termination groups (Tx : F, O, and OH), which are active sites for effective functionalization. In this work, heteroatom (boron)-doped Ti3 C2 Tx (MXene) nanosheets are developed as an efficient solid support to host ultrasmall ruthenium (Ru) nanoparticles for electrocatalytic HER. The quantum-mechanical first-principles calculations and electrochemical tests reveal that the B-doping onto 2D MXene nanosheets can largely improve the intermediate H* adsorption kinetics and reduce the charge-transfer resistance toward the HER, leading to increased reactivity of active sites and favorable electrode kinetics. Importantly, the newly designed electrocatalyst based on Ru nanoparticles supported on B-doped MXene (Ru@B-Ti3 C2 Tx ) nanosheets shows a remarkable catalytic activity with low overpotentials of 62.9 and 276.9 mV to drive 10 and 100 mA cm-2 , respectively, for the HER, while exhibiting excellent cycling stabilities. Moreover, according to the theoretical calculations, Ru@B-Ti3 C2 Tx exhibits a near-zero value of Gibbs free energy (ΔGH* = 0.002 eV) for the HER. This work introduces a facile strategy to functionalize MXene for use as a solid support for efficient electrocatalysts.
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Affiliation(s)
- Munkhjargal Bat-Erdene
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia
- Centre for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Munkhbayar Batmunkh
- Centre for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 106, Taiwan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 106, Taiwan
| | - Abdulaziz S R Bati
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia
- Centre for Organic Photonics & Electronics, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia
| | - Jiadong Qin
- Centre for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Huijun Zhao
- Centre for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Yu Lin Zhong
- Centre for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Joseph G Shapter
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia
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Inamdar AI, Sainbileg B, Kamal S, Bayikadi KS, Sankar R, Luo TT, Hayashi M, Chiang MH, Lu KL. Water-assisted spin-flop antiferromagnetic behaviour of hydrophobic Cu-based metal-organic frameworks. Dalton Trans 2021; 50:5754-5758. [PMID: 33949543 DOI: 10.1039/d1dt00673h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Solvent-dependent magnetism in Cu-based metal-organic frameworks (MOFs) is reported. Spin-flop magnetic behaviour occurs at different dehydrated states of MOFs. The oxygens of guest and coordinated water molecules are responsible as water removal tunes the coordination geometry around the Cu centre and the electronic structure of the framework.
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Affiliation(s)
- Arif I Inamdar
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. and Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan and Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan and National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan and Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 106, Taiwan
| | - Saqib Kamal
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. and Molecular Science and Technology, Taiwan International Graduate Program, Institute of Atomic and Molecular Science, Academia Sinica, Taipei 115, Taiwan and Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | | | - Raman Sankar
- Institute of Physics, Academia Sinica, Taipei 115, Taiwan
| | - Tzuoo Tsair Luo
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan and Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 106, Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. and Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan and National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan and Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. and Department of Chemistry, Fu Jen Catholic University, New Taipei City 242, Taiwan
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Bera KP, Kamal S, Inamdar AI, Sainbileg B, Lin HI, Liao YM, Ghosh R, Chang TJ, Lee YG, Cheng-Fu H, Hsu YT, Hayashi M, Hung CH, Luo TT, Lu KL, Chen YF. Intrinsic Ultralow-Threshold Laser Action from Rationally Molecular Design of Metal-Organic Framework Materials. ACS Appl Mater Interfaces 2020; 12:36485-36495. [PMID: 32678568 DOI: 10.1021/acsami.0c07890] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Metal-organic frameworks (MOFs) are superior for multiple applications including drug delivery, sensing, and gas storage because of their tunable physiochemical properties and fascinating architectures. Optoelectronic application of MOFs is difficult because of their porous geometry and conductivity issues. Recently, a few optoelectronic devices have been fabricated by a suitable design of integrating MOFs with other materials. However, demonstration of laser action arising from MOFs as intrinsic gain media still remains challenging, even though some studies endeavor on encapsulating luminescence organic laser dyes into the porous skeleton of MOFs to achieve laser action. Unfortunately, the aggregation of such unstable laser dyes causes photoluminescence quenching and energy loss, which limits their practical application. In this research, unprecedently, we demonstrated ultralow-threshold (∼13 nJ/cm2) MOF laser action by a judicious choice of metal nodes and organic linkers during synthesis of MOFs. Importantly, we also demonstrated that the white random lasing from the beautiful microflowers of organic linkers possesses a porous network, which is utilized to synthesize the MOFs. The highly luminescent broad-band organic linker 1,4-NDC, which itself exhibits a strong white random laser, is used not only to achieve the stimulated emission in MOFs but also to reduce the lasing threshold. Such white lasing has multiple applications from bioimaging to the recently developed versatile Li-Fi technology. In addition, we showed that the smooth facets of MOF microcrystals can show Fabry-Perot resonant cavities having a high quality factor of ∼103 with excellent photostability. Our unique discovery of stable, nontoxic, high-performance MOF laser action will open up a new route for the development of new optoelectronic devices.
