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Andersson EKW, Wu LT, Bertoli L, Weng YC, Friesen D, Elbouazzaoui K, Bloch S, Ovsyannikov R, Giangrisostomi E, Brandell D, Mindemark J, Jiang JC, Hahlin M. Initial SEI formation in LiBOB-, LiDFOB- and LiBF 4-containing PEO electrolytes. J Mater Chem A Mater 2024; 12:9184-9199. [PMID: 38633215 PMCID: PMC11019830 DOI: 10.1039/d3ta07175h] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/08/2024] [Indexed: 04/19/2024]
Abstract
A limiting factor for solid polymer electrolyte (SPE)-based Li-batteries is the functionality of the electrolyte decomposition layer that is spontaneously formed at the Li metal anode. A deeper understanding of this layer will facilitate its improvement. This study investigates three SPEs - polyethylene oxide:lithium tetrafluoroborate (PEO:LiBF4), polyethylene oxide:lithium bis(oxalate)borate (PEO:LiBOB), and polyethylene oxide:lithium difluoro(oxalato)borate (PEO:LiDFOB) - using a combination of electrochemical impedance spectroscopy (EIS), galvanostatic cycling, in situ Li deposition photoelectron spectroscopy (PES), and ab initio molecular dynamics (AIMD) simulations. Through this combination, the cell performance of PEO:LiDFOB can be connected to the initial SPE decomposition at the anode interface. It is found that PEO:LiDFOB had the highest capacity retention, which is correlated to having the least decomposition at the interface. This indicates that the lower SPE decomposition at the interface still creates a more effective decomposition layer, which is capable of preventing further electrolyte decomposition. Moreover, the PES results indicate formation of polyethylene in the SEI in cells based on PEO electrolytes. This is supported by AIMD that shows a polyethylene formation pathway through free-radical polymerization of ethylene.
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Affiliation(s)
- Edvin K W Andersson
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
| | - Liang-Ting Wu
- Department of Chemical Engineering, National Taiwan University of Science and Technology Taipei 106 Taiwan
| | - Luca Bertoli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano Via Luigi Mancinelli 7 20131 Milan Italy
| | - Yi-Chen Weng
- Department of Physics and Astronomy, Uppsala University Box 516 Uppsala 75120 Sweden
| | - Daniel Friesen
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
| | - Kenza Elbouazzaoui
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
| | - Sophia Bloch
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
| | - Ruslan Ovsyannikov
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Erika Giangrisostomi
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie Albert-Einstein-Str. 15 12489 Berlin Germany
| | - Daniel Brandell
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
| | - Jonas Mindemark
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology Taipei 106 Taiwan
| | - Maria Hahlin
- Department of Chemistry -Ångström Laboratory, Uppsala University Box 538 Uppsala 75121 Sweden
- Department of Physics and Astronomy, Uppsala University Box 516 Uppsala 75120 Sweden
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2
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Chou TC, Hu YL, Xie GC, Jiang JC, Peng LY, Tsai HC, Yao CT, Tsai YJ, Huang TY, Hu JW, Chen YC, Tsai MY, Chen YW, Pan PS. The use of multicomponent reactions in the development of bis-boronic acids for the detection of β-sialic acid. Org Biomol Chem 2024; 22:1639-1645. [PMID: 38180439 DOI: 10.1039/d3ob01877f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Sialic acid (SA) is a naturally occurring monosaccharide found in glycoproteins and glycolipids. Changes in the expression of SA are associated with several diseases; thus, the detection of SA is of great significance for biological research, cancer diagnosis, and treatment. Boronic acid analogs have emerged as a promising tool for detecting sugars such as SA due to its reversible covalent bonding ability. In this study, 11 bis-boronic acid compounds and 2 mono-boronic acid compounds were synthesized via a highly efficient Ugi-4CR strategy. The synthesized compounds were subjected to affinity fluorescence binding experiments to evaluate their binding capability to SA. Compound A1 was shown to have a promising binding constant of 2602 ± 100 M-1 at pH = 6.0. Density Functional Theory (DFT) calculations examining the binding modes between A1 and SA indicated that the position of the boronic acid functional group was strongly correlated with its interaction with SA's α-hydroxy acid unit. The DFT calculations were consistent with the observations from the fluorescence experiments, demonstrating that the number and relative positions of the boronic acid functional groups are critical factors in enhancing the binding affinity to SA. DFT calculations of both S and R configuration of A1 indicated that the effect of the S/R configuration of A1 on its binding with β-sialic acid was insignificant as the Ugi-4CR generated racemic products. A fluorine atom was incorporated into the R2 substituent of A1 as an electron-withdrawing group to produce A5, which possessed a significantly higher capability to bind to SA (Keq = 7015 ± 5 M-1 at pH = 6.0). Finally, A1 and A5 were shown to possess exceptional binding selectivity toward β-sialic acid under pH of 6.0 and 6.5 while preferring to bind with glucose, fructose, and galactose under pH of 7.0 and 7.5.
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Affiliation(s)
- Tzu-Ching Chou
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Ying-Li Hu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Guan-Cheng Xie
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Liang-Ying Peng
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Hsiao-Chun Tsai
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Chiao-Tien Yao
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Yi-Jie Tsai
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Ting-Yu Huang
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Jing-Wen Hu
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Yi-Ching Chen
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
| | - Min-Yeh Tsai
- Department of Chemistry and Biochemistry, National Chung Cheng University, Minhsiung, Taiwan
| | - Yi-Wei Chen
- Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Po-Shen Pan
- Department of Chemistry, Tamkang University, No. 151, Yingzhuan Rd., New Taipei City, Tamsui Dist., Taiwan.
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3
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Zhanadilov O, Kim HJ, Lai HJ, Jiang JC, Konarov A, Mentbayeva A, Bakenov Z, Sohn KS, Kaghazchi P, Myung ST. Exploiting High-Voltage Stability of Dual-Ion Aqueous Electrolyte Reinforced by Incorporation of Fiberglass into Zwitterionic Hydrogel Electrolyte. Small 2023; 19:e2302973. [PMID: 37377256 DOI: 10.1002/smll.202302973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/18/2023] [Indexed: 06/29/2023]
Abstract
Rechargeable zinc aqueous batteries are key alternatives for replacing toxic, flammable, and expensive lithium-ion batteries in grid energy storage systems. However, these systems possess critical weaknesses, including the short electrochemical stability window of water and intrinsic fast zinc dendrite growth. Hydrogel electrolytes provide a possible solution, especially cross-linked zwitterionic polymers that possess strong water retention ability and high ionic conductivity. Herein, an in situ prepared fiberglass-incorporated dual-ion zwitterionic hydrogel electrolyte with an ionic conductivity of 24.32 mS cm-1 , electrochemical stability window up to 2.56 V, and high thermal stability is presented. By incorporating this hydrogel electrolyte of zinc and lithium triflate salts, a zinc//LiMn0.6 Fe0.4 PO4 pouch cell delivers a reversible capacity of 130 mAh g-1 in the range of 1.0-2.2 V at 0.1C, and the test at 2C provides an initial capacity of 82.4 mAh g-1 with 71.8% capacity retention after 1000 cycles with a coulombic efficiency of 97%. Additionally, the pouch cell is fire resistant and remains safe after cutting and piercing.
