1
|
Lee WS, Maeda H, Kuo YT, Muraoka K, Fukui N, Takada K, Sasaki S, Masunaga H, Nakayama A, Tian HK, Nishihara H, Sakaushi K. Spontaneous-Spin-Polarized 2D π-d Conjugated Frameworks Towards Enhanced Oxygen Evolution Kinetics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401987. [PMID: 38805737 DOI: 10.1002/smll.202401987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/30/2024] [Indexed: 05/30/2024]
Abstract
Alternative strategies to design sustainable-element-based electrocatalysts enhancing oxygen evolution reaction (OER) kinetics are demanded to develop affordable yet high-performance water-electrolyzers for green hydrogen production. Here, it is demonstrated that the spontaneous-spin-polarized 2D π-d conjugated framework comprising abundant elements of nickel and iron with a ratio of Ni:Fe = 1:4 with benzenehexathiol linker (BHT) can improve OER kinetics by its unique electronic property. Among the bimetallic NiFex:y-BHTs with various ratios with Ni:Fe = x:y, the NiFe1:4-BHT exhibits the highest OER activity. The NiFe1:4-BHT shows a specific current density of 140 A g-1 at the overpotential of 350 mV. This performance is one of the best activities among state-of-the-art non-precious OER electrocatalysts and even comparable to that of the platinum-group-metals of RuO2 and IrO2. The density functional theory calculations uncover that introducing Ni into the homometallic Fe-BHT (e.g., Ni:Fe = 0:1) can emerge a spontaneous-spin-polarized state. Thus, this material can achieve improved OER kinetics with spin-polarization which previously required external magnetic fields. This work shows that a rational design of 2D π-d conjugated frameworks can be a powerful strategy to synthesize promising electrocatalysts with abundant elements for a wide spectrum of next-generation energy devices.
Collapse
Affiliation(s)
- Won Seok Lee
- Research Center for Energy and Environmental Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Hiroaki Maeda
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Yen-Ting Kuo
- Department of Chemical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Koki Muraoka
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Naoya Fukui
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Kenji Takada
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Sono Sasaki
- Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki Hashikami-cho 1, Sakyo-ku, Kyoto, 606-8585, Japan
- SPring-8 Center, RIKEN, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan
| | - Hiroyasu Masunaga
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Hong-Kang Tian
- Department of Chemical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Hiroshi Nishihara
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Ken Sakaushi
- Research Center for Energy and Environmental Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| |
Collapse
|
2
|
Tan CM, Fukui N, Takada K, Maeda H, Selezneva E, Bourgès C, Masunaga H, Sasaki S, Tsukagoshi K, Mori T, Sirringhaus H, Nishihara H. Lateral Heterometal Junction Rectifier Fabricated by Sequential Transmetallation of Coordination Nanosheet. Angew Chem Int Ed Engl 2024; 63:e202318181. [PMID: 38179847 DOI: 10.1002/anie.202318181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/22/2023] [Accepted: 01/03/2024] [Indexed: 01/06/2024]
Abstract
Heterostructures of two-dimensional materials realise novel and enhanced physical phenomena, making them attractive research targets. Compared to inorganic materials, coordination nanosheets have virtually infinite combinations, leading to tunability of physical properties and are promising candidates for heterostructure fabrication. Although stacking of coordination materials into vertical heterostructures is widely reported, reports of lateral coordination material heterostructures are few. Here we show the successful fabrication of a seamless lateral heterojunction showing diode behaviour, by sequential and spatially limited immersion of a new metalladithiolene coordination nanosheet, Zn3 BHT, into aqueous Cu(II) and Fe(II) solutions. Upon immersion, the Zn centres in insulating Zn3 BHT are replaced by Cu or Fe ions, resulting in conductivity. The transmetallation is spatially confined, occurring only within the immersed area. We anticipate that our results will be a starting point towards exploring transmetallation of various two-dimensional materials to produce lateral heterojunctions, by providing a new and facile synthetic route.
