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Wu W, Tang W, Shao ZW, Feng X, Xiong L, Xiong C, Lai Q, Liu C. Sacrificial-Hydroxamate-Enabled Sizable Crystallization of Scandium Carboxylate Metal-Organic Frameworks. Inorg Chem 2024; 63:1720-1724. [PMID: 38214245 DOI: 10.1021/acs.inorgchem.3c04363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Starting from labile hydroxamic acid ligands that are strong chelators, here, we implemented a sacrificial modulating strategy to prepare a series of scandium carboxylate metal-organic frameworks. Overcoming conventional syntheses that use excessive carboxylate modulators, the present strategy greatly reduces the organics required and produces large single crystals of several Sc-MOFs for X-ray crystallography.
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Affiliation(s)
- Wenjing Wu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Wenlei Tang
- National Key Laboratory for Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu 610213, China
| | - Zhen-Wu Shao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xuan Feng
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Li Xiong
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Chaozhi Xiong
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qiuxue Lai
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Chong Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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2
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Andreo J, Balsa AD, Tsang MY, Sinelshchikova A, Zaremba O, Wuttke S, Chin JM. Alignment of Breathing Metal-Organic Framework Particles for Enhanced Water-Driven Actuation. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:6943-6952. [PMID: 37719036 PMCID: PMC10500993 DOI: 10.1021/acs.chemmater.3c01186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/03/2023] [Indexed: 09/19/2023]
Abstract
As the majority of known metal-organic frameworks (MOFs) possess anisotropic crystal lattices and thus anisotropic physicochemical properties, a pressing practical challenge in MOF research is the establishment of robust and simple processing methods to fully harness the anisotropic properties of the MOFs in various applications. We address this challenge by applying an E-field to precisely align MIL-88A microcrystals and generate MIL-88A@polymer films. Thereafter, we demonstrate the impact of MOF crystal alignment on the actuation properties of the films as a proof of concept. We investigate how different anisotropies of the MIL-88A@polymer films, specifically, crystal anisotropy, particle alignment, and film composition, can lead to the synergetic enhancement of the film actuation upon water exposure. Moreover, we explore how the directionality in application of the external stimuli (dry/humid air stream, water/air interface) affects the direction and the extent of the MIL-88A@polymer film movement. Apart from the superior water-driven actuation properties of the developed films, we demonstrate by dynamometer measurements the higher degree of mechanical work performed by the aligned MIL-88A@polymer films with the preserved anisotropies compared to the unaligned films. The insights provided by this work into anisotropic properties displayed by aligned MIL-88A@polymer films promise to translate crystal performance benefits measured in laboratories into real-world applications. We anticipate that our work is a starting point to utilize the full potential of anisotropic properties of MOFs.
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Affiliation(s)
- Jacopo Andreo
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain
| | - Alejandra Durán Balsa
- Faculty
of Chemistry, Department of Functional Materials and Catalysis, University of Vienna, Währingerstr. 42, Vienna A-1090, Austria
| | - Min Ying Tsang
- Faculty
of Chemistry, Department of Functional Materials and Catalysis, University of Vienna, Währingerstr. 42, Vienna A-1090, Austria
| | - Anna Sinelshchikova
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain
| | - Orysia Zaremba
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain
| | - Stefan Wuttke
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Jia Min Chin
- Faculty
of Chemistry, Department of Functional Materials and Catalysis, University of Vienna, Währingerstr. 42, Vienna A-1090, Austria
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Lin Z, Zhong YH, Zhong L, Ye X, Chung LH, Hu X, Xu Z, Yu L, He J. Minimalist Design for Solar Energy Conversion: Revamping the π-Grid of an Organic Framework into Open-Shell Superabsorbers. JACS AU 2023; 3:1711-1722. [PMID: 37388679 PMCID: PMC10302748 DOI: 10.1021/jacsau.3c00132] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 07/01/2023]
Abstract
We apply a versatile reaction to a versatile solid: the former involves the electron-deficient alkene tetracyanoethylene (TCNE) as the guest reactant; the latter consists of stacked 2D honeycomb covalent networks based on the electron-rich β-ketoenamine hinges that also activate the conjugated, connecting alkyne units. The TCNE/alkyne reaction is a [2 + 2] cycloaddition-retroelectrocyclization (CA-RE) that forms strong push-pull units directly into the backbone of the framework-i.e., using only the minimalist "bare-bones" scaffold, without the need for additional side groups of alkynes or other functions. The ability of the stacked alkyne units (i.e., as part of the honeycomb mass) to undergo such extensive rearrangement highlights the structural flexibility of these covalent organic framework (COF) hosts. The COF solids remain porous, crystalline, and air-/water-stable after the CA-RE modification, while the resulting push-pull units feature distinct open-shell/free-radical character, are strongly light-absorbing, and shift the absorption ends from 590 nm to around 1900 nm (band gaps from 2.17-2.23 to 0.87-0.95 eV), so as to better capture sunlight (especially the infrared region which takes up 52% of the solar energy). As a result, the modified COF materials achieve the highest photothermal conversion performances, holding promise in thermoelectric power generation and solar steam generation (e.g., with solar-vapor conversion efficiencies >96%).
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Affiliation(s)
- Zhiqing Lin
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuan-Hui Zhong
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Leheng Zhong
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Xinhe Ye
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Lai-Hon Chung
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Xuanhe Hu
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhengtao Xu
- Institute
of Materials Research and Engineering (IMRE), Agency for Science,
Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Lin Yu
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Jun He
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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Azbell TJ, Mandel RM, Lee JH, Milner PJ. Reactive Chlorine Capture by Dichlorination of Alkene Linkers in Metal-Organic Frameworks. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53928-53935. [PMID: 36413751 PMCID: PMC10022271 DOI: 10.1021/acsami.2c17966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Chlorine (Cl2) is a toxic and corrosive gas that is both an essential reagent in industry and a potent chemical warfare agent. Materials that can strongly bind Cl2 at low pressures are essential for industrial and civilian personal protective equipment (PPE). Herein, we report the first examples of irreversible Cl2 capture via the dichlorination of alkene linkages in Zr-based metal-organic frameworks. Frameworks constructed from fumarate (Zr-fum) and stilbene (Zr-stilbene) linkers retain long-range order and accessible porosity after alkene dichlorination. In addition, energy-dispersive X-ray spectroscopy reveals an even distribution of Cl throughout both materials after Cl2 capture. Cl2 uptake experiments reveal high irreversible uptake of Cl2 (>10 wt %) at low partial pressures (<100 mbar), particularly in Zr-fum. In contrast, traditional porous carbons mostly display reversible Cl2 capture, representing a continued risk to users after exposure. Overall, our results support that alkene dichlorination represents a new pathway for reactive Cl2 capture, opening new opportunities for binding this gas irreversibly in PPE.
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Affiliation(s)
- Tyler J. Azbell
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14850, United States
| | - Ruth M. Mandel
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14850, United States
| | - Jung-Hoon Lee
- Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Phillip J. Milner
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14850, United States
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