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Affiliation(s)
- Orynbay Zhanadilov
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
| | - Hee Jae Kim
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
| | - Hou-Jen Lai
- Computational and Theoretical Chemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Jyh-Chiang Jiang
- Computational and Theoretical Chemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Aishuak Konarov
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
| | - Almagul Mentbayeva
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
| | - Zhumabay Bakenov
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
| | - Kee-Sun Sohn
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
| | - Payam Kaghazchi
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), 52425, Jülich, Germany
| | - Seung-Taek Myung
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
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Jiang SK, Yang SC, Nikodimos Y, Huang SJ, Lin KY, Kuo YH, Tsai BY, Li JN, Lin SD, Jiang JC, Wu SH, Su WN, Hwang BJ. Lewis Acid Probe for Basicity of Sulfide Electrolytes Investigated by 11B Solid-State NMR. JACS Au 2023; 3:2174-2182. [PMID: 37654594 PMCID: PMC10466319 DOI: 10.1021/jacsau.3c00242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 09/02/2023]
Abstract
Sulfide-based solid-state lithium-ion batteries (SSLIB) have attracted a lot of interest globally in the past few years for their high safety and high energy density over the traditional lithium-ion batteries. However, sulfide electrolytes (SEs) are moisture-sensitive which pose significant challenges in the material preparation and cell manufacturing. To the best of our knowledge, there is no tool available to probe the types and the strength of the basic sites in sulfide electrolytes, which is crucial for understanding the moisture stability of sulfide electrolytes. Herein, we propose a new spectral probe with the Lewis base indicator BBr3 to probe the strength of Lewis basic sites on various sulfide electrolytes by 11B solid-state NMR spectroscopy (11B-NMR). The active sulfur sites and the corresponding strength of the sulfide electrolytes are successfully evaluated by the proposed Lewis base probe. The probed strength of the active sulfur sites of a sulfide electrolyte is consistent with the results of DFT (density functional theory) calculation and correlated with the H2S generation rate when the electrolyte was exposed in moisture atmosphere. This work paves a new way to investigate the basicity and moisture stability of the sulfide electrolytes.
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Affiliation(s)
- Shi-Kai Jiang
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Sheng-Chiang Yang
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Yosef Nikodimos
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Shing-Jong Huang
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Kuan-Yu Lin
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Yi-Hui Kuo
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Bo-Yang Tsai
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Jhao-Nan Li
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Shawn D. Lin
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - Jyh-Chiang Jiang
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
| | - She-Huang Wu
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
| | - Wei-Nien Su
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
| | - Bing Joe Hwang
- Department
of Chemical Engineering, National Taiwan
University of Science and Technology, Taipei 106335, Taiwan
- National
Synchrotron Radiation Research Center (NSRRC), Hsinchu 30076, Taiwan
- Sustainable
Electrochemical Energy Development Center, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
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5
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Pan SH, Nachimuthu S, Hwang BJ, Brunklaus G, Jiang JC. Synergistic dual electrolyte additives for fluoride rich solid-electrolyte interface on Li metal anode surface: Mechanistic understanding of electrolyte decomposition. J Colloid Interface Sci 2023; 649:804-814. [PMID: 37390528 DOI: 10.1016/j.jcis.2023.06.147] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/26/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023]
Abstract
Improving the quality of the solid-electrolyte interphase (SEI) layer is highly imperative to stabilize the Li-metal anodes for the practical application of high-energy-density batteries. However, controllably managing the formation of robust SEI layers on the anode is challenging in state-of-the-art electrolytes. Herein, we discuss the role of dual additives fluoroethylene carbonate (FEC) and lithium difluorophosphate (LiPO2F2, LiPF) within the commercial electrolyte mixture (LiPF6/EC/DEC) considering their reactivity with Li metal anodes using density functional theory (DFT) and ab initio molecular dynamics (AIMD) simulations. Synergistic effects of dual additives on SEI formation mechanisms are explored systematically by invoking different electrolyte mixtures including pure electrolyte (LP47), mono-additive (LP47/FEC and LP47/LiPF), and dual additives (LP47/FEC/LiPF). The present work suggests that the addition of dual additives accelerates the reduction of salt and additives while increasing the formation of a LiF-rich SEI layer. In addition, calculated atomic charges are applied to predict the representative F1s X-ray photoelectron (XPS) signal, and our results agree well with the experimentally identified SEI components. The nature of carbon and oxygen-containing groups resulting from the electrolyte decompositions at the anode surface is also analyzed. We find that the presence of dual additives inhibits undesirable solvent degradation in the respective mixtures, which effectively restricts the hazardous side products at the electrolyte-anode interface and improves SEI layer quality.
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Affiliation(s)
- Shih-Huang Pan
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan
| | - Santhanamoorthi Nachimuthu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan
| | - Bing Joe Hwang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan; National Synchrotron Radiation Research Center (NSRRC), Hsinchu 30076, Taiwan; Sustainable Energy Development Center, National Taiwan University of Science and Technology, Taipei 10617, Taiwan
| | - Gunther Brunklaus
- Helmholtz-Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstraße 46, 48149 Münster, Germany
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan.
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6
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Wu LT, Andersson EKW, Hahlin M, Mindemark J, Brandell D, Jiang JC. A method for modelling polymer electrolyte decomposition during the Li-nucleation process in Li-metal batteries. Sci Rep 2023; 13:9060. [PMID: 37271770 DOI: 10.1038/s41598-023-36271-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/31/2023] [Indexed: 06/06/2023] Open
Abstract
Elucidating the complex degradation pathways and formed decomposition products of the electrolytes in Li-metal batteries remains challenging. So far, computational studies have been dominated by studying the reactions at inert Li-metal surfaces. In contrast, this study combines DFT and AIMD calculations to explore the Li-nucleation process for studying interfacial reactions during Li-plating by introducing Li-atoms close to the metal surface. These Li-atoms were added into the PEO polymer electrolytes in three stages to simulate the spontaneous reactions. It is found that the highly reactive Li-atoms added during the simulated nucleation contribute to PEO decomposition, and the resulting SEI components in this calculation include lithium alkoxide, ethylene, and lithium ethylene complexes. Meanwhile, the analysis of atomic charge provides a reliable guideline for XPS spectrum fitting in these complicated multicomponent systems. This work gives new insights into the Li-nucleation process, and experimental XPS data supporting this computational strategy. The AIMD/DFT approach combined with surface XPS spectra can thus help efficiently screen potential polymer materials for solid-state battery polymer electrolytes.
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Affiliation(s)
- Liang-Ting Wu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 75121, Uppsala, Sweden
| | - Edvin K W Andersson
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 75121, Uppsala, Sweden
| | - Maria Hahlin
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 75121, Uppsala, Sweden
- Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden
| | - Jonas Mindemark
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 75121, Uppsala, Sweden
| | - Daniel Brandell
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 75121, Uppsala, Sweden.
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan.