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Affiliation(s)
- Krishna Prasad Bera
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Nano-Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Saqib Kamal
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Molecular-Science and Technology Program,Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
- Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Arif I Inamdar
- Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica, Taipei 106, Taiwan and Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 10617, Taiwan
| | - Hung-I Lin
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Ming Liao
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Nano-Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Rapti Ghosh
- Molecular-Science and Technology Program,Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Ting-Jia Chang
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Yen-Guang Lee
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Hou Cheng-Fu
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Nano-Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Yun-Tzu Hsu
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 10617, Taiwan
| | | | - Tzuoo-Tsair Luo
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Yang-Fang Chen
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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Sainbileg B, Batsaikhan E, Hayashi M. Impact of oxygen defects on a ferromagnetic CrI3 monolayer. RSC Adv 2020; 10:42493-42501. [PMID: 35516760 PMCID: PMC9058019 DOI: 10.1039/d0ra08153a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/12/2020] [Indexed: 12/18/2022] Open
Abstract
Natural oxygen defects play a vital role in the integrity, functional properties, and performance of well-known two-dimensional (2D) materials. The recently discovered chromium triiodide (CrI3) monolayer is the first real 2D magnet. However, its interaction with oxygen remains an open fundamental question, an understanding of which is essential for further exploration of its application potentials. Employing the quantum first-principles calculation method, we investigated the influence of oxygen defects on the structural, electronic, and magnetic properties of the CrI3 monolayer at the atomic level. We considered two oxygen-defective CrI3 monolayers with either a single O-attached or single O-doped structure, comparing them with an un-defective pristine monolayer. The two different oxygen defects significantly affect the original architecture of the CrI3 monolayer, being energetically favorable and increasing the stability of the CrI3 monolayer. Moreover, these point defects introduce either deep band lines or middle gap states in the band structure. As a result, the bandgap of oxygen-defective monolayers is reduced by up to 58%, compared with the pristine sheet. Moreover, the magnetic property of the CrI3 monolayer is drastically induced by oxygen defects. Importantly, O-defective CrI3 monolayers possess robust exchange coupling parameters, suggesting relatively higher Curie temperature compared with the un-defective sheet. Our findings reveal that the natural oxygen defects in the CrI3 monolayer enrich its structural, electronic, and magnetic properties. Thus, the controlled oxidation can be an effective way to tune properties and functionalities of the CrI3 monolayer and other ultrathin magnetic materials. This work shows that the natural oxygen defects in the CrI3 monolayer, a first 2D magnet, enrich its structural, electronic, and magnetic properties, offering an effective way of tuning the functionality of CrI3 monolayer and other ultrathin magnets.![]()
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Affiliation(s)
- Batjargal Sainbileg
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
| | - Erdembayalag Batsaikhan
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
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Pathak A, Shen JW, Usman M, Wei LF, Mendiratta S, Chang YS, Sainbileg B, Ngue CM, Chen RS, Hayashi M, Luo TT, Chen FR, Chen KH, Tseng TW, Chen LC, Lu KL. Integration of a (-Cu-S-) n plane in a metal-organic framework affords high electrical conductivity. Nat Commun 2019; 10:1721. [PMID: 30979944 PMCID: PMC6461620 DOI: 10.1038/s41467-019-09682-0] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 03/22/2019] [Indexed: 11/22/2022] Open
Abstract
Designing highly conducting metal–organic frameworks (MOFs) is currently a subject of great interest for their potential applications in diverse areas encompassing energy storage and generation. Herein, a strategic design in which a metal–sulfur plane is integrated within a MOF to achieve high electrical conductivity, is successfully demonstrated. The MOF {[Cu2(6-Hmna)(6-mn)]·NH4}n (1, 6-Hmna = 6-mercaptonicotinic acid, 6-mn = 6-mercaptonicotinate), consisting of a two dimensional (–Cu–S–)n plane, is synthesized from the reaction of Cu(NO3)2, and 6,6′-dithiodinicotinic acid via the in situ cleavage of an S–S bond under hydrothermal conditions. A single crystal of the MOF is found to have a low activation energy (6 meV), small bandgap (1.34 eV) and a highest electrical conductivity (10.96 S cm−1) among MOFs for single crystal measurements. This approach provides an ideal roadmap for producing highly conductive MOFs with great potential for applications in batteries, thermoelectric, supercapacitors and related areas. Metal–organic frameworks that contain metal–sulfur chains have been demonstrated to exhibit good electrical conductivity. Here, the authors integrate a 2D metal–sulfur plane into a metal–organic framework, reporting a single crystal with a high conductivity of 10.96 S/cm.
