1
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Cheng C, Liu Y, Sheng G, Jiang X, Kang X, Jiang C, Liu Y, Zhu Y, Cui Y. Construction of Benzoxazine-linked One-Dimensional Covalent Organic Frameworks Using the Mannich Reaction. Angew Chem Int Ed Engl 2024; 63:e202403473. [PMID: 38829678 DOI: 10.1002/anie.202403473] [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: 02/19/2024] [Revised: 05/28/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
Covalent polymerization of organic molecules into crystalline one-dimensional (1D) polymers is effective for achieving desired thermal, optical, and electrical properties, yet it remains a persistent synthetic challenge for their inherent tendency to adopt amorphous or semicrystalline phases. Here we report a strategy to synthesize crystalline 1D covalent organic frameworks (COFs) composing quasi-conjugated chains with benzoxazine linkages via the one-pot Mannich reaction. Through [4+2] and [2+2] type Mannich condensation reactions, we fabricated stoichiometric and sub-stoichiometric 1D covalent polymeric chains, respectively, using doubly and singly linked benzoxazine rings. The validity of their crystal structures has been directly visualized through state-of-the-art cryogenic low-dose electron microscopy techniques. Post-synthetic functionalizations of them with a chiral MacMillan catalyst produce crystalline organic photocatalysts that demonstrated excellent catalytic and recyclable performance in light-driven asymmetric alkylation of aldehydes, affording up to 94 % enantiomeric excess.
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Affiliation(s)
- Cheng Cheng
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yikuan Liu
- Center for Electron Microscopy, Institute for Frontier and Interdisciplinary Sciences, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology and College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Guan Sheng
- Center for Electron Microscopy, Institute for Frontier and Interdisciplinary Sciences, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology and College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Xinru Jiang
- Center for Electron Microscopy, Institute for Frontier and Interdisciplinary Sciences, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology and College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Xing Kang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chao Jiang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yan Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yihan Zhu
- Center for Electron Microscopy, Institute for Frontier and Interdisciplinary Sciences, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology and College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Yong Cui
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
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2
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Wang Y, Qiao Z, Li H, Zhang R, Xiang Z, Cao D, Wang S. Molecular Engineering for Modulating Photocatalytic Hydrogen Evolution of Fully Conjugated 3D Covalent Organic Frameworks. Angew Chem Int Ed Engl 2024; 63:e202404726. [PMID: 38622997 DOI: 10.1002/anie.202404726] [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: 03/08/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/17/2024]
Abstract
Covalent organic frameworks (COFs) have recently shown great potential for photocatalytic hydrogen production. Currently almost all reports are focused on two-dimensional (2D) COFs, while the 3D counterparts are rarely explored due to their non-conjugated frameworks derived from the sp3 carbon based tetrahedral building blocks. Here, we rationally designed and synthesized a series of fully conjugated 3D COFs by using the saddle-shaped cyclooctatetrathiophene derivative as the building block. Through molecular engineering strategies, we thoroughly discussed the influences of key factors including the donor-acceptor structure, hydrophilicity, specific surface areas, as well as the conjugated/non-conjugated structures on their photocatalytic hydrogen evolution properties. The as-synthesized fully conjugated 3D COFs could generate the hydrogen up to 40.36 mmol h-1 g-1. This is the first report on intrinsic metal-free 3D COFs in photocatalytic hydrogen evolution application. Our work provides insight on the structure design of 3D COFs for highly-efficient photocatalysis, and also reveals that the semiconducting fully conjugated 3D COFs could be a useful platform in clear energy-related fields.
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Affiliation(s)
- Yaqin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zelong Qiao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Han Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Rui Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zhonghua Xiang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Dapeng Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Shitao Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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3
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Luo X, Wang Y, Lv H, Wu X. Asymmetric Potential Model of Two-Dimensional Imine Covalent Organic Frameworks with Enhanced Quantum Efficiency for Photocatalytic Water Splitting. J Phys Chem Lett 2024; 15:5467-5475. [PMID: 38748088 DOI: 10.1021/acs.jpclett.4c00980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Two-dimensional (2D) covalent organic frameworks (COFs) assembled using building blocks have been widely employed in photocatalysis due to their customizable optoelectronic characteristics and porous structure, which facilitate charge carrier and mass movement. Nevertheless, the development of COF photocatalysts encounters a continuous obstacle in enhancing the efficiency of photocatalysis, impeded by a limited comprehension of the orbital interaction between molecular fragments and linkers. In this study, we present a model that examines the interaction between molecular fragments in an imine-based COF at the frontier molecular orbital level, enabling us to comprehend the impact of manipulating linkers on light adsorption, exciton efficiency, and catalytic activity. Our findings demonstrate that altering the connecting orientation of 14 R-C=N-R imine linkers in 2D COFs can enhance solar-to-hydrogen (STH) efficiency under visible light from 2.76% to 4.24%. This research has the potential to provide a valuable model for refining photocatalysts with enhanced photocatalytic performance.
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Affiliation(s)
- Xiao Luo
- Key laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Sciences, and Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yunlei Wang
- Key laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Sciences, and Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haifeng Lv
- Key laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Sciences, and Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaojun Wu
- Key laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Sciences, and Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui 230026, China
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4
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Prieto T, Ponte C, Guntermann R, Medina DD, Salonen LM. Synthetic Strategies to Extended Aromatic Covalent Organic Frameworks. Chemistry 2024:e202401344. [PMID: 38771916 DOI: 10.1002/chem.202401344] [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: 04/04/2024] [Revised: 05/17/2024] [Accepted: 05/20/2024] [Indexed: 05/23/2024]
Abstract
π-Conjugated materials are highly attractive owing to their unique optical and electronic properties. Covalent organic frameworks (COFs) offer a great opportunity for precise arrangement of building units in a π-conjugated crystalline matrix and tuning of the properties through choice of functionalities or post-synthetic modification. With this review, we aim at summarizing both the most representative as well as emerging strategies for the synthesis of π-conjugated COFs. We give examples of direct synthesis using large, π-extended building blocks. COFs featuring fully conjugated linkages such as vinylene, pyrazine, and azole are discussed. Then, post-synthetic modification methods that result in the extension of the COF π-system are reviewed. Throughout, mechanistic insights are presented when available. In the context of their utilization as film devices, we conduct a concise survey of the prominent COF layer deposition techniques reported and their aptness for the deposition of fused aromatic systems.
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Affiliation(s)
- Tania Prieto
- CINBIO, Universidade de Vigo, Department of Organic Chemistry, 36310, Vigo, Spain
| | - Clara Ponte
- Nanochemistry Research Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330, Braga, Portugal
- CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Roman Guntermann
- Department of Chemistry and Center for NanoScience (CeNS), Ludwig Maximilians University (LMU), Butenandtstraße 11 (E), 81377, Munich, Germany
| | - Dana D Medina
- Department of Chemistry and Center for NanoScience (CeNS), Ludwig Maximilians University (LMU), Butenandtstraße 11 (E), 81377, Munich, Germany
| | - Laura M Salonen
- CINBIO, Universidade de Vigo, Department of Organic Chemistry, 36310, Vigo, Spain
- Nanochemistry Research Group, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330, Braga, Portugal
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5
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Zhu Y, Zhang S, Qiu X, Hao Q, Wu Y, Luo Z, Guo Y. Graphdiyne/metal oxide hybrid materials for efficient energy and environmental catalysis. Chem Sci 2024; 15:5061-5081. [PMID: 38577352 PMCID: PMC10988606 DOI: 10.1039/d4sc00036f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/22/2024] [Indexed: 04/06/2024] Open
Abstract
Graphdiyne (GDY)-based materials, owing to their unique structure and tunable electronic properties, exhibit great potential in the fields of catalysis, energy, environmental science, and beyond. In particular, GDY/metal oxide hybrid materials (GDY/MOs) have attracted extensive attention in energy and environmental catalysis. The interaction between GDY and metal oxides can increase the number of intrinsic active sites, facilitate charge transfer, and regulate the adsorption and desorption of intermediate species. In this review, we summarize the structure, synthesis, advanced characterization, small molecule activation mechanism and applications of GDY/MOs in energy conversion and environmental remediation. The intrinsic structure-activity relationship and corresponding reaction mechanism are highlighted. In particular, the activation mechanisms of reactant molecules (H2O, O2, N2, etc.) on GDY/MOs are systemically discussed. Finally, we outline some new perspectives of opportunities and challenges in developing GDY/MOs for efficient energy and environmental catalysis.
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Affiliation(s)
- Yuhua Zhu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
- School of Civil Engineering, Wuhan University Wuhan 430072 China
| | - Shuhong Zhang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
| | - Xiaofeng Qiu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
| | - Quanguo Hao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
| | - Yan Wu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
| | - Zhu Luo
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
- Wuhan Institute of Photochemistry and Technology 7 North Bingang Road Wuhan Hubei 430082 China
| | - Yanbing Guo
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University Wuhan Hubei 430082 China
- Wuhan Institute of Photochemistry and Technology 7 North Bingang Road Wuhan Hubei 430082 China
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6
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Puthukkudi A, Nath S, Shee P, Dutta A, Rajput CV, Bommakanti S, Mohapatra J, Samal M, Anwar S, Pal S, Biswal BP. Terahertz Conductivity of Free-Standing 3D Covalent Organic Framework Membranes Fabricated via Triple-Layer-Dual Interfacial Approach. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312960. [PMID: 38146892 DOI: 10.1002/adma.202312960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Indexed: 12/27/2023]
Abstract
Processable covalent organic framework membranes (COFM) are emerging as potential semiconducting materials for device applications. Nevertheless, the fabrication of crystalline and free-standing 3D COFMs is challenging. In this work, a unique time and solvent-efficient triple-layer-dual interfacial (TLDI) approach for the simultaneous synthesis of two 3D COFMs from a single system is developed. Besides, for the first time, the optical conductivity of these free-standing 3D COFMs is analyzed using terahertz (THz) spectroscopy in transmission mode. Interestingly, these membranes show excellent transmittance at THz frequencies with very high intrinsic THz conductivities. The evaluated scattering time and plasma frequency of the free carriers of the COFMs are highly promising for future applications in optoelectronic devices in THz frequencies.