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7
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Abay TA, Wanna WH, Natarajan T, Tsai YF, Janmanchi D, Jiang JC, Abu-Reziq R, Yu SSF. Selective oxidation of benzene by an iron oxide carbonaceous nanocatalyst prepared from iron perchlorate salts and hydrogen peroxide in benzene and acetonitrile. Molecular Catalysis 2022. [DOI: 10.1016/j.mcat.2022.112397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Fao GD, Jiang JC. Theoretical investigation of CO2 conversion on corrugated g-C3N4 Surface decorated by single-atom of Fe, Co, and Pd. Molecular Catalysis 2022. [DOI: 10.1016/j.mcat.2022.112402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Yizengaw KW, Abay TA, Ayele DW, Jiang JC. The remarkable performance of a single iridium atom supported on hematite for methane activation: a density functional theory study. RSC Adv 2022; 12:23736-23746. [PMID: 36090430 PMCID: PMC9393768 DOI: 10.1039/d2ra03585e] [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: 06/10/2022] [Accepted: 08/13/2022] [Indexed: 11/21/2022] Open
Abstract
The Fe2O3(110)–OV surface is the best in terms of CH4 adsorption energy and C–H bond elongation. Therfore, the Ir/α-Fe2O3(110)–OV surface could be a candidate catalyst for CH4 dehydrogenation reaction.
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Affiliation(s)
- Kefale Wagaw Yizengaw
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
| | - Tigist Ayalew Abay
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Delele Worku Ayele
- Department of Chemistry, College of Science, Bahir Dar University, Bahir Dar, Ethiopia
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
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10
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Lin PJ, Yeh CH, Jiang JC. Theoretical insight into hydroxyl production via H 2O 2 decomposition over the Fe 3O 4(311) surface. RSC Adv 2021; 11:36257-36264. [PMID: 35492765 PMCID: PMC9043428 DOI: 10.1039/d1ra06943h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/16/2021] [Accepted: 11/02/2021] [Indexed: 11/21/2022] Open
Abstract
Fenton's reagent provides a method to produce active hydroxyl radicals (˙OH) for chemical oxidation by mixing iron oxide and hydrogen peroxide, which divides into homogeneous and heterogeneous Fenton's reagent. Heterogeneous Fenton's reagent is fabricated from H2O2 and various iron oxide solid materials, such as α-FeOOH, α-Fe2O3, and Fe3O4. Fe3O4 possesses the Fe2+/Fe3+ mixed valence oxidational state and has been reported to have good catalytic activity. However, the reaction mechanism of H2O2 decomposition on Fe3O4 surfaces is still unclear. In this work, we performed DFT calculations to investigate the H2O2 decomposition mechanisms over the Fe3O4(311) surface. There are two iron environments for H2O2 adsorption and decomposition on the Fe3O4(311) surface, a Fe2+/Fe3+ environment and a Fe3+/Fe3+ environment. We found that the H2O2 can adsorb on the Fe2+/Fe3+ environment by molecular adsorption but by dissociative adsorption on the Fe3+/Fe3+ environment. Our results show that both adsorption structures can produce two OH groups on the Fe3O4(311) surface thermodynamically. In addition, based on the electronic property analysis, H2O2 on the Fe2+/Fe3+ environment follows the Haber-Weiss mechanism to form one OH anion and one OH radical. On the other hand, H2O2 on the Fe3+/Fe3+ environment follows the radical mechanism to form two OH radicals. In particular, the OH radical formed on Fe2+/Fe3+ has energy levels on both sides of the Fermi energy level. It can be expected that this OH radical has good redox activity.
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Affiliation(s)
- Pin-Jun Lin
- Department of Chemical Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd., Sec. 4, Da'an Dist. Taipei 10607 Taiwan
| | - Chen-Hao Yeh
- Department of Materials Science and Engineering, Feng Chia University No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd., Sec. 4, Da'an Dist. Taipei 10607 Taiwan
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11
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Sun ZR, Han Y, Fan TB, Liu L, Liu YH, Jiang JC, Shao ZH, Zhang GJ, Pan XB. [Short- and mid-term outcomes of percutaneous balloon mitral valvuloplasty under the guidance of ultrasound]. Zhonghua Yi Xue Za Zhi 2021; 101:1690-1694. [PMID: 34126718 DOI: 10.3760/cma.j.cn112137-20201009-02786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the safety, short- and mid-term outcomes of percutaneous balloon mitral valvuloplasty (PBMV) guided by the ultrasound. Methods: In this retrospective study, medical data of 15 patients [9 males and 6 females, with an age of (53±13) years] with PBMV under the guidance of ultrasound in Heart Center of Henan Provincial People's Hospital between December 2016 and January 2019 were collected and reviewed. The short-and mid-term outcomes were analyzed. Results: PBMV was successfully performed in all the patients. One patient underwent surgical valve replacement due to severe mitral regurgitation, and the other 14 patients were all followed up successfully. The average follow-up time was (13.8±4.6) months. Comparisons of preoperative and postoperative data showed significant differences in valve area [(1.84±0.43) cm2 vs (0.89±0.24) cm2], left atrial pressure [(11.9±4.5) mmHg (1 mmHg=0.133 kPa) vs (21.9±6.0) mmHg] and mean mitral valve pressure gradient [(10.9±3.2) mmHg vs (20.1±3.6) mmHg](all P<0.01), with no significant differences in mitral regurgitation area (P=0.67). Postoperative follow-up showed that there were no significant differences in mitral valve area, regurgitation area and N-terminal pro-B-type natriuretic peptide (NT-proBNP) between short-and mid-term postoperatively (all P>0.05). There was no secondary operation due to mitral stenosis in 14 patients, and 3 patients with moderate or severe tricuspid regurgitation showed significant improvement, with gradually recovered cardiac function, and there were no deaths in these patients. Conclusion: PBMV guided by the ultrasound is feasible and effective, and exhibits favorable short-and mid-term outcomes.
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Affiliation(s)
- Z R Sun
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Y Han
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - T B Fan
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - L Liu
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Y H Liu
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - J C Jiang
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Z H Shao
- Structural Heart Disease Center, Henan Provincial People's Hospital, Fuwai Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - G J Zhang
- Structural Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - X B Pan
- Structural Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
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12
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Nachimuthu S, Chen TR, Yeh CH, Hong LS, Jiang JC. Combined Density Functional Theory and Microkinetics Study to Predict Optimum Operating Conditions of Si(100) Surface Carbonization by Acetylene for High Power Devices. J Phys Chem Lett 2021; 12:4558-4568. [PMID: 33970645 DOI: 10.1021/acs.jpclett.1c01044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The Si(100) surface carbonization mechanisms by acetylene are explored using density functional theory calculations combined with microkinetic simulations. The most stable acetylene adsorption geometries and their subsequent decomposition mechanisms to form a carbon dimer on the Si surface are investigated. Microkinetics simulations are further used to examine the optimal reaction conditions for obtaining a single-crystalline silicon carbide (SiC). We find that the carbon dimer (C2*) as an end-bridge structure can be formed at 560 K, and the maximum of C2* can be obtained near 640 K. The acetylene adsorbed via the di-σ configuration starts to dehydrogenate when the heating rate is too fast and will form two possible carbon dimers (di-C2* and C2*), which will lead to a polycrystalline SiC buffer layer. We predict that 750 K and 10-6 bar will be the optimum temperature and pressure for obtaining a single-crystalline SiC buffer layer, respectively.
