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Nam J, Kim S, Jin E, Lee S, Cho HJ, Min SK, Choe W. Zeolitic Imidazolate Frameworks as Solid-State Nanomachines. Angew Chem Int Ed Engl 2024; 63:e202404061. [PMID: 38696243 DOI: 10.1002/anie.202404061] [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: 02/27/2024] [Indexed: 06/15/2024]
Abstract
Machines have continually developed with the needs of daily life and industrial applications. While the careful design of molecular-scale devices often displays enhanced properties along with mechanical movements, controlling mechanics within solid-state molecular structures remains a significant challenge. Here, we explore the distinct mechanical properties of zeolitic imidazolate frameworks (ZIFs)-frameworks that contain hidden mechanical components. Using a combination of experimental and theoretical approaches, we uncover the machine-like capabilities of ZIFs, wherein connected composite building units operate similarly to a mechanical linkage system. Importantly, this research suggests that certain ZIF subunits act as core mechanical components, paving an innovative view for the future design of solid-state molecular machines.
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Affiliation(s)
- Joohan Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Seokjin Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Eunji Jin
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Soochan Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hye Jin Cho
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Seung Kyu Min
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Wonyoung Choe
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Graduate School of Artificial Intelligence, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
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2
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Xu T, Jiang W, Tao Y, Abdellatief M, Cordova KE, Zhang YB. Popping and Locking: Balanced Rigidity and Porosity of Zeolitic Imidazolate Frameworks for High-Productivity Methane Purification. J Am Chem Soc 2024. [PMID: 38602012 DOI: 10.1021/jacs.4c00045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Zeolitic imidazolate frameworks (ZIFs) hold great promise in carbon capture, owing to their structural designability and functional porosity. However, intrinsic linker dynamics limit their pressure-swing adsorption application to biogas upgrading and methane purification. Recently, a functionality-locking strategy has shown feasibility in suppressing such dynamics. Still, a trade-off between structural rigidity and uptake capacity remains a key challenge for optimizing their high-pressure CO2/CH4 separation performance. Here, we report a sequential structural locking (SSL) strategy for enhancing the CO2 capture capacity and CH4 purification productivity in dynamic ZIFs (dynaZIFs). Specifically, we isolated multiple functionality-locked phases, ZIF-78-lt, -ht1, and -ht2, by activation at 50, 160, and 210 °C, respectively. We observed multiple-level locking through gas adsorption and powder X-ray diffraction. We uncovered an SSL mechanism dominated by linker-linker π-π interactions that transit to C-H···O hydrogen bonds with binding energies increasing from -0.64 to -2.77 and -5.72 kcal mol-1, respectively, as evidenced by single-crystal X-ray diffraction and density functional theory calculations. Among them, ZIF-78-ht1 exhibits the highest CO2 capture capacity (up to 18.6 mmol g-1) and CH4 purification productivity (up to 7.6 mmol g-1) at 298 K and 30 bar. These findings provide molecular and energetic insights into leveraging framework flexibility through the SSL mechanism to optimize porous materials' separation performance.
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Affiliation(s)
- Tongtong Xu
- School of Physical Science and Technology, Shanghai Key Laboratory of High-Resolution Electron Microscopy, State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
| | - Wentao Jiang
- School of Physical Science and Technology, Shanghai Key Laboratory of High-Resolution Electron Microscopy, State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
| | - Yu Tao
- School of Physical Science and Technology, Shanghai Key Laboratory of High-Resolution Electron Microscopy, State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
| | - Mahmoud Abdellatief
- Synchrotron-light for Experimental Science and Applications in the Middle East (SESAME), Allan 19252, Jordan
| | - Kyle E Cordova
- Integrated Materials Systems (iMS) Research Unit, Advanced Research Center, Royal Scientific Society, Amman 11941, Jordan
| | - Yue-Biao Zhang
- School of Physical Science and Technology, Shanghai Key Laboratory of High-Resolution Electron Microscopy, State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
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3
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Bujalance-Fernández J, Jurado-Sánchez B, Escarpa A. The rise of metal-organic framework based micromotors. Chem Commun (Camb) 2023; 59:10464-10475. [PMID: 37580970 DOI: 10.1039/d3cc02775a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Micromotors (MMs) are micro and nanoscale devices capable of converting energy into autonomous motion. Metal-organic frameworks (MOFs) are crystalline materials that display exceptional properties such as high porosity, internal surface areas, and high biocompatibility. As such, MOFs have been used as active materials or building blocks for MMs. In this highlight, we describe the evolution of MOF-based MMs, focusing on the last 3 years. First, we covered the main propulsion mechanisms and designs, from catalytic to fuel-free MOF-based MMs. Secondly, we discuss recent applications of new fuel-free MOFs MM to give a critical overview of the current challenges of this blooming research field. The advantages and challenges discussed provide a useful guide for the design of the next generation MOF MMs toward real-world applications.