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Affiliation(s)
- Adithyan Puthukkudi
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Satyapriya Nath
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Payel Shee
- School of Physical Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Arpita Dutta
- School of Physical Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Chetan V Rajput
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
| | - Suresh Bommakanti
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
| | - Jeebanjyoti Mohapatra
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Mahalaxmi Samal
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
| | - Sharmistha Anwar
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India
| | - Shovon Pal
- School of Physical Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
| | - Bishnu P Biswal
- School of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar Jatni, Khurda, Odisha, 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
- Centre for Interdisciplinary Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
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7
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Fu GE, Yang H, Zhao W, Samorì P, Zhang T. 2D Conjugated Polymer Thin Films for Organic Electronics: Opportunities and Challenges. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2311541. [PMID: 38551322 DOI: 10.1002/adma.202311541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/07/2024] [Indexed: 04/06/2024]
Abstract
2D conjugated polymers (2DCPs) possess extended in-plane π-conjugated lattice and out-of-plane π-π stacking, which results in enhanced electronic performance and potentially unique band structures. These properties, along with predesignability, well-defined channels, easy postmodification, and order structure attract extensive attention from material science to organic electronics. In this review, the recent advance in the interfacial synthesis and conductivity tuning strategies of 2DCP thin films, as well as their application in organic electronics is summarized. Furthermore, it is shown that, by combining topology structure design and targeted conductivity adjustment, researchers have fabricated 2DCP thin films with predesigned active groups, highly ordered structures, and enhanced conductivity. These films exhibit great potential for various thin-film organic electronics, such as organic transistors, memristors, electrochromism, chemiresistors, and photodetectors. Finally, the future research directions and perspectives of 2DCPs are discussed in terms of the interfacial synthetic design and structure engineering for the fabrication of fully conjugated 2DCP thin films, as well as the functional manipulation of conductivity to advance their applications in future organic electronics.
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Affiliation(s)
- Guang-En Fu
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Haoyong Yang
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Wenkai Zhao
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Paolo Samorì
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, Strasbourg, 67000, France
| | - Tao Zhang
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
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8
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Pradhan I, Mahapatra A, Samal PP, Mishra P, Kumar P, Nayak A. Liquid-Liquid Interface-Assisted Self-Assembly of Ag-Doped ZnO Nanosheets for Atomic Switch Application. J Phys Chem Lett 2024; 15:165-172. [PMID: 38150295 DOI: 10.1021/acs.jpclett.3c02791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Developing facile and inexpensive methods for obtaining large-area two-dimensional semiconducting nanosheets is highly desirable for mass-scale device application. Here, we report a method for producing uniform and large-area films of a Ag-doped ZnO (AZO) nanosheet network via self-assembly at the hexane-water interface by controlling the solute/solvent ratio. The self-assembled film comprises of uniformly tiled nanosheets with size ∼1 μm and thicknesses∼60-100 nm. Using these films in a Pt/AZO/Ag structure, an atomic switch operation is realized. The switching mechanism is found to be governed by electrochemical metallization with nucleation as the rate-limiting step. Our results establish the protocol for large-scale device applications of AZO nanosheets for exploring advanced atomic switch-based neuromorphic systems.
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Affiliation(s)
- Itishree Pradhan
- Department of Physics, Indian Institute of Technology Patna, Patna 801106, India
| | - Anwesha Mahapatra
- Department of Physics, Indian Institute of Technology Patna, Patna 801106, India
| | | | - Puneet Mishra
- Department of Physics, Central University of South Bihar, Gaya 824236, India
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials, University of Newcastle, Callaghan Campus 2308, New South Wales, Australia
| | - Alpana Nayak
- Department of Physics, Indian Institute of Technology Patna, Patna 801106, India
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9
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Jain C, Kushwaha R, Rase D, Shekhar P, Shelke A, Sonwani D, Ajithkumar TG, Vinod CP, Vaidhyanathan R. Tailoring COFs: Transforming Nonconducting 2D Layered COF into a Conducting Quasi-3D Architecture via Interlayer Knitting with Polypyrrole. J Am Chem Soc 2024; 146:487-499. [PMID: 38157305 DOI: 10.1021/jacs.3c09937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Improving the electronic conductivity and the structural robustness of covalent organic frameworks (COFs) is paramount. Here, we covalently cross-link a 2D COF with polypyrrole (Ppy) chains to form a quasi-3D COF. The 3D COF shows well-defined reflections in the SAED patterns distinctly indexed to its modeled crystal structure. This knitting of 2D COF layers with conjugated polypyrrole units improves electronic conductivity from 10-9 to 10-2 S m-1. This conductivity boost is affirmed by the presence of density of states near the Fermi level in the 3D COF, and this elevates the COF's valence band maximum by 0.52 eV with respect to the parent 2D pyrrole-functionalized COF, which agrees well with the opto-electro band gaps. The extent of HOMO elevation suggests the predominant existence of a polaron state (radical cation), giving rise to a strong EPR signal, most likely sourced from the cross-linking polypyrrole chains. A supercapacitor devised with COF20-Ppy records a high areal capacitance of 377.6 mF cm-2, higher than that of the COF loaded with noncovalently linked polypyrrole chains. Thus, the polypyrrole acts as a "conjugation bridge" across the layers, lowering the band gap and providing polarons and additional conduction pathways. This marks a far-reaching approach to converting many 2D COFs into highly ordered and conducting 3D ones.
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Affiliation(s)
| | | | | | | | - Ankita Shelke
- Central NMR Facility and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
| | | | - Thalasseril G Ajithkumar
- Central NMR Facility and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
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10
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Wang R, Lyu H, Poon Ho GSH, Chen H, Yuan Y, Bang KT, Kim Y. Highly Conductive Covalent-Organic Framework Films. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306634. [PMID: 37702138 DOI: 10.1002/smll.202306634] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/31/2023] [Indexed: 09/14/2023]
Abstract
Chemically inert organic networks exhibiting electrical conductivity comparable to metals can advance organic electronics, catalysis, and energy storage systems. Covalent-organic frameworks (COFs) have emerged as promising materials for those applications due to their high crystallinity, porosity, and tunable functionality. However, their low conductivity has limited their practical utilization. In this study, copper-coordinated-fluorinated-phthalocyanine and 2,3,6,7-tetrahydroxy-9,10-anthraquinone-based COF (CuPc-AQ-COF) films with ultrahigh conductivity are developed. The COF films exhibit an electrical conductivity of 1.53 × 103 S m-1 and a Hall mobility of 6.02 × 102 cm2 V-1 s-1 at 298 K, reaching the level of metals. The films are constructed by linking phthalocyanines and anthraquinones through vapor-assisted synthesis. The high conductivity properties of the films are attributed to the molecular design of the CuPc-AQ-COFs and the generation of high-quality crystals via the vapor-assisted method. Density functional theory analysis reveals that an efficient donor-acceptor system between the copper-coordinated phthalocyanines and anthraquinones significantly promotes charge transfer. Overall, the CuPc-AQ-COF films set new records of COF conductivity and mobility and represent a significant step forward in the development of COFs for electronic, catalytic, and electrochemical applications.
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Affiliation(s)
- Rui Wang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
| | - Hang Lyu
- Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
| | - Gerald Siu Hang Poon Ho
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
| | - Huanhuan Chen
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
| | - Yufei Yuan
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
| | - Ki-Taek Bang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
| | - Yoonseob Kim
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, 999077, China
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11
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Liu Q, Li H, Zhang Y, Chen W, Yu S, Chen Y. Porphyrin/phthalocyanine-based porous organic polymers for pollutant removal and detection: Synthesis, mechanisms, and challenges. ENVIRONMENTAL RESEARCH 2023; 239:117406. [PMID: 37839529 DOI: 10.1016/j.envres.2023.117406] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/24/2023] [Accepted: 10/11/2023] [Indexed: 10/17/2023]
Abstract
The growing global concern about environmental threats due to environmental pollution requires the development of environmentally friendly and efficient removal/detection materials and methods. Porphyrin/phthalocyanine (Por/Pc) based porous organic polymers (POPs) as a newly emerging porous material are prepared through polymerizing building blocks with different structures. Benefiting from the high porosity, adjustable pore structure, and enzyme-like activities, the Por/Pc-POPs can be the ideal platform to study the removal and detection of pollutants. However, a systematic summary of their application in environmental treatment is still lacking to date. In this review, the development of various Por/Pc-POPs for pollutant removal and detection applications over the past decade was systematically addressed for the first time to offer valuable guidance on environmental remediation through the utilization of Por/Pc-POPs. This review is divided into two sections (pollutants removal and detection) focusing on Por/Pc-POPs for organic, inorganic, and gaseous pollutants adsorption, photodegradation, and chemosensing, respectively. The related removal and sensing mechanisms are also discussed, and the methods to improve removal and detection efficiency and selectivity are also summarized. For the future practical application of Por/Pc-POPs, this review provides the emerging research directions and their application possibility and challenges in the removal and detection of pollutants.