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Affiliation(s)
- Santhanamoorthi Nachimuthu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Tsung-Ruei Chen
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Chen-Hao Yeh
- Department of Materials Science and Engineering, Feng Chia University, Taichung 40724, Taiwan
| | - Lu-Sheng Hong
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
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13
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Huang CJ, Lin KY, Hsieh YC, Su WN, Wang CH, Brunklaus G, Winter M, Jiang JC, Hwang BJ. New Insights into the N-S Bond Formation of a Sulfurized-Polyacrylonitrile Cathode Material for Lithium-Sulfur Batteries. ACS Appl Mater Interfaces 2021; 13:14230-14238. [PMID: 33750110 DOI: 10.1021/acsami.0c22811] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sulfurized polyacrylonitrile (S-cPAN) has been recognized as a particularly promising cathode material for lithium-sulfur (Li-S) batteries due to its ultra-stable cycling performance and high degree of sulfur utilization. Though the synthetic conditions and routes for modification of S-cPAN have been extensively studied, details of the molecular structure of S-cPAN remain yet unclear. Herein, a more reasonable molecular structure consisting of pyridinic/pyrrolic nitrogen (NPD/NPL) is proposed, based on the analysis of combined X-ray photoelectron spectroscopy, 13C/15N solid-state nuclear magnetic resonance, and density functional theory data. The coexistence of vicinal NPD/NPL entities plays a vital role in attracting S2 molecules and facilitating N-S bond formation apart from the generally accepted C-S bond in S-cPAN, which could explain the extraordinary electrochemical features of S-cPAN among various nitrogen-containing sulfurized polymers. This study provides new insights and a better understanding of structural details and relevant bond formation mechanisms in S-cPAN, providing a foundation for the design of new types of sulfurized cathode materials suitable for application in next-generation high-performance Li-S batteries.
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Affiliation(s)
- Chen-Jui Huang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- Sustainable Energy Development Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Kuan-Yu Lin
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Yi-Chen Hsieh
- Helmholtz Institute Münster (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, Münster 48149, Germany
| | - Wei-Nien Su
- Sustainable Energy Development Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 30076, Taiwan
| | - Gunther Brunklaus
- Helmholtz Institute Münster (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, Münster 48149, Germany
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Corrensstr. 46, Münster 48149, Germany
| | - Martin Winter
- Helmholtz Institute Münster (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, Münster 48149, Germany
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Corrensstr. 46, Münster 48149, Germany
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Bing Joe Hwang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- Sustainable Energy Development Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 30076, Taiwan
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14
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Yeh CH, Khan AH, Miyazaki T, Jiang JC. The investigation of methane storage at the Ni-MOF-74 material: a periodic DFT calculation. Phys Chem Chem Phys 2021; 23:12270-12279. [PMID: 34013930 DOI: 10.1039/d1cp01276b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To develop a high-performance methane storage material, an understanding of the mechanism and electronic interactions between methane and the material is essential. In this study, we performed detailed theoretical analyses to investigate the methane storage capacity of Ni-MOF-74 using a large-scale periodic DFT code CONQUEST. In a single pore of the unit cell, we considered three possible sites, iSBU, L, and P sites, where iSBU is the inorganic secondary building unit with a metal center, and L is the linker consisting of the organic building unit, while the P site is the vacuum site in the center of the pore. It shows that the methane molecule adsorption possesses the largest methane molecule adsorption energy on the iSBU site. Our calculations indicate that both C-HO and weak agostic interactions exist between the methane molecule and the iSBU site. The adsorption energy of one methane molecule on the iSBU site is in good agreement with previous experimental and theoretical studies. The calculation of the stepwise methane molecule adsorption shows that the first six methane molecules can first occupy the iSBU sites via C-HO and weak agostic interactions. The second six methane molecules are adsorbed on the remaining L sites, where the C-Hπ interaction becomes important, leading to the synergistic effect together with the C-HO interaction to enhance the adsorption energy of the methane molecule. Finally, it can adsorb up to sixteen CH4 molecules in a single pore of a unit cell at Ni-MOF-74. Moreover, we conducted DOS and EDD analyses, which clearly show that the interactions play a vital role in the adsorption of a methane molecule on Ni-MOF-74, especially the C-HO interaction.
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Affiliation(s)
- Chen-Hao Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan. and First-Principles Simulation Group, Nano-Theory Field, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. and Department of Materials Science and Engineering, Feng Chia University, No. 100, Wenhwa Rd., Seatwen, Taichung 40724, Taiwan
| | - Abdul Hannan Khan
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
| | - Tsuyoshi Miyazaki
- First-Principles Simulation Group, Nano-Theory Field, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
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15
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Le TN, Lin KY, Valaboju A, Lee CK, Jiang JC, Rao NV. The fluorescence turn-off mechanism of a norbornene-derived homopolymer – an Al 3+ colorimetric and fluorescent chemosensor. Mater Adv 2021. [DOI: 10.1039/d1ma00254f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
A norbornene-derived hydrazone polymer was developed for high selectivity, and to be used as an effective colorimetric and fluorescent chemosensor of Al3+ in aqueous solutions.
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Affiliation(s)
- Trong-Nghia Le
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - Kuan-Yu Lin
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - Anusha Valaboju
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - Cheng-Kang Lee
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - N. Vijayakameswara Rao
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
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16
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Hailu YM, Nguyen MT, Jiang JC. Theoretical study on the interaction of iodide electrolyte/organic dye with the TiO 2 surface in dye-sensitized solar cells. Phys Chem Chem Phys 2020; 22:26410-26418. [PMID: 33179644 DOI: 10.1039/d0cp02532a] [Citation(s) in RCA: 4] [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: 11/21/2022]
Abstract
The iodide/triiodide interaction with the dye on a semiconductor surface plays a significant role in understanding the dye-sensitized solar cells (DSSCs) mechanism and improving its efficiency. In the present study, density functional theory (DFT) calculations were used to determine the interaction between the complexed iodide redox couple with dye/TiO2 for the relevance of DSSCs. Three new metal-free organic dyes noted as D1Y, D2Y and D3Y, featured with D-π-A configuration were designed by varying functional groups on the donor moiety. We analyzed the structural and electronic properties of these dyes when standing alone and being adsorbed on the oxide surface with the iodide electrolyte. Of the designed dyes, the incorporation of a strong donor unit in D1Y and D2Y sensitizers in conjunction with iodide electrolytes on the TiO2 surface provides better adsorption and electronic properties in comparison to those from the dye alone on the TiO2 surface. Analysis of density of states (DOS) indicates that the introduction of a strong electron-donating group into the organic dye, mainly D1Y and D2Y with an iodide electrolyte on the surface remarkably upshifts the Fermi energy, thereby improving the efficiency of the DSSCs by an increase of the open-circuit voltage (Voc). The present finding constitutes the basis for achieving a deeper understanding of the intrinsic interaction taking place at the electrolyte/dye/TiO2 interface and provides us with directions for the design of efficient dyes and redox electrolytes for improving DSSCs.
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Affiliation(s)
- Yohannes Mulugeta Hailu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
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17
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Lin L, Zhang CF, Wang P, Gao H, Guan X, Han JL, Jiang JC, Jiang P, Lee KJ, Li D, Men YP, Miao CC, Niu CH, Niu JR, Sun C, Wang BJ, Wang ZL, Xu H, Xu JL, Xu JW, Yang YH, Yang YP, Yu W, Zhang B, Zhang BB, Zhou DJ, Zhu WW, Castro-Tirado AJ, Dai ZG, Ge MY, Hu YD, Li CK, Li Y, Li Z, Liang EW, Jia SM, Querel R, Shao L, Wang FY, Wang XG, Wu XF, Xiong SL, Xu RX, Yang YS, Zhang GQ, Zhang SN, Zheng TC, Zou JH. No pulsed radio emission during a bursting phase of a Galactic magnetar. Nature 2020; 587:63-65. [PMID: 33149293 DOI: 10.1038/s41586-020-2839-y] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/31/2020] [Indexed: 11/10/2022]
Abstract
Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft γ-ray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft γ-ray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-γ-ray repeater (SGR) bursts were detected in γ-ray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.