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Affiliation(s)
- Javier Bujalance-Fernández
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcala, Alcala de Henares, Madrid, E-28871, Spain.
| | - Beatriz Jurado-Sánchez
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcala, Alcala de Henares, Madrid, E-28871, Spain.
- Chemical Research Institute "Andres M. del Rio", University of Alcala, Alcala de Henares, Madrid, E-28871, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcala, Alcala de Henares, Madrid, E-28871, Spain.
- Chemical Research Institute "Andres M. del Rio", University of Alcala, Alcala de Henares, Madrid, E-28871, Spain
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Jain P, Kumari G, Bhogra M, Yanda P, Joseph B, Waghmare UV, Narayana C. Raman Evidence of Multiple Adsorption Sites and Structural Transformation in ZIF-4. Inorg Chem 2023; 62:7703-7715. [PMID: 37163305 DOI: 10.1021/acs.inorgchem.3c00067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The zeolitic imidazolate framework, ZIF-4, exhibits soft porosity and is known to show pore volume changes with temperatures, pressures, and guest adsorption. However, the mechanism and adsorption behavior of ZIF-4 are not completely understood. In this work, we report an open to narrow pore transition in ZIF-4 around T ∼ 253 K upon lowering the temperature under vacuum (10-6 Torr) conditions, facilitated by C-H···π interactions. In the gaseous environment of N2 and CO2 around the framework, characteristic Raman peaks of adsorbed gases were observed under ambient conditions of 293 K and 1 atm. A guest-induced transition at ∼153 K resulting in the opening of new adsorption sites was inferred from the Raman spectral changes in the C-H stretching modes and low-frequency modes (<200 cm-1). In contrast to a single vibrational mode generally reported for entrapped N2, we show three Raman modes of adsorbed N2 in ZIF-4. The adsorption is facilitated by dispersive and quadrupolar interactions. From our temperature-dependent Raman results and theoretical analysis based on the density functional tight-binding approach, we conclude that the C-Hs are the preferred adsorption sites on ZIF-4 in the following order: C4-H, C5-H > C2-H > center of the Im ring (interacting with C-H centers) > center of the cavity. We also show that with an increasing concentration of N2 adsorbed at low temperatures, the ZIF-4 structure undergoes shear distortion of the window formed by 4-imidazole rings and consequent volumetric expansion. Our results have immediate implications in the field of porous materials and could be vital in identifying subtle structural transformations that may favor or hinder guest adsorption.