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Affiliation(s)
- Qi Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Hao Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Yuming Zhang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China
| | - Wenmiao Chen
- Department of Science, Texas A&M University at Qatar, Education City, P.O. Box 23874, Doha, Qatar.
| | - Sirong Yu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China.
| | - Yanli Chen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, Shandong, China.
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12
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Song TT, Huang WQ, Jiang KB, Chen WF, Zhou Y, Bian HY, Wang MS, Guo GC. Significant increase of the photoresponse range and conductivity for a chalcogenide semiconductor by viologen coating through charge transfer. MATERIALS HORIZONS 2023; 10:5677-5683. [PMID: 37791893 DOI: 10.1039/d3mh01241g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Widening the photoresponse range while enhancing the electrical properties of semiconductors could reduce the complexity and cost of photodetectors or increase the power conversion efficiency of solar cells. Surface doping through charge transfer with organic species is one of the most effective and widely used approaches to achieve this aim. It usually features easier preparation over other doping methods but is still limited by the low physicochemical stability and high cost of the used organic species or low improvement of electrical properties. This work shows unprecedented surface doping of semiconductors with highly stable, easily obtained, and strong electron-accepting viologen components, realizing the significant improvement of both the photoresponse range and conductivity. Coating the chalcogenide semiconductor KGaS2 with dimethyl viologen dichloride (MV) yields a charge-transfer complex (CTC) on the surface, which broadens the photoresponse range by nearly 300 nm and improves the conductivity by 5 orders of magnitude. The latter value surpasses all records obtained by surface doping through charge transfer with organic species.
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Affiliation(s)
- Tian-Tian Song
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Wei-Qiang Huang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Kai-Bin Jiang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Wen-Fa Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Yu Zhou
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Hong-Yi Bian
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Ming-Sheng Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
| | - Guo-Cong Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350608, P. R. China.
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13
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Feng B, Chen X, Yan P, Huang S, Lu C, Ji H, Zhu J, Yang Z, Cao K, Zhuang X. Isomeric Dual-Pore Two-Dimensional Covalent Organic Frameworks. J Am Chem Soc 2023. [PMID: 37968832 DOI: 10.1021/jacs.3c09559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Two-dimensional (2D) covalent organic frameworks (COFs) with hierarchical porosity have been increasingly recognized as promising materials in various fields. Besides, the 2D COFs with kagome (kgm) topology can exhibit unique optoelectronic features and have extensive applications. However, rational synthesis of the COFs with kgm topology remains challenging because of competition with a square-lattice topology. Herein, we report two isomeric dual-pore 2D COFs with kgm topology using a novel geometric strategy to reduce the symmetry of their building blocks, which are four-armed naphthalene-based and azulene-based isomeric monomers. Owing to the large dipole moment of azulene, as-prepared azulene-based COF (COF-Az) possesses a considerably narrow band gap of down to 1.37 eV, which is much narrower than the naphthalene-based 2D COF (COF-Nap: 2.28 eV) and is the lowest band gap among reported imine-linked dual-pore 2D COFs. Moreover, COF-Az was used as electrode material in a gas sensor and exhibits high selectivity for NO2, including a high response rate (58.7%) to NO2 (10 ppm), fast recovery (72 s), up to 10 weeks of stability, and resistance to 80% relative humidity, which are superior to those of reported COF-based NO2 gas sensors. The calculation and in situ experimental results indicate that the large dipole moment of azulene boosts the sensitivity of the imine linkages. The usage of isomeric building blocks not only enables the synthesis of 2D COFs with isometric kgm topology but also provides an azulene-based 2D platform for studying the structure-property correlations of COFs.
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Affiliation(s)
- Boxu Feng
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiyu Chen
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Pu Yan
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
| | - Senhe Huang
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Chenbao Lu
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huiping Ji
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinhui Zhu
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhi Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Kecheng Cao
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
| | - Xiaodong Zhuang
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Frontiers Science Center for Transformative Molecules, Zhang Jiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 201203, China
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14
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Zhang Y, Zhang X, Jiao L, Meng Z, Jiang HL. Conductive Covalent Organic Frameworks of Polymetallophthalocyanines as a Tunable Platform for Electrocatalysis. J Am Chem Soc 2023; 145:24230-24239. [PMID: 37890005 DOI: 10.1021/jacs.3c08594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Abstract
Developing an electrocatalyst platform that can control the interplay among activity, selectivity, and stability at atomic precision remains a grand challenge. Here, we have synthesized highly crystalline polymetallophthalocyanines (pMPcs, M = Fe, Co, Ni, and Cu) through the annulation of tetracyanobenzene in the presence of transition metals. The conjugated, conductive, and stable backbones with precisely installed metal sites render pMPcs a unique platform in electrochemical catalysis, where tunability emerges from long-range interactions. The construction of pCoNiPc with a Co and Ni dual-site integrates the advantageous features of pCoPc and pNiPc in electrocatalytic CO2 reduction through electronic communication of the dual-site with an unprecedented long atomic separation of ≥14 chemical bonds. This integration provides excellent activity (current density, j = -16.0 and -100 mA cm-2 in H-type and flow cell, respectively), selectivity (CO Faraday efficiency, FECO = 94%), and stability (>10 h), making it one of the best-performing reticular materials.
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Affiliation(s)
- Yi Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Xiyuan Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Long Jiao
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230031, People's Republic of China
| | - Zheng Meng
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Hai-Long Jiang
- Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230031, People's Republic of China
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15
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Ding G, Zhao J, Zhou K, Zheng Q, Han ST, Peng X, Zhou Y. Porous crystalline materials for memories and neuromorphic computing systems. Chem Soc Rev 2023; 52:7071-7136. [PMID: 37755573 DOI: 10.1039/d3cs00259d] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Porous crystalline materials usually include metal-organic frameworks (MOFs), covalent organic frameworks (COFs), hydrogen-bonded organic frameworks (HOFs) and zeolites, which exhibit exceptional porosity and structural/composition designability, promoting the increasing attention in memory and neuromorphic computing systems in the last decade. From both the perspective of materials and devices, it is crucial to provide a comprehensive and timely summary of the applications of porous crystalline materials in memory and neuromorphic computing systems to guide future research endeavors. Moreover, the utilization of porous crystalline materials in electronics necessitates a shift from powder synthesis to high-quality film preparation to ensure high device performance. This review highlights the strategies for preparing porous crystalline materials films and discusses their advancements in memory and neuromorphic electronics. It also provides a detailed comparative analysis and presents the existing challenges and future research directions, which can attract the experts from various fields (e.g., materials scientists, chemists, and engineers) with the aim of promoting the applications of porous crystalline materials in memory and neuromorphic computing systems.
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Affiliation(s)
- Guanglong Ding
- Institute for Advanced Study, Shenzhen University, Shenzhen, China.
| | - JiYu Zhao
- Institute for Advanced Study, Shenzhen University, Shenzhen, China.
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
- State Key Laboratory of Fine Chemicals, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Kui Zhou
- Institute for Advanced Study, Shenzhen University, Shenzhen, China.
| | - Qi Zheng
- Institute for Advanced Study, Shenzhen University, Shenzhen, China.
| | - Su-Ting Han
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
- State Key Laboratory of Fine Chemicals, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Ye Zhou
- Institute for Advanced Study, Shenzhen University, Shenzhen, China.
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16
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Rejali NA, Dinari M, Wang Y. Post-synthetic modifications of covalent organic frameworks (COFs) for diverse applications. Chem Commun (Camb) 2023; 59:11631-11647. [PMID: 37702105 DOI: 10.1039/d3cc03091a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Covalent organic frameworks (COFs) are porous and crystalline organic polymers, which have found usage in various fields. These frameworks are tailorable through the introduction of diverse functionalities into the platform. Indeed, functionality plays a key role in their different applications. However, sometimes functional groups are not compatible with reaction conditions or can compete and interfere with other groups of monomers in the direct synthetic method. Also, pre-synthesis of bulky moieties in COFs can negatively affect crystal formation. To avoid these problems a post-synthetic modification (PSM) approach is a helpful tactic. Also, with the assistance of this strategy porous size can be tunable and stability can be improved without considerable effect on the crystallite. In addition, conductivity, hydrophobicity/ hydrophilicity, and chirality are among the features that can be reformed with this method. In this review, different types of PSM strategies based on recent articles have been divided into four categories: (i) post-functionalization, (ii) post-metalation, (iii) chemical locking, and (iv) host-guest post-modifications. Post-functionalization and chemical locking methods are based on covalent bond formation while in post-metalation and host-guest post-modifications, non-covalent bonds are formed. Also, the potential of these post-modified COFs in energy storage and conversion (lithium-sulfur batteries, hydrogen storage, proton-exchange membrane fuel cells, and water splitting), heterogeneous catalysts, food safety evaluation, gas separation, environmental domains (greenhouse gas capture, radioactive element uptake, and water remediation), and biological applications (drug delivery, biosensors, biomarker capture, chiral column chromatography, and solid-state smart nanochannels) have been discussed.
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Affiliation(s)
| | - Mohammad Dinari
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Yong Wang
- School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China.
