1
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Hu Y, Sengupta B, Long H, Wayment LJ, Ciora R, Jin Y, Wu J, Lei Z, Friedman K, Chen H, Yu M, Zhang W. Molecular recognition with resolution below 0.2 angstroms through thermoregulatory oscillations in covalent organic frameworks. Science 2024; 384:1441-1447. [PMID: 38935724 DOI: 10.1126/science.adj8791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 05/13/2024] [Indexed: 06/29/2024]
Abstract
Crystalline materials with uniform molecular-sized pores are desirable for a broad range of applications, such as sensors, catalysis, and separations. However, it is challenging to tune the pore size of a single material continuously and to reversibly distinguish small molecules (below 4 angstroms). We synthesized a series of ionic covalent organic frameworks using a tetraphenoxyborate linkage that maintains meticulous synergy between structural rigidity and local flexibility to achieve continuous and reversible (100 thermal cycles) tunability of "dynamic pores" between 2.9 and 4.0 angstroms, with resolution below 0.2 angstroms. This results from temperature-regulated, gradual amplitude change of high-frequency linker oscillations. These thermoelastic apertures selectively block larger molecules over marginally smaller ones, demonstrating size-based molecular recognition and the potential for separating challenging gas mixtures such as oxygen/nitrogen and nitrogen/methane.
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Affiliation(s)
- Yiming Hu
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Bratin Sengupta
- Department of Chemical and Biological Engineering and RENEW Institute, University at Buffalo, Buffalo, NY 14260, USA
| | - Hai Long
- Computational Science Center, National Renewable Energy Laboratory, Golden, CO 80401, USA
| | - Lacey J Wayment
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Richard Ciora
- Department of Chemical and Biological Engineering and RENEW Institute, University at Buffalo, Buffalo, NY 14260, USA
| | - Yinghua Jin
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Jingyi Wu
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Zepeng Lei
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Kaleb Friedman
- Department of Chemical and Biological Engineering and RENEW Institute, University at Buffalo, Buffalo, NY 14260, USA
| | - Hongxuan Chen
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Miao Yu
- Department of Chemical and Biological Engineering and RENEW Institute, University at Buffalo, Buffalo, NY 14260, USA
| | - Wei Zhang
- Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, USA
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2
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Carsch K, Huang AJ, Dods MN, Parker ST, Rohde RC, Jiang HZH, Yabuuchi Y, Karstens SL, Kwon H, Chakraborty R, Bustillo KC, Meihaus KR, Furukawa H, Minor AM, Head-Gordon M, Long JR. Selective Adsorption of Oxygen from Humid Air in a Metal-Organic Framework with Trigonal Pyramidal Copper(I) Sites. J Am Chem Soc 2024; 146:3160-3170. [PMID: 38276891 PMCID: PMC10859921 DOI: 10.1021/jacs.3c10753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/07/2024] [Accepted: 01/08/2024] [Indexed: 01/27/2024]
Abstract
High or enriched-purity O2 is used in numerous industries and is predominantly produced from the cryogenic distillation of air, an extremely capital- and energy-intensive process. There is significant interest in the development of new approaches for O2-selective air separations, including the use of metal-organic frameworks featuring coordinatively unsaturated metal sites that can selectively bind O2 over N2 via electron transfer. However, most of these materials exhibit appreciable and/or reversible O2 uptake only at low temperatures, and their open metal sites are also potential strong binding sites for the water present in air. Here, we study the framework CuI-MFU-4l (CuxZn5-xCl4-x(btdd)3; H2btdd = bis(1H-1,2,3-triazolo[4,5-b],[4',5'-i])dibenzo[1,4]dioxin), which binds O2 reversibly at ambient temperature. We develop an optimized synthesis for the material to access a high density of trigonal pyramidal CuI sites, and we show that this material reversibly captures O2 from air at 25 °C, even in the presence of water. When exposed to air up to 100% relative humidity, CuI-MFU-4l retains a constant O2 capacity over the course of repeated cycling under dynamic breakthrough conditions. While this material simultaneously adsorbs N2, differences in O2 and N2 desorption kinetics allow for the isolation of high-purity O2 (>99%) under relatively mild regeneration conditions. Spectroscopic, magnetic, and computational analyses reveal that O2 binds to the copper(I) sites to form copper(II)-superoxide moieties that exhibit temperature-dependent side-on and end-on binding modes. Overall, these results suggest that CuI-MFU-4l is a promising material for the separation of O2 from ambient air, even without dehumidification.