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Affiliation(s)
- Priyanka Jain
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
| | - Gayatri Kumari
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
| | - Meha Bhogra
- Theoretical Science Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
- Department of Mechanical Engineering, Shiv Nadar University, Gautam Budh Nagar, Greater Noida, Uttar Pradesh 201314, India
| | - Premakumar Yanda
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
| | - Boby Joseph
- Elettra-Sincrotrone Trieste S.C. p. A., S.S. 14, Km 163.5 in Area Science Park, Basovizza 34149, Italy
| | - Umesh V Waghmare
- Theoretical Science Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
| | - Chandrabhas Narayana
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Karnataka 560064, India
- Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala 695014, India
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Dong X, Luo X, Zhao H, Qiao C, Li J, Yi J, Yang L, Oropeza FJ, Hu TS, Xu Q, Zeng H. Recent advances in biomimetic soft robotics: fabrication approaches, driven strategies and applications. SOFT MATTER 2022; 18:7699-7734. [PMID: 36205123 DOI: 10.1039/d2sm01067d] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Compared to traditional rigid-bodied robots, soft robots are constructed using physically flexible/elastic bodies and electronics to mimic nature and enable novel applications in industry, healthcare, aviation, military, etc. Recently, the fabrication of robots on soft matter with great flexibility and compliance has enabled smooth and sophisticated 'multi-degree-of-freedom' 3D actuation to seamlessly interact with humans, other organisms and non-idealized environments in a highly complex and controllable manner. Herein, we summarize the fabrication approaches, driving strategies, novel applications, and future trends of soft robots. Firstly, we introduce the different fabrication approaches to prepare soft robots and compare and systematically discuss their advantages and disadvantages. Then, we present the actuator-based and material-based driving strategies of soft robotics and their characteristics. The representative applications of soft robotics in artificial intelligence, medicine, sensors, and engineering are summarized. Also, some remaining challenges and future perspectives in soft robotics are provided. This work highlights the recent advances of soft robotics in terms of functional material selection, structure design, control strategies and biomimicry, providing useful insights into the development of next-generation functional soft robotics.
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Affiliation(s)
- Xiaoxiao Dong
- College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China.
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 1H9, Canada.
| | - Xiaohang Luo
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Hong Zhao
- College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China.
| | - Chenyu Qiao
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 1H9, Canada.
| | - Jiapeng Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Jianhong Yi
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
| | - Li Yang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 1H9, Canada.
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
| | - Francisco J Oropeza
- Department of Mechanical Engineering, California State University, Los Angeles, California 90032, USA
| | - Travis Shihao Hu
- Department of Mechanical Engineering, California State University, Los Angeles, California 90032, USA
| | - Quan Xu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 1H9, Canada.
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Knebel A, Caro J. Metal-organic frameworks and covalent organic frameworks as disruptive membrane materials for energy-efficient gas separation. NATURE NANOTECHNOLOGY 2022; 17:911-923. [PMID: 35995854 DOI: 10.1038/s41565-022-01168-3] [Citation(s) in RCA: 75] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
In this Review we survey the molecular sieving behaviour of metal-organic framework (MOF) and covalent organic framework (COF) membranes, which is different from that of classical zeolite membranes. The nature of MOFs as inorganic-organic hybrid materials and COFs as purely organic materials is powerful and disruptive for the field of gas separation membranes. The possibility of growing neat MOFs and COFs on membrane supports, while also allowing successful blending into polymer-filler composites, has a huge advantage over classical zeolite molecular sieves. MOFs and COFs allow synthetic access to more than 100,000 different structures and tailor-made molecular gates. Additionally, soft evacuation below 100 °C is often enough to achieve pore activation. Therefore, a huge number of synthetic methods for supported MOF and COF membrane thin films, such as solvothermal synthesis, seed-mediated growth and counterdiffusion, exist. Among them, methods with high scale-up potential, for example, layer-by-layer dip- and spray-coating, chemical and physical vapour deposition, and electrochemical methods. Additionally, physical methods have been developed that involve external stimuli, such as electric fields and light. A particularly important point is their ability to react to stimuli, which has allowed the 'drawbacks' of the non-ideality of the molecular sieving properties to be exploited in a completely novel research direction. Controllable gas transport through membrane films is a next-level property of MOFs and COFs, leading towards adaptive process deviation. MOF and COF particles are highly compatible with polymers, which allows for mixed-matrix membranes. However, these membranes are not simple MOF-polymer blends, as they require improved polymer-filler interactions, such as cross-linking or surface functionalization.
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Affiliation(s)
- A Knebel
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Jena, Germany.
| | - J Caro
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Hannover, Germany.
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China.