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Affiliation(s)
- L Lin
- Department of Astronomy, Beijing Normal University, Beijing, People's Republic of China
| | - C F Zhang
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - P Wang
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - H Gao
- Department of Astronomy, Beijing Normal University, Beijing, People's Republic of China
| | - X Guan
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - J L Han
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China.,University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - J C Jiang
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - P Jiang
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - K J Lee
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China. .,Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, People's Republic of China.
| | - D Li
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China. .,University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China.
| | - Y P Men
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - C C Miao
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - C H Niu
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - J R Niu
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - C Sun
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - B J Wang
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Z L Wang
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - H Xu
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - J L Xu
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - J W Xu
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Y H Yang
- School of Astronomy and Space Science, Nanjing University, Nanjing, People's Republic of China
| | - Y P Yang
- South-Western Institute for Astronomy Research, Yunnan University, Kunming, People's Republic of China
| | - W Yu
- Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai, People's Republic of China
| | - B Zhang
- Department of Physics and Astronomy, University of Nevada, Las Vegas, NV, USA.
| | - B-B Zhang
- School of Astronomy and Space Science, Nanjing University, Nanjing, People's Republic of China.,Department of Physics and Astronomy, University of Nevada, Las Vegas, NV, USA.,Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, People's Republic of China
| | - D J Zhou
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China.,University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - W W Zhu
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - A J Castro-Tirado
- Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain.,Departamento de Ingeniería de Sistemas y Automática, Escuela de Ingenierías, Universidad de Málaga, Málaga, Spain
| | - Z G Dai
- School of Astronomy and Space Science, Nanjing University, Nanjing, People's Republic of China.,Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, People's Republic of China
| | - M Y Ge
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Y D Hu
- Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain.,Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - C K Li
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Y Li
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China.,Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, People's Republic of China
| | - Z Li
- Department of Astronomy, Beijing Normal University, Beijing, People's Republic of China
| | - E W Liang
- Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, People's Republic of China
| | - S M Jia
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - R Querel
- National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand
| | - L Shao
- College of Physics, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - F Y Wang
- School of Astronomy and Space Science, Nanjing University, Nanjing, People's Republic of China.,Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, People's Republic of China
| | - X G Wang
- Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, People's Republic of China
| | - X F Wu
- Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, People's Republic of China
| | - S L Xiong
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - R X Xu
- Department of Astronomy, Peking University, Beijing, People's Republic of China.,Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, People's Republic of China
| | - Y-S Yang
- School of Astronomy and Space Science, Nanjing University, Nanjing, People's Republic of China
| | - G Q Zhang
- School of Astronomy and Space Science, Nanjing University, Nanjing, People's Republic of China
| | - S N Zhang
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China.,University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China.,Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - T C Zheng
- Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, People's Republic of China
| | - J-H Zou
- College of Physics, Hebei Normal University, Shijiazhuang, People's Republic of China
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18
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Liu YC, Yeh CH, Lo YF, Nachimuthu S, Lin SD, Jiang JC. In situ spectroscopic and theoretical investigation of methane activation on IrO2 nanoparticles: Role of Ir oxidation state on C-H activation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Busipalli DL, Lin KY, Nachimuthu S, Jiang JC. Enhanced moisture stability of cesium lead iodide perovskite solar cells - a first-principles molecular dynamics study. Phys Chem Chem Phys 2020; 22:5693-5701. [PMID: 32103216 DOI: 10.1039/c9cp06341b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An understanding of the interaction of water with perovskite is crucial in improving the structural stability of the perovskite. Hence, in this study, the structural and electronic properties of the γ-CsPbI3(220) perovskite surface upon the adsorption of water molecules have been investigated based on density functional theory calculations. Also, we perform first-principles ab initio molecular dynamics simulations (AIMD) to explore the structural stability of the γ-CsPbI3(220) perovskite surface in the presence of water molecules, and the results are compared with the conventional cubic CH3NH3PbI3(100) perovskite surface. The water molecules show stronger interactions with the (220) surface of γ-CsPbI3 than the (100) surface of CH3NH3PbI3. However, AIMD results demonstrate that the former is much more stable, and no trace of surface degradation was observed upon the adsorption of water molecules.
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Affiliation(s)
- Dhana Lakshmi Busipalli
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China.
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20
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Damte JY, Zhu ZJ, Lin PJ, Yeh CH, Jiang JC. B, N-co-doped graphene-supported Ir and Pt clusters for methane activation and C─C coupling: A density functional theory study. J Comput Chem 2020; 41:194-202. [PMID: 31618481 DOI: 10.1002/jcc.26088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/15/2019] [Accepted: 09/25/2019] [Indexed: 11/09/2022]
Abstract
Methane conversion by using transition metal catalysts plays in an important role in various usages of the industrial process. The mechanism of methane conversion on B, N-co-doped graphene supported Ir and Pt clusters, BNG-Ir4 and BNG-Pt4, have been investigated using density functional theory calculations. Methane was found to adsorb on BNG-Ir4 and BNG-Pt4 clusters via strong agostic interactions. The first step of methane dehydrogenation on BNG-Ir4 has a lower energy barrier, indicating a facile methane dissociation on BNG-Ir4. In addition, it shows that hydrogen molecule can form on the BNG-Ir4 and hydrogen can desorb from the surface. Besides, the C-C coupling reaction of CH3 to form ethane is a more thermodynamically favorable process than CH3 dehydrogenation on BNG-Ir4. Further, ethane is easier to desorb from the surface due to its low desorption energy. Therefore, the BNG-Ir4 cluster is a potential catalyst for activating methane to form ethane and to produce hydrogen. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Jemal Yimer Damte
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec.4, Da'an Dist., Taipei, 10607, Taiwan
| | - Zhan-Jun Zhu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec.4, Da'an Dist., Taipei, 10607, Taiwan
| | - Pin-Jun Lin
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec.4, Da'an Dist., Taipei, 10607, Taiwan
| | - Chen-Hao Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec.4, Da'an Dist., Taipei, 10607, Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec.4, Da'an Dist., Taipei, 10607, Taiwan
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21
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Lo WT, Yu C, Leggesse EG, Nachimuthu S, Jiang JC. Understanding the Role of Dopant Metal Atoms on the Structural and Electronic Properties of Lithium-Rich Li 1.2Ni 0.2Mn 0.6O 2 Cathode Material for Lithium-Ion Batteries. J Phys Chem Lett 2019; 10:4842-4850. [PMID: 31393733 DOI: 10.1021/acs.jpclett.9b01516] [Citation(s) in RCA: 5] [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: 06/10/2023]
Abstract
Improving the stability of lithium-rich cathode materials is important in refining the overall performance of lithium-ion batteries. Here, we have proposed doping of different metal atoms such as K+, Ca2+, Cd2+, and Al3+ in different sites of Li1.2Ni0.2Mn0.6O2, and we have investigated their structural and electronic properties using first-principles calculations. We found that the Ni ions in the pristine Li1.2Ni0.2Mn0.6O2 structure maintained the +3 oxidation state for a longer time and resulted in the structural deformation during the long cycling process. Whereas, the Ni ions in the Cd-, K-, and Ca-doped Li1.2Ni0.2Mn0.6O2 structure are in the +3 oxidation state for a very short time, compared to the pristine system. Our density functional theory (DFT) results show that the doping of the Cd ion in the Ni site of Li1.2Ni0.2Mn0.6O2 is the most suitable one, because it inhibits structural change, decreases the formation energy, and suppresses the Jahn-Teller distortion, compared with the pristine system and other dopant atoms. This theoretical study gives new insight about doping strategy and will help in improving the electrochemical performance of Li-rich cathode materials.