Collapse
Affiliation(s)
- Choon Meng Tan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278 8510, Japan
| | - Naoya Fukui
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278 8510, Japan
| | - Kenji Takada
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278 8510, Japan
| | - Hiroaki Maeda
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278 8510, Japan
| | - Ekaterina Selezneva
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278 8510, Japan
- WPI International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, 305-0044, Japan
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Cédric Bourgès
- International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Namiki, Tsukuba, 305-0044, Japan
| | - Hiroyasu Masunaga
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, (Japan)
| | - Sono Sasaki
- Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, 1 Matsugasaki Hashikami-cho, Sakyo-ku, Kyoto 606-8585, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kazuhito Tsukagoshi
- WPI International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Takao Mori
- WPI International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Henning Sirringhaus
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Hiroshi Nishihara
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278 8510, Japan
| |
Collapse
|
3
|
Yu S, Zhang C, Yang H. Two-Dimensional Metal Nanostructures: From Theoretical Understanding to Experiment. Chem Rev 2023; 123:3443-3492. [PMID: 36802540 DOI: 10.1021/acs.chemrev.2c00469] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
This paper reviews recent studies on the preparation of two-dimensional (2D) metal nanostructures, particularly nanosheets. As metal often exists in the high-symmetry crystal phase, such as face centered cubic structures, reducing the symmetry is often needed for the formation of low-dimensional nanostructures. Recent advances in characterization and theory allow for a deeper understanding of the formation of 2D nanostructures. This Review firstly describes the relevant theoretical framework to help the experimentalists understand chemical driving forces for the synthesis of 2D metal nanostructures, followed by examples on the shape control of different metals. Recent applications of 2D metal nanostructures, including catalysis, bioimaging, plasmonics, and sensing, are discussed. We end the Review with a summary and outlook of the challenges and opportunities in the design, synthesis, and application of 2D metal nanostructures.
Collapse
Affiliation(s)
- Siying Yu
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Cheng Zhang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Hong Yang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| |
Collapse
|
4
|
Maeda H, Takada K, Fukui N, Nagashima S, Nishihara H. Conductive coordination nanosheets: Sailing to electronics, energy storage, and catalysis. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
5
|
Toyoda R, Fukui N, Tjhe DHL, Selezneva E, Maeda H, Bourgès C, Tan CM, Takada K, Sun Y, Jacobs I, Kamiya K, Masunaga H, Mori T, Sasaki S, Sirringhaus H, Nishihara H. Heterometallic Benzenehexathiolato Coordination Nanosheets: Periodic Structure Improves Crystallinity and Electrical Conductivity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106204. [PMID: 35040527 DOI: 10.1002/adma.202106204] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Coordination nanosheets are an emerging class of 2D, bottom-up materials having fully π-conjugated, planar, graphite-like structures with high electrical conductivities. Since their discovery, great effort has been devoted to expand the variety of coordination nanosheets; however, in most cases, their low crystallinity in thick films hampers practical device applications. In this study, mixtures of nickel and copper ions are employed to fabricate benzenehexathiolato (BHT)-based coordination nanosheet films, and serendipitously, it is found that this heterometallicity preferentially forms a structural phase with improved film crystallinity. Spectroscopic and scattering measurements provide evidence for a bilayer structure with in-plane periodic arrangement of copper and nickel ions with the NiCu2 BHT formula. Compared with homometallic films, heterometallic films exhibit more crystalline microstructures with larger and more oriented grains, achieving higher electrical conductivities reaching metallic behaviors. Low dependency of Seebeck coefficient on the mixing ratio of nickel and copper ions supports that the large variation in the conductivity data is not caused by change in the intrinsic properties of the films. The findings open new pathways to improve crystallinity and to tune functional properties of 2D coordination nanosheets.