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17
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Jiang QQ, Li YJ, Wu Q, Liang RP, Wang X, Zhang R, Wang YA, Liu X, Qiu JD. Molecular Insertion: A Master Key to Unlock Smart Photoelectric Responses of Covalent Organic Frameworks. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302254. [PMID: 37236205 DOI: 10.1002/smll.202302254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/07/2023] [Indexed: 05/28/2023]
Abstract
Covalent organic frameworks (COFs) show potentials in prominent photoelectric responses by judicious structural design. However, from the selections of monomers and condensation reactions to the synthesis procedures, the acquisition of photoelectric COFs has to meet overmuch high conditions, limiting the breakthrough and modulation in photoelectric responses. Herein, the study reports a creative "lock-key model" based on molecular insertion strategy. A COF with suitable cavity size, TP-TBDA, is used as the host to load guests. Merely through the volatilization of mixed solution, TP-TBDA and guests can be spontaneously assembled via non-covalent interactions (NCIs) to produce molecular-inserted COFs (MI-COFs). The NCIs between TP-TBDA and guests acted as a bridge to facilitate charge transfer in MI-COFs, unlocking the photoelectric responses of TP-TBDA. By exploiting the controllability of NCIs, the MI-COFs can realize the smart modulation of photoelectric responses by simply changing the guest molecule, thus avoiding the arduous selection of monomers and condensation reactions required by conventional COFs. The construction of molecular-inserted COFs circumvents complicated procedures for achieving performance improvement and modulation, providing a promising direction to construct late-model photoelectric responsive materials.
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Affiliation(s)
- Qiao-Qiao Jiang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Ya-Jie Li
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Qiong Wu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Ru-Ping Liang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Xun Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Rui Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Ying-Ao Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Xin Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Jian-Ding Qiu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology (ECUT), Nanchang, 330013, China
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18
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Wan Y, Sun P, Shi L, Yan X, Zhang X. Three-Dimensional Fully Conjugated Covalent Organic Frameworks for Efficient Photocatalytic Water Splitting. J Phys Chem Lett 2023; 14:7411-7420. [PMID: 37578869 DOI: 10.1021/acs.jpclett.3c01850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Covalent organic frameworks (COFs) are promising photocatalysts for water splitting, but their efficiency lags behind that of inorganic counterparts partly due to the limited charge transport and optical absorption properties. To overcome this limitation, we proposed to employ three-dimensional (3D) fully conjugated (FC) COFs with a topological assembly of cyclooctatetraene derivatives for photocatalytic water splitting. On the basis of first-principles calculations, we demonstrated that these 3D FC-COFs are semiconductors with exceptional charge transport and optical absorption properties. The carrier mobilities are comparable to those of inorganic semiconductors and superior to the record mobility observed in two-dimensional COFs. Additionally, the 3D FC-COFs exhibit broad visible light absorption with direct band gaps and high optical absorption coefficients. Among them, two 3D FC-COFs are identified for overall water splitting, while three others can facilitate the hydrogen evolution half-reaction. This study pioneers the design of 3D FC-COF photocatalysts, potentially advancing their applications in photocatalysis and optoelectronics.
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Affiliation(s)
- Yangyang Wan
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Pengting Sun
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Lebin Shi
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiaohong Yan
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xu Zhang
- Department of Physics and Astronomy, California State University Northridge, Northridge, California 91330-8268, United States
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19
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Wang D, Yu H, Shi W, Xu C. Chemical Doping of Organic and Coordination Polymers for Thermoelectric and Spintronic Applications: A Theoretical Understanding. Acc Chem Res 2023; 56:2127-2138. [PMID: 37432731 DOI: 10.1021/acs.accounts.3c00091] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
ConspectusThe controlled doping of organic semiconductors (OSCs) is crucial not only for improving the performance of electronic and optoelectronic devices but also for enabling efficient thermoelectric conversion and spintronic applications. The mechanism of doping for OSCs is fundamentally different from that of their inorganic counterparts. In particular, the interplay between dopants and host materials is complicated considering the low dielectric constant, strong lattice-charge interaction, and flexible nature of materials. Recent experimental breakthroughs in the molecular design of dopants and the precise doping with high spatial resolution call for more profound understandings as to how the dopant interacts with the charge introduced to OSCs and how the admixture of dopants alters the electronic properties of host materials before one can exploit controllable doping to realize desired functionalities.By employing state-of-the-art computational tools, we revealed the effects of doping in representative and emerging organic and coordination polymers aiming toward thermoelectric and spintronic applications. We showed that dopants and hosts should be taken as an integrated system, and the type of charge-transfer interaction between them is the key for spin polarization. First, we found doping-induced modifications to the electronic band in a potassium-doped coordination polymer, an n-type thermoelectric material. The charge localization due to the Coulomb interaction between the completely ionized dopant and the injected charge on the polymer backbone and also the polaron band formation at low doping levels are responsible for the nonmonotonic temperature dependence of the conductivity and Seebeck coefficient observed in recent experiments. The mechanistic insights gained from these results have provided important guidelines on how to control the doping level and working temperature to achieve a high thermoelectric conversion efficiency. Next, we demonstrated that the ionized dopants scatter charge carriers via screened Coulomb interactions, and it may become a dominant scattering mechanism in doped polymers. After incorporating the ionized dopant scattering mechanism in PEDOT:Tos, a p-type thermoelectric polymer, we were able to reproduce the measured Seebeck coefficient-electrical conductivity relationship spanning a wide range of doping levels, highlighting the importance of ionized dopant scattering in charge transport.In the two cases described above, charge injection is enabled by integral charge transfer between the dopant and host polymers. In a third example, we showed that a novel type of stacked two-dimensional polymer, conjugated covalent organic frameworks (COFs) with closed-shell electronic structures, can be spin polarized by iodine doping via fractional charge transfer even at high doping levels. We then manifested that magnetization can be attained in nonmagnetic materials lacking metal d electrons and further designed two new COFs with tunable spintronic structure and magnetic interactions after the iodine doping. These findings have suggested a practical route to enable spin polarization in nonradical materials by chemical doping via orbital hybridization, which holds great promise for flexible spintronic applications.
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Affiliation(s)
- Dong Wang
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
- MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Hongde Yu
- Faculty of Chemistry and Food Chemistry, TU Dresden, 01069 Dresden, Germany
| | - Wen Shi
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Chunlin Xu
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
- MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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20
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Shan Z, Wu M, Liu T, Wang J, Chen C, Li S, Su J, Zhang G. Adjusting the Stacking Model of Two-Dimensional Covalent Organic Frameworks for Volatile Acid Sensing via Spatial Effects. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37433068 DOI: 10.1021/acsami.3c05702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Covalent organic frameworks (COFs) are polymer networks with a precise structure and permanent porosity, making them an attractive platform for the detection of volatile analytes due to their chemical stability and accessible active sites. In this study, based on electron-rich N,N,N',N'-tetrakis(4-aminophenyl)-1,4-benzenediamine moiety, two 2D COFs with different topological structures and stacking models were designed by the strategy of spatial effect. The conductivity of the AB-stacked COF-NUST-20 was an order of magnitude higher than that of the AA-stacked COF-NUST-30. With the protonation of the imine bond, both COFs exhibited a strong, rapid, and reversible visible color change in response to corrosive HCl vapor. In addition, the AB-stacked COF-NUST-20, which facilitates both interlayer and intralayer charge transfer, shows better sensing performance. These findings demonstrate the usefulness of all-aromatic 2D COFs as real-time responsive chemosensors and provide insight into the design of sensing materials with high sensitivity.
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Affiliation(s)
- Zhen Shan
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - Miaomiao Wu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Tongtong Liu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Jinjian Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Congjie Chen
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Shufan Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Jian Su
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Gen Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
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21
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Wang M, Fu S, Petkov P, Fu Y, Zhang Z, Liu Y, Ma J, Chen G, Gali SM, Gao L, Lu Y, Paasch S, Zhong H, Steinrück HP, Cánovas E, Brunner E, Beljonne D, Bonn M, Wang HI, Dong R, Feng X. Exceptionally high charge mobility in phthalocyanine-based poly(benzimidazobenzophenanthroline)-ladder-type two-dimensional conjugated polymers. NATURE MATERIALS 2023; 22:880-887. [PMID: 37337069 PMCID: PMC10313522 DOI: 10.1038/s41563-023-01581-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 05/17/2023] [Indexed: 06/21/2023]
Abstract
Two-dimensional conjugated polymers (2DCPs), composed of multiple strands of linear conjugated polymers with extended in-plane π-conjugation, are emerging crystalline semiconducting polymers for organic (opto)electronics. They are represented by two-dimensional π-conjugated covalent organic frameworks, which typically suffer from poor π-conjugation and thus low charge carrier mobilities. Here we overcome this limitation by demonstrating two semiconducting phthalocyanine-based poly(benzimidazobenzophenanthroline)-ladder-type 2DCPs (2DCP-MPc, with M = Cu or Ni), which are constructed from octaaminophthalocyaninato metal(II) and naphthalenetetracarboxylic dianhydride by polycondensation under solvothermal conditions. The 2DCP-MPcs exhibit optical bandgaps of ~1.3 eV with highly delocalized π-electrons. Density functional theory calculations unveil strongly dispersive energy bands with small electron-hole reduced effective masses of ~0.15m0 for the layer-stacked 2DCP-MPcs. Terahertz spectroscopy reveals the band transport of Drude-type free carriers in 2DCP-MPcs with exceptionally high sum mobility of electrons and holes of ~970 cm2 V-1 s-1 at room temperature, surpassing that of the reported linear conjugated polymers and 2DCPs. This work highlights the critical role of effective conjugation in enhancing the charge transport properties of 2DCPs and the great potential of high-mobility 2DCPs for future (opto)electronics.