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Affiliation(s)
- Wen-Tse Lo
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China
| | - Ching Yu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China
| | - Ermias Girma Leggesse
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China
| | - Santhanamoorthi Nachimuthu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China
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22
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Yeh CH, Pham TML, Nachimuthu S, Jiang JC. Effect of External Electric Field on Methane Conversion on IrO2(110) Surface: A Density Functional Theory Study. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01910] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chen-Hao Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Road, Section 4, Da’an District, Taipei 10607, Taiwan
| | - Thong Minh Le Pham
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Road, Section 4, Da’an District, Taipei 10607, Taiwan
| | - Santhanamoorthi Nachimuthu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Road, Section 4, Da’an District, Taipei 10607, Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Road, Section 4, Da’an District, Taipei 10607, Taiwan
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23
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Nachimuthu S, Shie WR, Liaw DJ, Romashko RV, Jiang JC. Theoretical Study of Electrochemical and Electrochromic Properties of Novel Viologen Derivatives: Effects of Donors and π-Conjugation. J Phys Chem B 2019; 123:4735-4744. [PMID: 31070925 DOI: 10.1021/acs.jpcb.9b00393] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We propose a linkage approach by merging ambipolar electrochromic (EC) materials in both π-acceptor-π (π-A-π) and donor-acceptor-donor (D-A-D) configurations and investigated their electrochemical and spectroelectrochemical properties using density functional theory calculations. Here, we considered anthracene, toluene, and pyrene as π-conjugated molecules, triphenylamine (TPA) as a donor, and viologen as an acceptor moiety for π-A-π and D-A-D configurations. We have also explored the substitutional effects in the donor moiety on the overall electrochromism during both oxidation and reduction processes. Here, we mainly focused on the relationship between the structure, substitution of functional groups, electronic and spectral properties, as well as redox potential of the designed monomers. Our calculations indicate that the designed monomers have attractive absorption properties and show clear color switching upon the redox process. We find that the substitution of stronger electron-donating and π-spacer groups create new absorption peaks in the oxidation states. These designed viologen derivatives will be potential candidates, which can be used in both oxidation and reduction processes for upcoming EC devices.
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Affiliation(s)
- Santhanamoorthi Nachimuthu
- Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Wan-Ru Shie
- Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Der-Jang Liaw
- Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | - Roman V Romashko
- Institute of Automation and Control Processes FEB RAS , Vladivostok 690041 , Russia
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
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24
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Wang KT, Nachimuthu S, Jiang JC. Temperature-programmed desorption studies of NH 3 and H 2O on the RuO 2(110) surface: effects of adsorbate diffusion. Phys Chem Chem Phys 2018; 20:24201-24209. [PMID: 30209447 DOI: 10.1039/c8cp02568a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Temperature-programmed desorption (TPD) is one of the most straightforward surface science experiments for the determination of the thermodynamic and kinetic parameters of a reaction. In our previous study (J. Phys. Chem. C, 2013, 117, 6136-6142), we proposed a model combining DFT methods with microkinetics to investigate the TPD spectra of NH3 and H2O on the RuO2(110) surface. Although our model predicted both the physisorption and chemisorption peaks of both adsorbates in agreement with the experimental TPD spectra, it failed to explain the region between the physisorption and chemisorption areas and underestimated the intensity of the adsorbate in these areas. Hence, to improve our model, in this study, we considered the diffusion of adsorbates from the sub-monolayer to the second layer. Accordingly, we simulated the TPD spectra of both NH3 and H2O on the RuO2(110) surface using condensation approximation. Our results indicate that the diffusion barriers of the adsorbates at high coverage are smaller than their direct desorption energies. Hence, the diffusion of the adsorbates to the second layer from the sub-monolayer at higher coverage is kinetically favorable, which then desorb directly even at low temperatures. Furthermore, the simulated TPD spectra clearly depict the previous experimental results of both adsorbates after considering the diffusion.
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Affiliation(s)
- Kai-Ting Wang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China.
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25
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Hailu YM, Nguyen MT, Jiang JC. Effects of the terminal donor unit in dyes with D-D-π-A architecture on the regeneration mechanism in DSSCs: a computational study. Phys Chem Chem Phys 2018; 20:23564-23577. [PMID: 30187074 DOI: 10.1039/c8cp03821j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This theoretical study on dye-sensitized solar cells (DSSCs) includes design strategies for dye donor units to improve the efficiency of DSSCs, and further illuminates the organic dye regeneration mechanism. We have designed a series of new organic sensitizers based on a D-D-π-A architecture to exhibit easy electron transfer and to have remarkable light harvesting properties in the visible region by density functional theory (DFT) and time-dependent (TD)-DFT calculations. Furthermore, the interaction of the organic sensitizers with the conventional redox electrolyte using the triiodide/iodide couple (I3-/I-) is investigated. Our calculations indicate that incorporation of strong electron-donating groups remarkably improves the charge transfer characteristics, optoelectronic properties and rapid dye regeneration as compared to less electron donating substituents. In addition, our study demonstrates the possibility of second electron injection from the oxidized dye complex to the semiconductor surface, which further confirms our recently proposed dye regeneration mechanism.
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Affiliation(s)
- Yohannes Mulugeta Hailu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China.
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26
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Chen J, Nie XA, Jiang JC, Zhou YH. Thermal degradation and plasticizing mechanism of poly(vinyl chloride) plasticized with a novel cardanol derived plasticizer. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/292/1/012008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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27
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Zhang Q, Tsai CY, Abidin T, Jiang JC, Shie WR, Li LJ, Liaw DJ. Transmissive-to-black fast electrochromic switching from a long conjugated pendant group and a highly dispersed polymer/SWNT. Polym Chem 2018. [DOI: 10.1039/c7py01863k] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Electrochromic polymer (ECPblack) demonstrates an ultrahigh contrast ratio (over 80%) in most of the visible regions, and its electrochemical and electrochromic behaviors remarkably accelerate by doping nanotube/polytriarylamine.
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Affiliation(s)
- Qiang Zhang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- 10607 Taipei
- Taiwan
| | - Chou-Yi Tsai
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- 10607 Taipei
- Taiwan
| | - Taufik Abidin
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- 10607 Taipei
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- 10607 Taipei
- Taiwan
| | - Wan-Ru Shie
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- 10607 Taipei
- Taiwan
| | - Lain-Jong Li
- Material Science and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Der-Jang Liaw
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- 10607 Taipei
- Taiwan
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28
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Thi Thu Huong V, Tai TB, Jiang JC, Nguyen MT. Spin-polarized transport properties in some transition metal dithiolene complexes. Phys Chem Chem Phys 2017; 19:32536-32543. [PMID: 29188831 DOI: 10.1039/c7cp05962k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin filtering materials are of great current interest in part due to their applications in molecular electronics. In this study, we carried out a theoretical investigation on the charge transport properties of transition metal (TM) dithiolene complexes with TM = Ni, Fe and Mn by using non-equilibrium Green's function/density functional theory (NEGF-DFT) methods. The characteristics of current-voltage and spin-resolved transmission spectra pointed out that Ni complexes are non-polarized, while Fe and Mn complexes exhibit high polarization and can be regarded as excellent candidates for spin-filtering materials with high spin-filtering efficiency. These differences were rationalized on the basis of electron delocalization over the molecular junction of the partial distribution of α- and β-spin molecular projected self-consistent Hamiltonian (MPSH) orbitals, and also the first eigenchannels of molecular junctions.