Collapse
Affiliation(s)
- Ryojun Toyoda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Naoya Fukui
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Dionisius H L Tjhe
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Ekaterina Selezneva
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- WPI International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Hiroaki Maeda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Cédric Bourgès
- WPI International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Choon Meng Tan
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Kenji Takada
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Yuanhui Sun
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Ian Jacobs
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Kazuhide Kamiya
- Research Center for Solar Energy Chemistry, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan
| | - Hiroyasu Masunaga
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Takao Mori
- WPI International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, 305-0044, Japan
| | - Sono Sasaki
- Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, 1 Matsugasaki Hashikami-cho, Sakyo-ku, Kyoto, 606-8585, Japan
- RIKEN SPring-8 Centre, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan
| | - Henning Sirringhaus
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| |
Collapse
|
6
|
Sun Y, Huang X, Jin Y, Li Y, Li Z, Zou Y, Sun Y, Xu W. Highly Conductive Organic-Inorganic Hybrid Silver Sulfide with 3D Silver-Sulfur Networks Constructed from Benzenehexathiol: Structural Topology Regulation via Ligand Oxidation. Inorg Chem 2022; 61:5060-5066. [PMID: 35275484 DOI: 10.1021/acs.inorgchem.1c04018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Construction of conductive coordination polymers (CPs) has already become an attractive strategy for the development of organic-inorganic hybrid functional materials with specific electrical performance, due to the great diversity and tunability of the chemical structures, electronic structures, as well as the functions they can offer. Here, we demonstrate a novel highly conductive CP based on silver (I) and benzenehexathiol (BHT), (Ag3BHT)n, which displays a different chemical stoichiometry and structural topology compared to the previously reported (Ag5BHT)n. Detailed structural analysis shows that this is caused by the unintentional oxidation of the ligand molecules during the CP formation process. (Ag3BHT)n displays an electrical conductivity of 39 S cm-1 at room temperature. Ultraviolet photoelectron spectroscopy characterization and density functional theory calculation reveal that its highly conducting behavior comes from the highly doped character of (Ag3BHT)n. In addition, band structure calculation proposed an unusual double Dirac cone. This work emphasizes the importance of the ligand oxidation strategy, which can greatly enrich the family of conductive CPs based on BHT and other noninnocent ligands.
Collapse
Affiliation(s)
- Yue Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xing Huang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yigang Jin
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ze Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ye Zou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yimeng Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei Xu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
7
|
Sakaushi K, Nishihara H. Two-Dimensional π-Conjugated Frameworks as a Model System to Unveil a Multielectron-Transfer-Based Energy Storage Mechanism. Acc Chem Res 2021; 54:3003-3015. [PMID: 33998232 DOI: 10.1021/acs.accounts.1c00172] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
ConspectusAlthough electrochemical energy storage is commonplace in our society, further advancements in this technology are indispensable for the transition to a low-carbon society. Recent intensive research has expanded concepts in this field; however, finding one suitable material to obtain a high energy density accomplishing the criteria of next-generation batteries is still a conundrum. To solve this issue, material investigations based on big data combined with artificial intelligence are a present trend. On the contrary, this Account focuses on an alternative approach, i.e., fundamental research to shed light on key basic principles to design new electrode materials and new principles achieving multielectron transfer, which is a key to improve a specific capacity. In addition to the cation-redox mechanism, materials showing the multielectron-transfer mechanism based on cation-/anion-redox can enrich material choices with high theoretical energy densities. The challenge in this mechanism is that a rational design of electrode materials based on microscopic understanding of underlying electrode processes has not been fully achieved so far. This is a key bottleneck in machine-learning approaches as well because the reliability of outputs from an algorithm is dependent on the reliability of data from a corresponding microscopic electrode process. Therefore, uncovering fundamental mechanisms in electrochemical energy storage remains one of the primary goals for the present research. In our series of investigations, we developed concepts for replacing complex practical electrode materials, such as polyanion or Li-rich layered oxides, by simplified model systems based on two-dimensional (2D) π-conjugated frameworks, which are based on purely organic aromatic systems and metal-containing coordination polymers. These materials are relatively simple, but it is still possible to control their complexity of systems in order to mimic certain aspects of structure-property relations in practical electrode materials. In particular, recent studies have shown that we can tune electronic structures of 2D π-conjugated frameworks, which is a key feature to investigate electron-transfer mechanisms, along with the concept of the threefold correlation approach, i.e., the relations in chemical structures, electronic structures, and electrochemical reactions. In this Account, several model studies focusing on microscopic understandings of structure-electrochemical energy storage functions are presented in which we investigate how the structural periodicity and nature of the coordination environment affect their electronic properties and the electrochemical reactions. In particular, we investigate the effects of combinations of linkers and metal ions toward the mechanism of the electrochemical energy storage reaction. We identified few major factors determining the energy storage mechanism of 2D π-conjugated frameworks. Local configurations of coordinate covalent bonding and organic linkers interact with each other, and these effects provide unique electronic states. These electronic states are projections of intriguing electrochemical features in this materials system, such as cation/anion co-redox mechanism, anion-insertion mechanism, or inductive effect. This Account indicates that 2D π-conjugated frameworks can be applied as models to extract fundamental/microscopic principles in the complicated electrode processes, which is linked to practical electrode materials, such as oxides. Therefore, the approach shown here is a powerful tool to unveil microscopic electrochemical energy storage mechanisms, which is indispensable to advance clean energy technology and accelerate decarbonization.