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Affiliation(s)
- Mingchao Wang
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
| | - Shuai Fu
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Petko Petkov
- Faculty of Chemistry and Pharmacy, University of Sofia, Sofia, Bulgaria
| | - Yubin Fu
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Microstructure Physics, Halle, Germany
| | - Zhitao Zhang
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Yannan Liu
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Microstructure Physics, Halle, Germany
| | - Ji Ma
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Microstructure Physics, Halle, Germany
| | - Guangbo Chen
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
| | - Sai Manoj Gali
- Laboratory for Chemistry of Novel Materials, University of Mons, Mons, Belgium
| | - Lei Gao
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Yang Lu
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Microstructure Physics, Halle, Germany
| | - Silvia Paasch
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
| | - Haixia Zhong
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
| | - Hans-Peter Steinrück
- Institute of Physical Chemistry II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Enrique Cánovas
- Max Planck Institute for Polymer Research, Mainz, Germany
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
| | - Eike Brunner
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons, Mons, Belgium
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Mainz, Germany.
| | - Renhao Dong
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany.
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China.
| | - Xinliang Feng
- Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany.
- Max Planck Institute of Microstructure Physics, Halle, Germany.
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22
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Ren G, Cai F, Wang S, Luo Z, Yuan Z. Iodine doping induced activation of covalent organic framework cathodes for Li-ion batteries. RSC Adv 2023; 13:18983-18990. [PMID: 37362603 PMCID: PMC10286563 DOI: 10.1039/d3ra01414b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023] Open
Abstract
Covalent organic frameworks (COFs) are considered as promising candidate organic electrode materials for lithium-ion batteries (LIBs) because of their relatively high capacity, ordered nanopores, and limited solubility in electrolyte. However, the practical capacity of COF materials is mainly affected by their low electronic/ionic conductivity and the deep-buried active sites inside the COFs. Here, we synthesize an iodine doped β-ketoenamine-linked COF (2,6-diaminoanthraquinone and 1,3,5-triformylphloroglucinol, denoted as COF-I) by a facile one-pot solvothermal reaction. The introduction of iodine can make the COF more lithiophilic inside and exhibit high intrinsic ion/electron transport, ensuring more accessible active sites of the COFs. Consequently, when used as the cathode of LIBs, COF-I demonstrates a high initial discharge capacity of 140 mA h g-1 at 0.2 A g-1, and excellent cycling stability with 92% capacity retention after 1000 cycles. Furthermore, a reversible capacity of 95 mA h g-1 at 1.0 A g-1 is also achieved after 300 cycles. Our study provides a facile way to develop high-performance COF electrode materials for LIB applications.
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Affiliation(s)
- Guoying Ren
- Tianjin Key Lab for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology Tianjin 300384 China
| | - Fengshi Cai
- Tianjin Key Lab for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology Tianjin 300384 China
| | - Shoucheng Wang
- Tianjin Key Lab for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology Tianjin 300384 China
| | - Zhiqiang Luo
- Key Laboratory of Display Materials and Photoelectric Devices (Tianjin University of Technology), Ministry of Education of China Tianjin 300384 China
| | - Zhihao Yuan
- National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology Tianjin 300384 China
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23
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Zhou G, Yang T, Huang Z. Structure determination of a low-crystallinity covalent organic framework by three-dimensional electron diffraction. Commun Chem 2023; 6:116. [PMID: 37286771 DOI: 10.1038/s42004-023-00915-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 05/30/2023] [Indexed: 06/09/2023] Open
Abstract
Covalent organic frameworks (COFs) have been attracting intense research due to their permanent porosity, designable architecture, and high stability. However, COFs are challenging to crystallize and their synthesis often results in tiny crystal sizes and low crystallinities, which hinders an unambiguous structure determination. Herein, we demonstrate that the structure of low-crystallinity COF Py-1P nanocrystals can be solved by coupling three-dimensional electron diffraction (3DED) with simulated annealing (SA). The resulting model is comparable to that obtained from high-crystallinity samples by dual-space method. Moreover, for low-resolution 3DED data, the model obtained by SA shows a better framework than those provided by classic direct method, dual-space method, and charge flipping. We further simulate data with different resolutions to understand the reliability of SA under different crystal quality conditions. The successful determination of Py-1P structure by SA compared to other methods provides new knowledge for using 3DED to analyze low-crystallinity and nanosized materials.
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Affiliation(s)
- Guojun Zhou
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-106 91, Sweden
| | - Taimin Yang
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-106 91, Sweden
| | - Zhehao Huang
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-106 91, Sweden.
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24
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Burke DW, Dasari RR, Sangwan VK, Oanta AK, Hirani Z, Pelkowski CE, Tang Y, Li R, Ralph DC, Hersam MC, Barlow S, Marder SR, Dichtel WR. Synthesis, Hole Doping, and Electrical Properties of a Semiconducting Azatriangulene-Based Covalent Organic Framework. J Am Chem Soc 2023. [PMID: 37216443 DOI: 10.1021/jacs.2c12371] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two-dimensional covalent organic frameworks (2D COFs) containing heterotriangulenes have been theoretically identified as semiconductors with tunable, Dirac-cone-like band structures, which are expected to afford high charge-carrier mobilities ideal for next-generation flexible electronics. However, few bulk syntheses of these materials have been reported, and existing synthetic methods provide limited control of network purity and morphology. Here, we report transimination reactions between benzophenone-imine-protected azatriangulenes (OTPA) and benzodithiophene dialdehydes (BDT), which afforded a new semiconducting COF network, OTPA-BDT. The COFs were prepared as both polycrystalline powders and thin films with controlled crystallite orientation. The azatriangulene nodes are readily oxidized to stable radical cations upon exposure to an appropriate p-type dopant, tris(4-bromophenyl)ammoniumyl hexachloroantimonate, after which the network's crystallinity and orientation are maintained. Oriented, hole-doped OTPA-BDT COF films exhibit electrical conductivities of up to 1.2 × 10-1 S cm-1, which are among the highest reported for imine-linked 2D COFs to date.
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Affiliation(s)
- David W Burke
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Raghunath R Dasari
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Vinod K Sangwan
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Alexander K Oanta
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Zoheb Hirani
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Chloe E Pelkowski
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yongjian Tang
- Department of Physics, Cornell University, Ithaca, New York 14853, United States
| | - Ruofan Li
- Department of Physics, Cornell University, Ithaca, New York 14853, United States
| | - Daniel C Ralph
- Department of Physics, Cornell University, Ithaca, New York 14853, United States
| | - Mark C Hersam
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Stephen Barlow
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Renewable & Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Seth R Marder
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Renewable & Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
- Departments of Chemistry and of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - William R Dichtel
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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25
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Chen X, Zeng M, Yang J, Hu N, Duan X, Cai W, Su Y, Yang Z. Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO 2 Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101660. [PMID: 37242076 DOI: 10.3390/nano13101660] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023]
Abstract
Two-dimensional (2D) phthalocyanine-based covalent organic frameworks (COFs) provide an ideal platform for efficient and rapid gas sensing-this can be attributed to their regular structure, moderate conductivity, and a large number of scalable metal active centers. However, there remains a need to explore structural modification strategies for optimizing the sluggish desorption process caused by the extensive porosity and strong adsorption effect of metal sites. Herein, we reported a 2D bimetallic phthalocyanine-based COF (COF-CuNiPc) as chemiresistive gas sensors that exhibited a high gas-sensing performance to nitrogen dioxide (NO2). Bimetallic COF-CuNiPc with an asymmetric synergistic effect achieves a fast adsorption/desorption process to NO2. It is demonstrated that the COF-CuNiPc can detect 50 ppb NO2 with a recovery time of 7 s assisted by ultraviolet illumination. Compared with single-metal phthalocyanine-based COFs (COF-CuPc and COF-NiPc), the bimetallic structure of COF-CuNiPc can provide a proper band gap to interact with NO2 gas molecules. The CuNiPc heterometallic active site expands the overlap of d-orbitals, and the optimized electronic arrangement accelerates the adsorption/desorption processes. The concept of a synergistic effect enabled by bimetallic phthalocyanines in this work can provide an innovative direction to design high-performance chemiresistive gas sensors.
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Affiliation(s)
- Xiyu Chen
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Min Zeng
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jianhua Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Nantao Hu
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoyong Duan
- Zhoushan Field Scientific Observation and Research Station for Marine Geo-Hazards, China Geological Survey, Qingdao 266237, China
| | - Wei Cai
- Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yanjie Su
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhi Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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26
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Emerging tetrapyrrole porous organic polymers for chemosensing applications. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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27
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Yuan Y, Bang KT, Wang R, Kim Y. Macrocycle-Based Covalent Organic Frameworks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210952. [PMID: 36608278 DOI: 10.1002/adma.202210952] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/26/2022] [Indexed: 06/17/2023]
Abstract
Macrocycles with well-defined cavities and the ability to undergo supramolecular interactions are classical materials that have played an essential role in materials science. However, one of the most substantial barriers limiting the utilization of macrocycles is their aggregation, which blocks the active regions. Among many attempted strategies to prevent such aggregation, installing macrocycles into covalent organic frameworks (COFs), which are porous and stable reticular networks, has emerged as an ideal solution. The resulting macrocycle-based COFs (M-COFs) preserve the macrocycles' unique activities, enabling applications in various fields such as single-atom catalysis, adsorption/separation, optoelectronics, phototherapy, and structural design of forming single-layered or mechanically interlocked COFs. The resulting properties are unmatchable by any combination of macrocycles with other substrates, opening a new chapter in advanced materials. This review focuses on the latest progress in the concepts, synthesis, properties, and applications of M-COFs, and presents an in-depth outlook on the challenges and opportunities in this emerging field.