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Affiliation(s)
- Vu Thi Thu Huong
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
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29
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30
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Chen WC, Nachimuthu S, Jiang JC. Revealing the influence of Cyano in Anchoring Groups of Organic Dyes on Adsorption Stability and Photovoltaic Properties for Dye-Sensitized Solar Cells. Sci Rep 2017; 7:4979. [PMID: 28694516 PMCID: PMC5504066 DOI: 10.1038/s41598-017-05408-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 04/12/2017] [Accepted: 05/25/2017] [Indexed: 11/08/2022] Open
Abstract
Determining an ideal adsorption configuration for a dye on the semiconductor surface is an important task in improving the overall efficiency of dye-sensitized solar cells. Here, we present a detailed investigation of different adsorption configurations of designed model dyes on TiO2 anatase (101) surface using first principles methods. Particularly, we aimed to investigate the influence of cyano group in the anchoring part of dye on its adsorption stability and the overall photovoltaic properties such as open circuit voltage, electron injection ability to the surface. Our results indicate that the inclusion of cyano group increases the stability of adsorption only when it adsorbs via CN with the surface and it decreases the photovoltaic properties when it does not involve in binding. In addition, we also considered full dyes based on the results of model dyes and investigated the different strength of acceptor abilities on stability and electron injection ability. Among the various adsorption configurations considered here, the bidentate bridging mode (A3) is more appropriate one which has higher electron injection ability, larger VOC value and more importantly it has higher dye loading on the surface.
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Affiliation(s)
- Wei-Chieh Chen
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan, ROC
| | - Santhanamoorthi Nachimuthu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan, ROC.
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan, ROC.
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31
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Liu YC, Nachimuthu S, Tsau KH, Ku Y, Jiang JC. An Experimental Study on the Reduction Kinetics of Iron Titanium Based Oxygen Carriers with CO Validated by First Principle Calculations. ChemistrySelect 2017. [DOI: 10.1002/slct.201601138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yu-Cheng Liu
- Environmental Engineering Laboratory; Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 10607 Taiwan
| | - Santhanamoorthi Nachimuthu
- Computational and Theoretical Chemistry Laboratory; Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 10607 Taiwan
| | - Kai-Hao Tsau
- Computational and Theoretical Chemistry Laboratory; Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 10607 Taiwan
| | - Young Ku
- Environmental Engineering Laboratory; Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 10607 Taiwan
| | - Jyh-Chiang Jiang
- Computational and Theoretical Chemistry Laboratory; Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 10607 Taiwan
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32
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Wang PI, Tsai CY, Hsiao YJ, Jiang JC, Liaw DJ. High-Purity Semiconducting Single-Walled Carbon Nanotubes via Selective Dispersion in Solution Using Fully Conjugated Polytriarylamines. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01991] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Po-I Wang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 10607, Taipei, Taiwan
| | - Chou-Yi Tsai
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 10607, Taipei, Taiwan
| | - Yung-Jou Hsiao
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 10607, Taipei, Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 10607, Taipei, Taiwan
| | - Der-Jang Liaw
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 10607, Taipei, Taiwan
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33
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34
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Lee CH, Huang HY, Lee JJ, Huang CY, Kao YC, Lee GH, Peng SM, Jiang JC, Chao I, Lu KL. Amide-CO2Interaction Induced Gate-Opening Behavior for CO2Adsorption in 2-Fold Interpenetrating Framework. ChemistrySelect 2016. [DOI: 10.1002/slct.201600345] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cheng-Hua Lee
- Institute of Chemistry; Academia Sinica; Taipei 115 Taiwan
- Graduate Institute of Applied Science and Technology; National Taiwan University of Science and Technology; Taipei 106 Taiwan
| | - Hung-Yu Huang
- Institute of Chemistry; Academia Sinica; Taipei 115 Taiwan
- Department of Chemistry; National Taiwan Normal University; Taipei 116 Taiwan
| | - Jey-Jau Lee
- National Synchrotron Radiation Research Center; Hsinchu 300 Taiwan
| | | | - Ya-Chuan Kao
- Institute of Chemistry; Academia Sinica; Taipei 115 Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry; National Taiwan University; Taipei 106 Taiwan
| | - Shie-Ming Peng
- Institute of Chemistry; Academia Sinica; Taipei 115 Taiwan
- Department of Chemistry; National Taiwan University; Taipei 106 Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering; National Taiwan University of Science and Technology; Taipei 106 Taiwan
| | - Ito Chao
- Institute of Chemistry; Academia Sinica; Taipei 115 Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry; Academia Sinica; Taipei 115 Taiwan
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35
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Jiang JC, Kuo JL, Tsai MK. Guest Editorial: Journal of the Chinese Chemical Society 6/2016. J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201680641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Liu YC, Nachimuthu S, Chuang YC, Ku Y, Jiang JC. Reduction mechanism of iron titanium based oxygen carriers with H2for chemical looping applications – a combined experimental and theoretical study. RSC Adv 2016. [DOI: 10.1039/c6ra22922k] [Citation(s) in RCA: 8] [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: 11/21/2022] Open
Abstract
The role of iron titanium oxides in the reduction reactions for the CLP is investigated through experimental and theoretical methods. The experimentally predicated activation energies are in good agreement with theoretical values.
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Affiliation(s)
- Yu-Cheng Liu
- Environmental Engineering Laboratory
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Santhanamoorthi Nachimuthu
- Computational and Theoretical Chemistry Laboratory
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Yu-Cheng Chuang
- Computational and Theoretical Chemistry Laboratory
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Young Ku
- Environmental Engineering Laboratory
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Jyh-Chiang Jiang
- Computational and Theoretical Chemistry Laboratory
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
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37
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Nachimuthu S, Chen WC, Leggesse EG, Jiang JC. First principles study of organic sensitizers for dye sensitized solar cells: effects of anchoring groups on optoelectronic properties and dye aggregation. Phys Chem Chem Phys 2016; 18:1071-81. [DOI: 10.1039/c5cp04877j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Efficient organic sensitizers with improved spectral properties and less aggregation have been proposed for practical DSSCs based on theoretical calculations.
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Affiliation(s)
- Santhanamoorthi Nachimuthu
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Republic of China
| | - Wei-Chieh Chen
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Republic of China
| | - Ermias Girma Leggesse
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Republic of China
- Department of Chemistry
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Republic of China
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38
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Wang PI, Shie WR, Jiang JC, Li LJ, Liaw DJ. Novel poly(triphenylamine-alt-fluorene) with asymmetric hexaphenylbenzene and pyrene moieties: synthesis, fluorescence, flexible near-infrared electrochromic devices and theoretical investigation. Polym Chem 2016. [DOI: 10.1039/c5py01971k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A new triphenylamine-alt-fluorene conjugated polymer with hexaphenylbenzene and pyrene for near-infrared electrochromism supported by DFT calculation and simulated spectra.