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Musarurwa H, Tavengwa NT. Stimuli-responsive polymers and their applications in separation science. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105282] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Song J, Pallach R, Frentzel‐Beyme L, Kolodzeiski P, Kieslich G, Vervoorts P, Hobday CL, Henke S. Tuning the High‐Pressure Phase Behaviour of Highly Compressible Zeolitic Imidazolate Frameworks: From Discontinuous to Continuous Pore Closure by Linker Substitution. Angew Chem Int Ed Engl 2022; 61:e202117565. [PMID: 35119185 PMCID: PMC9401003 DOI: 10.1002/anie.202117565] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Indexed: 11/30/2022]
Abstract
The high‐pressure behaviour of flexible zeolitic imidazolate frameworks (ZIFs) of the ZIF‐62 family with the chemical composition M(im)2−x(bim)x is presented (M2+=Zn2+, Co2+; im−=imidazolate; bim−=benzimidazolate, 0.02≤x≤0.37). High‐pressure powder X‐ray diffraction shows that the materials contract reversibly from an open pore (op) to a closed pore (cp) phase under a hydrostatic pressure of up to 4000 bar. Sequentially increasing the bim− fraction (x) reinforces the framework, leading to an increased threshold pressure for the op‐to‐cp phase transition, while the total volume contraction across the transition decreases. Most importantly, the typical discontinuous op‐to‐cp transition (first order) changes to an unusual continuous transition (second order) for x≥0.35. This allows finetuning of the void volume and the pore size of the material continuously by adjusting the pressure, thus opening new possibilities for MOFs in pressure‐switchable devices, membranes, and actuators.
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Affiliation(s)
- Jianbo Song
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Roman Pallach
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Louis Frentzel‐Beyme
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Pascal Kolodzeiski
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Gregor Kieslich
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Pia Vervoorts
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Claire L. Hobday
- Centre for Science at Extreme Conditions and EaStCHEM School of Chemistry The University of Edinburgh, King's Buildings West Mains Road Edinburgh EH9 3FJ U.K
| | - Sebastian Henke
- Anorganische Materialchemie Fakultät für Chemie & Chemische Biologie Technische Universität Dortmund Otto-Hahn-Straße 6 44227 Dortmund Germany
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Gon M, Tanaka K, Chujo Y. Recent Progresses on Designable Hybrids with Stimuli-Responsive Optical Properties Originating from Molecular Assembly Concerning Polyhedral Oligomeric Silsesquioxane. Chem Asian J 2022; 17:e202200144. [PMID: 35322576 DOI: 10.1002/asia.202200144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/18/2022] [Indexed: 11/10/2022]
Abstract
In this review, we describe recent progresses on the stimuli-responsive hybrid materials based on polyhedral oligomeric silsesquioxane (POSS) and their applications as a chemical sensor. In particular, we explain the unique functions originating from molecular assembly concerning POSS-containing soft materials mainly from our studies. POSS has an inorganic cubic core composed of silicon-oxygen (Si-O) bonds and organic substituents at each vertex. Owing to intrinsic properties of POSS, such as high thermal stability, rigidity, and low chemical reactivity, various robust hybrid materials have been developed. From the numerous numbers of POSS hybrids, we herein focus on the environment-sensitive optical materials in which molecular assembly of POSS itself and functional units connected to POSS should be a key factor for expressing material properties. We also explain the mechanisms of chemical sensors originating from these stimuli-responsive optical properties. Stimuli-responsive excimer emission and pollutant detectors, nanoplastic sensors with the water-dispersive POSS networks, trans fatty acid sensors, turn-on luminescent sensors for aerobic condition and fluoride anion sensors are described. We also mention the mechanochromic polyurethane hybrids and the thermally-durable mechanochromic luminescent materials. The roles of the unique optical properties from soft materials composed of rigid POSS, which doesn't have significant light-absorption and emission properties in the visible region, are surveyed.