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Affiliation(s)
- Yufei Yuan
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Ki-Taek Bang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Rui Wang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Yoonseob Kim
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
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28
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Yang C, Mao C, Deng Q, Yang Y, Zhou Y, Zhang Y. One-Pot Synthesis of Flavones Catalyzed by an Au-mediated Covalent Organic Framework. J Colloid Interface Sci 2023; 642:283-291. [PMID: 37004262 DOI: 10.1016/j.jcis.2023.03.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 03/31/2023]
Abstract
Covalent organic frameworks (COFs) are excellent candidates for rationally designed metal-coordinated catalysts due to their porous structures and adjustable organic building blocks. In this work, a two-dimensional (2D) COF with novel fxt topology was synthesized. The newly devised COF had been fully characterized by a range of spectroscopic and microscopic techniques. The COF was further metallized by the gold species to form a heterogeneous catalyst that enabled the one-pot synthesis of flavone and its derivatives. The Au@COF catalyst showed high catalytic activity and good recyclability. This work demonstrates the great potential of metallized COFs with unique well-defined pores in organic catalysis.
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29
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Ghosh R, Paesani F. Connecting the dots for fundamental understanding of structure-photophysics-property relationships of COFs, MOFs, and perovskites using a Multiparticle Holstein Formalism. Chem Sci 2023; 14:1040-1064. [PMID: 36756323 PMCID: PMC9891456 DOI: 10.1039/d2sc03793a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 11/09/2022] [Indexed: 11/17/2022] Open
Abstract
Photoactive organic and hybrid organic-inorganic materials such as conjugated polymers, covalent organic frameworks (COFs), metal-organic frameworks (MOFs), and layered perovskites, display intriguing photophysical signatures upon interaction with light. Elucidating structure-photophysics-property relationships across a broad range of functional materials is nontrivial and requires our fundamental understanding of the intricate interplay among excitons (electron-hole pair), polarons (charges), bipolarons, phonons (vibrations), inter-layer stacking interactions, and different forms of structural and conformational defects. In parallel with electronic structure modeling and data-driven science that are actively pursued to successfully accelerate materials discovery, an accurate, computationally inexpensive, and physically-motivated theoretical model, which consistently makes quantitative connections with conceptually complicated experimental observations, is equally important. Within this context, the first part of this perspective highlights a unified theoretical framework in which the electronic coupling as well as the local coupling between the electronic and nuclear degrees of freedom can be efficiently described for a broad range of quasiparticles with similarly structured Holstein-style vibronic Hamiltonians. The second part of this perspective discusses excitonic and polaronic photophysical signatures in polymers, COFs, MOFs, and perovskites, and attempts to bridge the gap between different research fields using a common theoretical construct - the Multiparticle Holstein Formalism. We envision that the synergistic integration of state-of-the-art computational approaches with the Multiparticle Holstein Formalism will help identify and establish new, transformative design strategies that will guide the synthesis and characterization of next-generation energy materials optimized for a broad range of optoelectronic, spintronic, and photonic applications.
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Affiliation(s)
- Raja Ghosh
- Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093 USA
| | - Francesco Paesani
- Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093 USA
- San Diego Supercomputer Center, University of California La Jolla San Diego California 92093 USA
- Materials Science and Engineering, University of California La Jolla San Diego California 92093 USA
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30
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Wu C, Xing Z, Yang S, Li Z, Zhou W. Nanoreactors for photocatalysis. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Merkel K, Greiner J, Ortmann F. Understanding the electronic pi-system of 2D covalent organic frameworks with Wannier functions. Sci Rep 2023; 13:1685. [PMID: 36717636 PMCID: PMC9886956 DOI: 10.1038/s41598-023-28285-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 01/16/2023] [Indexed: 01/31/2023] Open
Abstract
We investigate a family of hexagonal 2D covalent organic frameworks (COFs) with phenyl and biphenyl spacer units and different chemical linker species. Chemical trends are elucidated and attributed to microscopic properties of the [Formula: see text]-electron-system spanned by atomic [Formula: see text]-orbitals. We systematically investigate the electronic structure, delocalization of electronic states, effects of disorder, bond torsion, and doping, and correlate these with variable [Formula: see text]-conjugation and nucleus-independent chemical shift (NICS) aromaticity. Molecular orbitals are obtained from maximally localized Wannier functions that have [Formula: see text]- and [Formula: see text]-character, forming distinct [Formula: see text]- and [Formula: see text]-bands for all valence states. The Wannier-orbital description goes beyond simple tight-binding models and enables a detailed understanding of the electronic topology, effective electronic coupling and delocalization. It is shown that a meaningful comparison between COFs with different chemical elements can only be made by examining the entire [Formula: see text]-electron system, while a comparison of individual bands (e.g., bands near the Fermi energy) can be a insufficient to derive general design rules for linker and spacer monomer selection. We further identify delocalized states that are spread across tens or hundreds of pores of the 2D COFs and analyze their robustness against structural and energetic disorders like out-of-plane rotations of molecular fragments, different strength of energetic disorder and energetic shifts due to chemical doping.
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Affiliation(s)
- Konrad Merkel
- grid.6936.a0000000123222966TUM School of Natural Sciences, Technical University of Munich, Munich, Germany
| | - Johannes Greiner
- grid.6936.a0000000123222966TUM School of Natural Sciences, Technical University of Munich, Munich, Germany
| | - Frank Ortmann
- grid.6936.a0000000123222966TUM School of Natural Sciences, Technical University of Munich, Munich, Germany
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32
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Shang S, Du C, Liu Y, Liu M, Wang X, Gao W, Zou Y, Dong J, Liu Y, Chen J. A one-dimensional conductive metal-organic framework with extended π-d conjugated nanoribbon layers. Nat Commun 2022; 13:7599. [PMID: 36494377 PMCID: PMC9734122 DOI: 10.1038/s41467-022-35315-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 11/25/2022] [Indexed: 12/13/2022] Open
Abstract
Conductive metal-organic frameworks (MOFs) have performed well in the fields of energy and catalysis, among which two-dimensional (2D) and three-dimensional (3D) MOFs are well-known. Here, we have synthesized a one-dimensional (1D) conductive metal-organic framework (MOF) in which hexacoordinated 1,5-Diamino-4,8-dihydroxy-9,10-anthraceneedione (DDA) ligands are connected by double Cu ions, resulting in nanoribbon layers with 1D π-d conjugated nanoribbon plane and out-of-plane π-π stacking, which facilitates charge transport along two dimensions. The DDA-Cu as a highly conductive n-type MOF has high crystalline quality with a conductivity of ~ 9.4 S·m-1, which is at least two orders of magnitude higher than that of conventional 1D MOFs. Its electrical band gap (Eg) and exciton binding energy (Eb) are approximately 0.49 eV and 0.3 eV, respectively. When utilized as electrode material in a supercapacitor, the DDA-Cu exhibits good charge storage capacity and cycle stability. Meanwhile, as thse active semiconductor layer, it successfully simulates the artificial visual perception system with excellent bending resistance and air stability as a MOF-based flexible optoelectronic synaptic case. The controllable preparation of high-quality 1D DDA-Cu MOF may enable new architectural designs and various applications in the future.
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Affiliation(s)
- Shengcong Shang
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Changsheng Du
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Youxing Liu
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Minghui Liu
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Xinyu Wang
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Wenqiang Gao
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Ye Zou
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Jichen Dong
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Yunqi Liu
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Jianyi Chen
- grid.9227.e0000000119573309Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, P. R. China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
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33
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Zhao X, Pang H, Huang D, Liu G, Hu J, Xiang Y. Construction of Ultrastable Nonsubstituted Quinoline‐Bridged Covalent Organic Frameworks via Rhodium‐Catalyzed Dehydrogenative Annulation. Angew Chem Int Ed Engl 2022; 61:e202208833. [DOI: 10.1002/anie.202208833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaodong Zhao
- Department of Chemistry, College of Science Huazhong Agricultural University Wuhan Hubei 430070 China
| | - Huaji Pang
- Department of Chemistry, College of Science Huazhong Agricultural University Wuhan Hubei 430070 China
| | - Dekang Huang
- Department of Chemistry, College of Science Huazhong Agricultural University Wuhan Hubei 430070 China
| | - Gang Liu
- Department of Chemistry, College of Science Huazhong Agricultural University Wuhan Hubei 430070 China
| | - Jianxiang Hu
- Department of Chemistry, College of Science Huazhong Agricultural University Wuhan Hubei 430070 China
| | - Yonggang Xiang
- Department of Chemistry, College of Science Huazhong Agricultural University Wuhan Hubei 430070 China
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34
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Semiconducting ladder-type covalent organic frameworks. Chem 2022. [DOI: 10.1016/j.chempr.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Xu X, Cai P, Chen H, Zhou HC, Huang N. Three-Dimensional Covalent Organic Frameworks with she Topology. J Am Chem Soc 2022; 144:18511-18517. [PMID: 36170014 DOI: 10.1021/jacs.2c07733] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Reticular chemistry allows the control of crystalline frameworks at atomic precision according to the predesigned topological structures. However, only a limited number of topological structures of three-dimensional (3D) covalent organic frameworks (COFs) have been established. In this work, we developed a series of 3D COFs with an unprecedented she topology, which were constructed with D3d- and D4h-symmetric building blocks. The resulting COFs crystallize in a space group of Im3̅m, in which each D3d unit connects with six D4h units to form a noninterpenetrated network with a uniform pore size of 2.0 nm. In addition, these COFs exhibited high crystallinity, excellent porosity, and good chemical and thermal stability. The crystalline structures, composition, and physicochemical properties of these networks were unambiguously characterized. Notably, the inbuilt porphyrin units render these COFs as efficient catalysts for photoredox C-C bond forming and photocatalytic carbon dioxide reduction reactions. Thus, this work constitutes a new approach for the construction of 3D she-net COFs and also enhances the structural diversity and complexity of COFs.