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Affiliation(s)
- Po-I. Wang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Wan-Ru Shie
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Lain-Jong Li
- Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955
- Saudi Arabia
| | - Der-Jang Liaw
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
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39
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Chang HC, Jiang JC, Kuo MH, Hsu DT, Lin SH. Pressure-enhanced surface interactions between nano-TiO2 and ionic liquid mixtures probed by high pressure IR spectroscopy. Phys Chem Chem Phys 2015; 17:21143-8. [DOI: 10.1039/c4cp04768k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of pressure-enhanced C–H⋯nano-TiO2 interactions around the C–H groups was observed.
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Affiliation(s)
- Hai-Chou Chang
- Department of Chemistry
- National Dong Hwa University
- Shoufeng
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Meng-Hsiu Kuo
- Department of Chemistry
- National Dong Hwa University
- Shoufeng
- Taiwan
| | - Ding-Tsai Hsu
- Department of Chemistry
- National Dong Hwa University
- Shoufeng
- Taiwan
| | - Sheng Hsien Lin
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
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40
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Abstract
We employed density functional theory (DFT) calculations to examine the adsorption configurations and possible reaction paths for H2S on a Ge(100) surface.
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Affiliation(s)
- Tsung-Fan Teng
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
- Department of Chemistry
| | | | - Wei-Hsiu Hung
- Department of Chemistry
- National Taiwan Normal University
- Taipei 116
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
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41
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Lee CH, Wu JY, Lee GH, Peng SM, Jiang JC, Lu KL. Amide-containing zinc(ii) metal–organic layered networks: a structure–CO2 capture relationship. Inorg Chem Front 2015. [DOI: 10.1039/c4qi00241e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An intimate interrelationship between the structural characteristics and their CO2 adsorption behavior has been demonstrated in this study.
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Affiliation(s)
- Cheng-Hua Lee
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
- Graduate Institute of Applied Science and Technology
| | - Jing-Yun Wu
- Department of Applied Chemistry
- National Chi Nan University
- Nantou 545
- Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry
- National Taiwan University
- Taipei 107
- Taiwan
| | - Shie-Ming Peng
- Department of Chemistry
- National Taiwan University
- Taipei 107
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
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42
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Nachimuthu S, Lai KH, Taufany F, Jiang JC. Theoretical study on molecular design and optical properties of organic sensitizers. Phys Chem Chem Phys 2014; 16:15389-99. [PMID: 24946111 DOI: 10.1039/c4cp01653j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A series of organic sensitizers based on different configurations such as D-π-A, D-[π]n-A, D-π-[A]n, [D]n-π-A, D-π-A-π-D, D-π-[A]n-π-D and D-[π-A]n-π-D (where n = 1-4) are designed using theoretical methods. The effects of repeating π-linker, donor-acceptor moieties and the substitution of additional donor-acceptor moieties on the optoelectronic properties have been addressed. Our results show that the strength of the acceptor units changes the mono band absorption into dual band absorption in all the considered strategies. We found that repeating π-linker/donor moieties in the D-π-A series enhances the intensity of the absorption and can tune their absorption spectra from UV-to-visible and visible to near IR regions by repeating acceptor units. Also, the present results indicate that the D-π-A-π-D configuration shows improved optical properties than the conventional D-π-A structure. This theoretical study explores the new configurations and design strategies of organic dyes for developing efficient light harvesting devices working in the whole visible and near IR regions.
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Affiliation(s)
- Santhanamoorthi Nachimuthu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei-106, Taiwan.
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43
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Zou Q, Liu M, Wang GQ, Lu HL, Yang TZ, Guo HM, Ma CR, Xu X, Zhang MH, Jiang JC, Meletis EI, Lin Y, Gao HJ, Chen CL. Step terrace tuned anisotropic transport properties of highly epitaxial LaBaCo2O5.5+δ thin films on vicinal SrTiO3 substrates. ACS Appl Mater Interfaces 2014; 6:6704-6708. [PMID: 24716582 DOI: 10.1021/am500422j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Highly epitaxial LaBaCo2O5.5+δ (LBCO) thin films were grown on different miscut (001) SrTiO3 substrates (miscut angle of 0.5°, 3.0°, and 5.0°) to study the substrate surface step terrace effect on the in-plane electrical transport properties. The microstructure studies by X-ray diffraction and transmission electron microscopy indicate that the as-grown films are A-site disordered cubic perovskite structures with the c-axis highly oriented along the film growth direction. The four-probe scanning tunneling microscopy (STM) studies show that the LBCO thin films grown on the vicinal SrTiO3 substrates have a typical semiconductor behavior with the substrate surface terrace step inducing anisotropic electronic transport properties. These results indicate that in highly epitaxial thin films the surface terrace step induced local strains can play an important role in controlling the electronic transport properties and the anisotropic nature.
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Affiliation(s)
- Q Zou
- Institute of Physics, Chinese Academy of Sciences , Beijing 100080, China
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Ma CR, Liu M, Liu J, Collins G, Zhang YM, Wang HB, Chen CL, Lin Y, He J, Jiang JC, Meletis EI, Jacobson AJ. Interface effects on the electronic transport properties in highly epitaxial LaBaCo2O(5.5+δ) films. ACS Appl Mater Interfaces 2014; 6:2540-2545. [PMID: 24467686 DOI: 10.1021/am404951v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Single-crystalline perovskite LaBaCo2O5.5+δ thin films were grown on a (110) NdGaO3 single-crystal substrate in order to systematically investigate the effect of lattice mismatch on the electrical transport properties in comparison to the films on LaAlO3, SrTiO3, and MgO substrates. Microstructure studies reveal that all of the LaBaCo2O5.5+δ films are of excellent quality with atomically sharp interface structures. The electrical and magnetic transport property studies indicate that the resistivity, magnetoresistance, and magnetic moment of the film are very sensitive to the substrate materials because of the lattice mismatch/interface strain. The Curie temperature, however, is almost independent of the strain imposed by the substrate, probably because of the strong coupling between the nanodomain boundary and interface strain.
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Affiliation(s)
- C R Ma
- Department of Physics and Astronomy, University of Texas at San Antonio , San Antonio, Texas 78249, United States
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Affiliation(s)
- Chia-Ching Wang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Section 4, Taipei 106, Taiwan
| | - Jyun-Yi Wu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Section 4, Taipei 106, Taiwan
| | - Thong L. M. Pham
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Section 4, Taipei 106, Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Section 4, Taipei 106, Taiwan
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Chang HC, Jiang JC, Chang HC, Wang LR, Lee YT. Hydrogen-Bond Rearrangement and Intermolecular Proton Transfer in Protonated Methanol Clusters. Isr J Chem 2013. [DOI: 10.1002/ijch.199900030] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lin JS, Jiang JC, Chang CM, Lai WW, Fang JW, Lin SH, Chang HC. Intermolecular Hydrogen Bonding and Structures in 1,3-Dioxane/D2O Mixtures Studied by High-Pressure Raman Spectroscopy. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200500089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Feng CM, Kao HE, Su CC, Jiang JC, Lin SH, Chang HC. Intermolecular Interactions in Aqueous Dimethyl Sulphoxide and Acetic Acid Probed by High-Pressure FTIR. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200200100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chao MC, Weng NH, Chang HC, Jiang JC, Lin SH. High-Pressure and Concentration-Dependent Studies on C-H-O Interactions of Binary Aqueous Mixtures: Formic Acid/D2O and Acetone/D2O. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200100090] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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