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Affiliation(s)
- Masayuki Gon
- Kyoto University: Kyoto Daigaku, Polymer Chemistry, Kyoto University, Katsura Nishikyo-ku, 615-8510, Kyoto, JAPAN
| | - Kazuo Tanaka
- Kyoto University, Graduate School of Engineering, Department of Polymer Chemistry, Katsura, Nishikyo-ku, 615-8510, Kyoto, JAPAN
| | - Yoshiki Chujo
- Kyoto University: Kyoto Daigaku, Polymer chemistry, Kyoto University, Katsura Nishikyo-ku, 615-8510, Kyoto, JAPAN
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Rautenberg M, Gernhard M, Radnik J, Witt J, Roth C, Emmerling F. Mechanochemical Synthesis of Fluorine-Containing Co-Doped Zeolitic Imidazolate Frameworks for Producing Electrocatalysts. Front Chem 2022; 10:840758. [PMID: 35372277 PMCID: PMC8964432 DOI: 10.3389/fchem.2022.840758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/24/2022] [Indexed: 12/26/2022] Open
Abstract
Catalysts derived from pyrolysis of metal organic frameworks (MOFs) are promising candidates to replace expensive and scarce platinum-based electrocatalysts commonly used in polymer electrolyte membrane fuel cells. MOFs contain ordered connections between metal centers and organic ligands. They can be pyrolyzed into metal- and nitrogen-doped carbons, which show electrocatalytic activity toward the oxygen reduction reaction (ORR). Furthermore, metal-free heteroatom-doped carbons, such as N-F-Cs, are known for being active as well. Thus, a carbon material with Co-N-F doping could possibly be even more promising as ORR electrocatalyst. Herein, we report the mechanochemical synthesis of two polymorphs of a zeolitic imidazole framework, Co-doped zinc 2-trifluoromethyl-1H-imidazolate (Zn0.9Co0.1(CF3-Im)2). Time-resolved in situ X-ray diffraction studies of the mechanochemical formation revealed a direct conversion of starting materials to the products. Both polymorphs of Zn0.9Co0.1(CF3-Im)2 were pyrolyzed, yielding Co-N-F containing carbons, which are active toward electrochemical ORR.
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Affiliation(s)
- Max Rautenberg
- BAM Federal Institute of Materials Research and Testing, Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Marius Gernhard
- Fakultät für Ingenieurwissenschaften, Lehrstuhl für Werkstoffverfahrenstechnik, Universität Bayreuth, Bayreuth, Germany
| | - Jörg Radnik
- BAM Federal Institute of Materials Research and Testing, Berlin, Germany
| | - Julia Witt
- BAM Federal Institute of Materials Research and Testing, Berlin, Germany
| | - Christina Roth
- Fakultät für Ingenieurwissenschaften, Lehrstuhl für Werkstoffverfahrenstechnik, Universität Bayreuth, Bayreuth, Germany
| | - Franziska Emmerling
- BAM Federal Institute of Materials Research and Testing, Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Berlin, Germany
- *Correspondence: Franziska Emmerling,
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11
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Song J, Pallach R, Frentzel-Beyme L, Kolodzeiski P, Kieslich G, Vervoorts P, Hobday CL, Henke S. Tuning the High‐Pressure Phase Behaviour of Highly Compressible Zeolitic Imidazolate Frameworks: From Discontinuous to Continuous Pore Closure by Linker Substitution. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jianbo Song
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Roman Pallach
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Louis Frentzel-Beyme
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Pascal Kolodzeiski
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology GERMANY
| | - Gregor Kieslich
- TU Munchen: Technische Universitat Munchen Chemistry GERMANY
| | - Pia Vervoorts
- TU Munchen: Technische Universitat Munchen Chemistry GERMANY
| | | | - Sebastian Henke
- TU Dortmund: Technische Universitat Dortmund Chemistry and Chemical Biology Otto-Hahn-Straße 6 44227 Dortmund GERMANY
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12
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Du L, Zhang T, Li P, Chen W, Wu C. Zeolitic imidazolate framework-8/Bacterial Cellulose Composite for Iodine Loading and Its Antibacterial Performance. Dalton Trans 2022; 51:14317-14322. [DOI: 10.1039/d2dt01414a] [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
Bacterial cellulose (BC), produced by bacteria and fungi, is a promising material in the biomedical field. However, non-antibacterial activity limits its broad applications. Herein, antibacterial composites (BC/ZIF-8-Iodine) were prepared by...
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