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Affiliation(s)
- Xiaoyi Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Peiyu Cai
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Hongzheng Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hong-Cai Zhou
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Ning Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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36
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Li X, Liu Q, Yang B, Liao Z, Yan W, Xiang Z. An Initial Covalent Organic Polymer with Closed-F Edges Directly for Proton-Exchange-Membrane Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2204570. [PMID: 35863906 DOI: 10.1002/adma.202204570] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Covalent organic polymers (COPs) are a class of rising electrocatalysts for the oxygen reduction reaction (ORR) due to the atomically metrical control of the organic molecular components along with highly architectural robustness and thermodynamic stability even in acid or alkaline media. However, the direct application of pristine COPs as acidic ORR electrocatalysts, especially in device manner, e.g., in proton-exchange-membrane fuel cells (PEMFCs), remains a big challenge. Currently, the decoration toward electronic structures of active sites is considered a vital pathway to enhancing the acidic ORR activity of carbon-based electrocatalysts. Here, an initial F-decorated fully closed π-conjugated quasi-phthalocyanine COP (denoted as COPBTC -F) is reported. The introduction of the closed-F edges stepwise drags more electrons from FeN4 sites in COPBTC -F into the catalyst margin, which weakens the occupied numbers of bonding orbitals between COPBTC -F and OH* intermediates at the rate-determining step, exhibiting over five times intrinsic performance beyond the counterpart without F functionalities (termed as COPBTC ). Significantly, the maximum power density utilizing COPBTC -F as a cathode catalyst in PEMFCs is remarkably increased by an order of magnitude compared with COPBTC , which is a stride forward among catalysts based on a pyrolysis-free conjugated-polymer network in device manner to date.
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Affiliation(s)
- Xueli Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Qingbin Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Bolong Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zhijian Liao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
- College of Marine Science and Technology, Hainan Tropical Ocean University, Sanya, 572022, P. R. China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, P. R. China
| | - Zhonghua Xiang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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37
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Zhao X, Pang H, Huang D, Liu G, Hu J, Xiang Y. Construction of Ultrastable Nonsubstituted Quinoline‐Bridged Covalent Organic Frameworks via Rhodium‐Catalyzed Dehydrogenative Annulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaodong Zhao
- Huazhong Agriculture University: Huazhong Agricultural University College of Science CHINA
| | - Huaji Pang
- Huazhong Agriculture University: Huazhong Agricultural University College of Science CHINA
| | - Dekang Huang
- Huazhong Agriculture University: Huazhong Agricultural University College of Science CHINA
| | - Gang Liu
- Huazhong Agriculture University: Huazhong Agricultural University College of Science CHINA
| | - Jianxiang Hu
- Huazhong Agriculture University: Huazhong Agricultural University College of Science CHINA
| | - Yonggang Xiang
- College of Science Huazhong Agricultural University Shizishan Avenue 430070 Wuhan CHINA
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38
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Yu H, Wang D. Suppressing the Excitonic Effect in Covalent Organic Frameworks for Metal-Free Hydrogen Generation. JACS AU 2022; 2:1848-1856. [PMID: 36032531 PMCID: PMC9400042 DOI: 10.1021/jacsau.2c00169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photocatalytic hydrogen generation is a promising solution for renewable energy production and plays a role in achieving carbon neutrality. Covalent organic frameworks (COFs) with highly designable backbones and inherent pores have emerged as novel photocatalysts, yet the strong excitonic effect in COFs can impede the promotion of energy conversion efficiency. Here, we propose a facile approach to suppress the excitonic effect in COFs, which is by narrowing the band gap and increasing the dielectric screening via a rational backbone design and chemical modifications. Based on the GW-BSE method, we uncover a linear relationship between the electronic dielectric constant and the inverse square of the optical band gap of COFs of the Lieb lattice. We further demonstrate that both reduced exciton binding energy and enhanced sunlight absorption can be simultaneously realized in COFs with a narrow band gap. Specifically, we show that one of our designed COFs whose exciton binding energy is nearly half that of g-C3N4 is capable of metal-free hydrogen production under near-infrared light irradiation. Our results showcase an effective method to suppress the excitonic effect in COFs and also pave the way for their applications in photocatalytic, photovoltaic, and other related solar energy conversions.
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39
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Xiang L, Yuan S, Wang F, Xu Z, Li X, Tian F, Wu L, Yu W, Mai Y. Porous Polymer Cubosomes with Ordered Single Primitive Bicontinuous Architecture and Their Sodium-Iodine Batteries. J Am Chem Soc 2022; 144:15497-15508. [PMID: 35979963 DOI: 10.1021/jacs.2c02881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bicontinuous porous materials, which possess 3D interconnected pore channels facilitating a smooth mass transport, have attracted much interest in the fields of energy and catalysis. However, their synthesis remains very challenging. We report a general approach, using polymer cubosomes as the template, for the controllable synthesis of bicontinuous porous polymers with an ordered single primitive (SP) cubic structure, including polypyrrole (SP-PPy), poly-m-phenylenediamine (SP-PmPD), and polydopamine (SP-PDA). Specifically, the resultant SP-PPy had a unit cell parameter of 99 nm, pore diameter of 45 nm, and specific surface area of approximately 60 m2·g-1. As a proof of concept, the I2-adsorbed SP-PPy was employed as the cathode materials of newly emerged Na-I2 batteries, which delivered a record-high specific capacity (235 mA·h·g-1 at 0.5 C), excellent rate capability, and cycling stability (with a low capacity decay of 0.12% per cycle within 400 cycles at 1 C). The advantageous contributions of the bicontinuous structure and I3- adsorption mechanism of SP-PPy were revealed by a combination of ion diffusion experiments and theoretical calculations. This study opens a new avenue for the synthesis of porous polymers with new topologies, broadens the spectrum of bicontinuous-structured materials, and also develops a novel potential application for porous polymers.
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Affiliation(s)
- Luoxing Xiang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Siqi Yuan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Faxing Wang
- Center for Advancing Electronics Dresden (CFAED) & Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, Dresden 01069, Germany
| | - Zhihan Xu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiuhong Li
- Shanghai Synchrotron Radiation Facility, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, China
| | - Feng Tian
- Shanghai Synchrotron Radiation Facility, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, China
| | - Liang Wu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wei Yu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yiyong Mai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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40
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Pesticide detection with covalent-organic-framework nanofilms at terahertz band. Biosens Bioelectron 2022; 209:114274. [DOI: 10.1016/j.bios.2022.114274] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 04/02/2022] [Accepted: 04/08/2022] [Indexed: 11/22/2022]
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41
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Noh HJ, Chung S, Okyay MS, Im YK, Kim SW, Kweon DH, Jeon JP, Seo JM, Kim NH, Yu SY, Reo Y, Noh YY, Kang B, Park N, Mahmood J, Cho K, Baek JB. Hydrophenazine-linked two-dimensional ladder-type crystalline fused aromatic network with high charge transport. Chem 2022. [DOI: 10.1016/j.chempr.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Feng T, Sun B, Hao Q, Li J, Xu Y, Shang H, Wang D. Ambient synthesis of metal-covalent organic frameworks with Fe-iminopyridine linkages. Chem Commun (Camb) 2022; 58:8830-8833. [PMID: 35848845 DOI: 10.1039/d2cc03148e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly crystalline Fe-COFs were constructed from the building blocks carrying pyridyl-aldehyde and triamine moieties in the presence of Fe(OTf)2 and acetic acid under ambient conditions via a subcomponent assembly strategy. The spectral results prove the coordination of atomically distributed Fe(II) ions with the nitrogen species of covalently formed iminopyridine linkages.
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Affiliation(s)
- Tiantian Feng
- School of Science, China University of Geosciences (Beijing), Beijing 100083, P. R. China. .,Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences, Beijing 100190, P. R. China.
| | - Bing Sun
- School of Science, China University of Geosciences (Beijing), Beijing 100083, P. R. China.
| | - Qing Hao
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences, Beijing 100190, P. R. China.
| | - Jing Li
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Ying Xu
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences, Beijing 100190, P. R. China.
| | - Hong Shang
- School of Science, China University of Geosciences (Beijing), Beijing 100083, P. R. China.
| | - Dong Wang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences, Beijing 100190, P. R. China.
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43
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Two-dimensional conjugated N-rich covalent organic frameworks for superior sodium storage. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1269-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Zhu Y, Weng W, Zhou T, Lin Z, Ding N, Maitarad P, Wang C, Guo J. Iodine-doped covalent organic frameworks with coaxially stacked cruciform anthracenes for high Hall mobility. Chem Commun (Camb) 2022; 58:6606-6609. [PMID: 35583227 DOI: 10.1039/d2cc01721k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cruciform anthracene building blocks are designed to construct an electroactive two-dimensional covalent organic framework (COF). Upon doping with iodine, cationic radicals are produced on the COF to exhibit structure-enhanced charge transfer properties with a low activation energy (0.13 eV) and a high Hall mobility (10.5 cm2 V-1 s-1).