Collapse
Affiliation(s)
- Ken Sakaushi
- Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hiroshi Nishihara
- Research Center for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| |
Collapse
|
8
|
Wang Y, Chiang C, Chang C, Maeda H, Fukui N, Wang I, Wen C, Lu K, Huang S, Jian W, Chen C, Tsukagoshi K, Nishihara H. Two-Dimensional Bis(dithiolene)iron(II) Self-Powered UV Photodetectors with Ultrahigh Air Stability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100564. [PMID: 34306985 PMCID: PMC8292878 DOI: 10.1002/advs.202100564] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/04/2021] [Indexed: 05/26/2023]
Abstract
Organometallic two-dimensional (2D) nanosheets with tailorable components have recently fascinated the optoelectronic communities due to their solution-processable nature. However, the poor stability of organic molecules may hinder their practical application in photovoltaic devices. Instead of conventional organometallic 2D nanosheets with low weatherability, an air-stable π-conjugated 2D bis(dithiolene)iron(II) (FeBHT) coordination nanosheet (CONASH) is synthesized via bottom-up liquid/liquid interfacial polymerization using benzenehexathiol (BHT) and iron(II) ammonium sulfate [Fe(NH4)2(SO4)2] as precursors. The uncoordinated thiol groups in FeBHT are easily oxidized, but the Fe(NH4)2(SO4)2 dissociation rate is slow, which facilitates the protection of sulfur groups by iron(II) ions. The density functional theory calculates that the resultant FeBHT network gains the oxygen-repelling function for oxidation suppression. In air, the FeBHT CONASH exhibits self-powered photoresponses with short response times (<40 ms) and a spectral responsivity of 6.57 mA W-1, a specific detectivity of 3.13 × 1011 Jones and an external quantum efficiency of 2.23% under 365 nm illumination. Interestingly, the FeBHT self-powered photodetector reveals extremely high long-term air stability, maintaining over 94% of its initial photocurrent after aging for 60 days without encapsulation. These results open the prospect of using organometallic 2D materials in commercialized optoelectronic fields.
Collapse
Affiliation(s)
- Ying‐Chiao Wang
- International Center for Young Scientists (ICYS) and WPI International Center for Materials Nanoarchitectonics (WPI‐MANA)National Institute for Materials Science (NIMS)TsukubaIbaraki305‐0044Japan
| | - Chun‐Hao Chiang
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Chi‐Ming Chang
- Department of ElectrophysicsNational Chiao Tung UniversityHsinchu30010Taiwan
| | - Hiroaki Maeda
- Department of ChemistrySchool of ScienceThe University of TokyoTokyo113‐0033Japan
- Research Center for Science and TechnologyTokyo University of ScienceChiba278‐8510Japan
| | - Naoya Fukui
- Department of ChemistrySchool of ScienceThe University of TokyoTokyo113‐0033Japan
- Research Center for Science and TechnologyTokyo University of ScienceChiba278‐8510Japan
| | - I‐Ta Wang
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Cheng‐Yen Wen
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Kuan‐Cheng Lu
- Department of ElectrophysicsNational Chiao Tung UniversityHsinchu30010Taiwan
| | - Shao‐Ku Huang
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Wen‐Bin Jian
- Department of ElectrophysicsNational Chiao Tung UniversityHsinchu30010Taiwan
| | - Chun‐Wei Chen
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
- Center of Atomic Initiative for New Materials (AI‐MAT)National Taiwan UniversityTaipei10617Taiwan
| | - Kazuhito Tsukagoshi
- International Center for Young Scientists (ICYS) and WPI International Center for Materials Nanoarchitectonics (WPI‐MANA)National Institute for Materials Science (NIMS)TsukubaIbaraki305‐0044Japan
- Department of ElectrophysicsNational Chiao Tung UniversityHsinchu30010Taiwan
| | - Hiroshi Nishihara
- Department of ChemistrySchool of ScienceThe University of TokyoTokyo113‐0033Japan
- Research Center for Science and TechnologyTokyo University of ScienceChiba278‐8510Japan
| |
Collapse
|