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Affiliation(s)
- Abhishek Pathak
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.,Department of Engineering and System Science, National Tsing Hua University, Hsinchu, 300, Taiwan.,Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan and National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Jing-Wen Shen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Muhammad Usman
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Ling-Fang Wei
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | | | - Yu-Shin Chang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Batjargal Sainbileg
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 106, Taiwan.,Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 106, Taiwan
| | - Chin-May Ngue
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Ruei-San Chen
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 106, Taiwan.,Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 106, Taiwan
| | - Tzuoo-Tsair Luo
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Fu-Rong Chen
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Kuei-Hsien Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 106, Taiwan.,Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 106, Taiwan
| | - Tien-Wen Tseng
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Li-Chyong Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 106, Taiwan.,Center of Atomic Initiative for New Materials, National Taiwan University, Taipei, 106, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.
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Usman M, Bera KP, Haider G, Sainbileg B, Hayashi M, Lee GH, Peng SM, Chen YF, Lu KL. Single-Molecule-Based Electroluminescent Device as Future White Light Source. ACS Appl Mater Interfaces 2019; 11:4084-4092. [PMID: 30604616 DOI: 10.1021/acsami.8b17107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
During the last two decades, spectacular development of light-emitting diodes (LEDs) has been achieved owing to their widespread application possibilities. However, traditional LEDs suffer from unavoidable energy loss because of the down conversion of photons, toxicity due to the involvement of rare-earth materials in their production, higher manufacturing cost, and reduced thermal stability that prevent them from all-inclusive applications. To address the existing challenges associated with current commercially available white LEDs, herein, we report a broad-band emission originating from an intrinsic lanthanide-free single-molecule-based LED. Self-assembly of a butterfly-shaped strontium-based compound {[Sr(H2btc)2(MeOH)(H2O)2]·2H2O} (1) was achieved through the reaction of Sr(NO3)2 with 1,2,3-benzenetricarboxylic acid hydrate (1,2,3-H3btc) under hydrothermal conditions. A white LED based on this single molecule exhibited a remarkable broad-band luminescence spectrum with Commission Internationale de l'Eclairage (CIE) coordinates at (0.33, 0.32) under 30 mA current injection. Such a broad luminescence spectrum can be attributed to the simultaneous existence of several emission lines originating from the intramolecular interactions within the structure. To further examine the nature of the observed transitions, density functional theory (DFT) calculations were carried out to explore the geometric and electronic properties of the complex. Our study thus paves the way toward a key step for developing a basic understanding and the development of high performance broad-band light-emitting devices with environment-friendly characteristics based on organic-inorganic supramolecular materials.
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Affiliation(s)
- Muhammad Usman
- Institute of Chemistry , Academia Sinica , Taipei 115 , Taiwan
| | - Krishna Prasad Bera
- Nano-Science and Technology Program, Taiwan International Graduate Program , Academia Sinica , Taipei 106 , Taiwan
| | | | | | | | | | | | | | - Kuang-Lieh Lu
- Institute of Chemistry , Academia Sinica , Taipei 115 , Taiwan
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Sainbileg B, Lai YR, Chen LC, Hayashi M. The dual-defective SnS2 monolayers: promising 2D photocatalysts for overall water splitting. Phys Chem Chem Phys 2019; 21:26292-26300. [DOI: 10.1039/c9cp04649f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Photocatalytic water splitting on the dual-defective SnS2 monolayer is a promising way to produce hydrogen fuel from solar energy.
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Affiliation(s)
- Batjargal Sainbileg
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
| | - Ying-Ren Lai
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
| | - Li-Chyong Chen
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences
- National Taiwan University
- Taipei 106
- Taiwan
- Center of Atomic Initiative for New Materials
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