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Affiliation(s)
- Yunyang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
| | - Weijun Weng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
| | - Ting Zhou
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
| | - Zheng Lin
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
| | - Ning Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
| | - Phornphimon Maitarad
- Research Center of Nano Science and Technology, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, P. R. China
| | - Changchun Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
| | - Jia Guo
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, P. R. China.
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45
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Guo Q, Ji H, Yang L, Ji D, Ai Z, Luo S, Sun J, Liu Y, Wei D. Olefin-linked covalent organic frameworks with twisted tertiary amine knots for enhanced ultraviolet detection. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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46
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Fritz PW, Chen T, Ashirov T, Nguyen AD, Dincă M, Coskun A. Fully Conjugated Tetraoxa[8]circulene-Based Porous Semiconducting Polymers. Angew Chem Int Ed Engl 2022; 61:e202116527. [PMID: 35172031 PMCID: PMC9313886 DOI: 10.1002/anie.202116527] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 11/09/2022]
Abstract
Tetraoxa[8]circulenes (TOCs) are a class of hetero[8]circulenes featuring a planar cyclooctatetraene core with a mixed aromatic/antiaromatic motif that governs their electronic properties. Polymeric TOCs (pTOCs) have been the subject of several computational simulations because they are predicted to be low-band-gap semiconductors, but they have not been available synthetically yet. Here, we report the first example of pTOCs, a new family of porous semiconductors, synthesized under ionothermal conditions through the intermolecular cyclization of 1,4,5,8-anthracene tetrone. pTOCs are porous, with surface areas up to 1656 m2 g-1 , and exhibit light-switchable and tunable semiconducting properties.
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Affiliation(s)
- Patrick W Fritz
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Tianyang Chen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA
| | - Timur Ashirov
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Anh-Dao Nguyen
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA
| | - Ali Coskun
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
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47
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Fritz PW, Chen T, Ashirov T, Nguyen A, Dincă M, Coskun A. Fully Conjugated Tetraoxa[8]circulene‐Based Porous Semiconducting Polymers. Angew Chem Int Ed Engl 2022; 61. [DOI: https:/doi.org/10.1002/anie.202116527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 07/03/2024]
Abstract
AbstractTetraoxa[8]circulenes (TOCs) are a class of hetero[8]circulenes featuring a planar cyclooctatetraene core with a mixed aromatic/antiaromatic motif that governs their electronic properties. Polymeric TOCs (pTOCs) have been the subject of several computational simulations because they are predicted to be low‐band‐gap semiconductors, but they have not been available synthetically yet. Here, we report the first example of pTOCs, a new family of porous semiconductors, synthesized under ionothermal conditions through the intermolecular cyclization of 1,4,5,8‐anthracene tetrone. pTOCs are porous, with surface areas up to 1656 m2 g−1, and exhibit light‐switchable and tunable semiconducting properties.
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Affiliation(s)
- Patrick W. Fritz
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Tianyang Chen
- Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
| | - Timur Ashirov
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Anh‐Dao Nguyen
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
| | - Mircea Dincă
- Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
| | - Ali Coskun
- Department of Chemistry University of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland
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48
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Fu S, Jin E, Hanayama H, Zheng W, Zhang H, Di Virgilio L, Addicoat MA, Mezger M, Narita A, Bonn M, Müllen K, Wang HI. Outstanding Charge Mobility by Band Transport in Two-Dimensional Semiconducting Covalent Organic Frameworks. J Am Chem Soc 2022; 144:7489-7496. [PMID: 35420808 PMCID: PMC9052747 DOI: 10.1021/jacs.2c02408] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
![]()
Two-dimensional covalent
organic frameworks (2D COFs) represent
a family of crystalline porous polymers with a long-range order and
well-defined open nanochannels that hold great promise for electronics,
catalysis, sensing, and energy storage. To date, the development of
highly conductive 2D COFs has remained challenging due to the finite
π-conjugation along the 2D lattice and charge localization at
grain boundaries. Furthermore, the charge transport mechanism within
the crystalline framework remains elusive. Here, time- and frequency-resolved
terahertz spectroscopy reveals intrinsically Drude-type band transport
of charge carriers in semiconducting 2D COF thin films condensed by
1,3,5-tris(4-aminophenyl)benzene (TPB) and 1,3,5-triformylbenzene
(TFB). The TPB–TFB COF thin films demonstrate high photoconductivity
with a long charge scattering time exceeding 70 fs at room temperature
which resembles crystalline inorganic materials. This corresponds
to a record charge carrier mobility of 165 ± 10 cm2 V–1 s–1, vastly outperforming
that of the state-of-the-art conductive COFs. These results reveal
TPB–TFB COF thin films as promising candidates for organic
electronics and catalysis and provide insights into the rational design
of highly crystalline porous materials for efficient and long-range
charge transport.
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Affiliation(s)
- Shuai Fu
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Enquan Jin
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany.,State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry and International Center of Future Science, Jilin University, Changchun 130012, P.R. China
| | - Hiroki Hanayama
- Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Wenhao Zheng
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Heng Zhang
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Lucia Di Virgilio
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Matthew A Addicoat
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, U.K
| | - Markus Mezger
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Akimitsu Narita
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany.,Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany.,Institute of Physical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, Mainz 55128, Germany
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz D-55128, Germany
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49
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Wang X, Han X, Cheng C, Kang X, Liu Y, Cui Y. 2D Covalent Organic Frameworks with cem Topology. J Am Chem Soc 2022; 144:7366-7373. [PMID: 35418223 DOI: 10.1021/jacs.2c01082] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A large number of covalent organic frameworks (COFs) with two-dimensional (2D) layered structures have been reported, but their network structures are restricted to only seven topologies (namely, hcb, hxl, kgm, sql, tth, bex, and kgd) because of the limited choice of building blocks. In this work, we illustrate how linking pseudo-fivefold symmetric 1,2,3,4,5-penta(4-formylphenyl)pyrrole with linear aromatic diamines through dynamic imine bonds produces three 2D porous COFs with an unprecedented cem topology, which represent the first examples of five-vertex semiregular Archimedean tessellations in COFs. The three 2D COFs are isostructural, and each adopts an eclipsed stacking structure with unidirectional hierarchical pores, in which the pyrrole unit is utilized as the five-vertex of network to form both square and triangular pores in a 33.42 sequence. With high thermal and chemical resistances, the COF-packed HPLC columns show excellent performance to provide separation of 10 different polycyclic aromatic hydrocarbons, a group of the most widespread organic environmental pollutants. The implementation of five-vertex Archimedean tessellations thus couriers a strategy to design COFs with new topologies and paves a new way to expand the inimitable properties of COF materials.
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Affiliation(s)
- Xuan Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xing Han
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Cheng Cheng
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xing Kang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yong Cui
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
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50
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Zhao Y, Liu L, Liu S, Wang Y, Li Y, Zhang XD. Electronic and Near-Infrared-II Optical Properties of I-Doped Monolayer MoTe 2: A First-Principles Study. ACS OMEGA 2022; 7:11956-11963. [PMID: 35449971 PMCID: PMC9016853 DOI: 10.1021/acsomega.2c00071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Near-infrared-II (NIR-II, 1000-1700 nm) fluorescence imaging is widely used for in vivo biological imaging. With the unique electronic structures and capability of band-gap engineering, two-dimensional (2D) materials can be potential candidates for NIR-II imaging. Herein, a theoretical investigation of the electronic structure and optical properties of iodine (I)-doped monolayer MoTe2 systems with different doping concentrations is carried out through simulations to explore their NIR optical properties. The results suggest that the emergence of impurity levels due to I doping effectively reduces the bandwidth of I-doped monolayer MoTe2 systems, and the bandwidth decreases with the increase in the I doping concentration. Although the I and Mo atoms possess clear covalent-bonding features according to the charge density difference, impurity levels induced by the strong hybridization between the I 5p and Mo 4d orbitals cross the Fermi level, making the doped systems exhibit metallic behavior. In addition, with the increase in the I doping concentration, the energy required for electron transition from valence bands to impurity levels gradually decreases, which can be linked to the enhancement of the optical absorption in the red-shifted NIR-II region. Meanwhile, with a higher I doping concentration, the emission spectra, which are the product of the absorption spectra and quasi-Fermi distributions for electrons and holes, can be enhanced in the NIR-II window.
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Affiliation(s)
- Yue Zhao
- Tianjin
Key Laboratory of Brain Science and Neural Engineering, Academy of
Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Ling Liu
- Tianjin
Key Laboratory of Brain Science and Neural Engineering, Academy of
Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Department
of Physics, Shanxi Medical University, Taiyuan 030001, China
| | - Shuangjie Liu
- Tianjin
Key Laboratory of Brain Science and Neural Engineering, Academy of
Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Yang Wang
- Tianjin
Key Laboratory of Brain Science and Neural Engineering, Academy of
Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Yonghui Li
- Department
of Physics and Tianjin Key Laboratory of Low Dimensional Materials
Physics and Preparing Technology, Institute of Advanced Materials
Physics, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Xiao-Dong Zhang
- Tianjin
Key Laboratory of Brain Science and Neural Engineering, Academy of
Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Department
of Physics and Tianjin Key Laboratory of Low Dimensional Materials
Physics and Preparing Technology, Institute of Advanced Materials
Physics, School of Sciences, Tianjin University, Tianjin 300350, China
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