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Affiliation(s)
- Kurtis
M. Carsch
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Adrian J. Huang
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Matthew N. Dods
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Surya T. Parker
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Rachel C. Rohde
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Henry Z. H. Jiang
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Yuto Yabuuchi
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Sarah L. Karstens
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Hyunchul Kwon
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Romit Chakraborty
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Karen C. Bustillo
- National
Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Katie R. Meihaus
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Hiroyasu Furukawa
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Andrew M. Minor
- National
Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department
of Materials Science and Engineering, University
of California, Berkeley, Berkeley, California 94720, United States
| | - Martin Head-Gordon
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Jeffrey R. Long
- Institute
for Decarbonization Materials, University
of California, Berkeley, Berkeley, California 94720, United States
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
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3
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Zhang F, Shang H, Zhai B, Zhao Z, Wang Y, Li L, Li J, Yang J. Synergistic Nitrogen Binding Sites in a Metal-Organic Framework for Efficient N 2 /O 2 Separation. Angew Chem Int Ed Engl 2023; 62:e202316149. [PMID: 37937327 DOI: 10.1002/anie.202316149] [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: 10/25/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/09/2023]
Abstract
Porous materials with d3 electronic configuration open metal sites have been proved to be effective adsorbents for N2 capture and N2 /O2 separation. However, the reported materials remain challenging to address the trade-off between adsorption capacity and selectivity. Herein, we report a robust MOF, MIL-102Cr, that features two binding sites, can synergistically afford strong interactions for N2 capture. The synergistic adsorption site exhibits a benchmark Qst of 45.0 kJ mol-1 for N2 among the Cr-based MOFs, a record-high volumetric N2 uptake (31.38 cm3 cm-3 ), and highest N2 /O2 selectivity (13.11) at 298 K and 1.0 bar. Breakthrough experiments reveal that MIL-102Cr can efficiently capture N2 from a 79/21 N2 /O2 mixture, providing a record 99.99 % pure O2 productivity of 0.75 mmol g-1 . In situ infrared spectroscopy and computational modelling studies revealed that a synergistic adsorption effect by open Cr(III) and fluorine sites was accountable for the strong interactions between the MOF and N2 .
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Affiliation(s)
- Feifei Zhang
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
| | - Hua Shang
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
| | - Bolun Zhai
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
| | - Zhiwei Zhao
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
| | - Yong Wang
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
| | - Libo Li
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
| | - Jinping Li
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030024, Shanxi Province, China
| | - Jiangfeng Yang
- College of Chemistry and Chemical Engineering, Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi Province, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030024, Shanxi Province, China
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4
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Park J, Jaramillo DE, Shi Y, Jiang HZH, Yusuf H, Furukawa H, Bloch ED, Cormode DS, Miller JS, Harris TD, Johnston-Halperin E, Flatté ME, Long JR. Permanent Porosity in the Room-Temperature Magnet and Magnonic Material V(TCNE) 2. ACS CENTRAL SCIENCE 2023; 9:777-786. [PMID: 37122461 PMCID: PMC10141614 DOI: 10.1021/acscentsci.3c00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Indexed: 05/03/2023]
Abstract
Materials that simultaneously exhibit permanent porosity and high-temperature magnetic order could lead to advances in fundamental physics and numerous emerging technologies. Herein, we show that the archetypal molecule-based magnet and magnonic material V(TCNE)2 (TCNE = tetracyanoethylene) can be desolvated to generate a room-temperature microporous magnet. The solution-phase reaction of V(CO)6 with TCNE yields V(TCNE)2·0.95CH2Cl2, for which a characteristic temperature of T* = 646 K is estimated from a Bloch fit to variable-temperature magnetization data. Removal of the solvent under reduced pressure affords the activated compound V(TCNE)2, which exhibits a T* value of 590 K and permanent microporosity (Langmuir surface area of 850 m2/g). The porous structure of V(TCNE)2 is accessible to the small gas molecules H2, N2, O2, CO2, ethane, and ethylene. While V(TCNE)2 exhibits thermally activated electron transfer with O2, all the other studied gases engage in physisorption. The T* value of V(TCNE)2 is slightly modulated upon adsorption of H2 (T* = 583 K) or CO2 (T* = 596 K), while it decreases more significantly upon ethylene insertion (T* = 459 K). These results provide an initial demonstration of microporosity in a room-temperature magnet and highlight the possibility of further incorporation of small-molecule guests, potentially even molecular qubits, toward future applications.
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Affiliation(s)
- Jesse
G. Park
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - David E. Jaramillo
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Yueguang Shi
- Department
of Physics and Astronomy, University of
Iowa, Iowa City, Iowa 52242-1479, United States
| | - Henry Z. H. Jiang
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Institute
for Decarbonization Materials, Berkeley, California 94720, United States
| | - Huma Yusuf
- Department
of Physics, Ohio State University, Columbus, Ohio 43210-1117, United States
| | - Hiroyasu Furukawa
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Institute
for Decarbonization Materials, Berkeley, California 94720, United States
| | - Eric D. Bloch
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Donley S. Cormode
- Department
of Physics, Ohio State University, Columbus, Ohio 43210-1117, United States
| | - Joel S. Miller
- Department
of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850, United States
| | - T. David Harris
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- Institute
for Decarbonization Materials, Berkeley, California 94720, United States
| | | | - Michael E. Flatté
- Department
of Physics and Astronomy, University of
Iowa, Iowa City, Iowa 52242-1479, United States
- Department
of Applied Physics, Eindhoven University
of Technology, Eindhoven 5612 AZ, The Netherlands
| | - Jeffrey R. Long
- Department
of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Institute
for Decarbonization Materials, Berkeley, California 94720, United States
- Department
of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States
- Email
for J.R.L.:
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5
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Shivanna M, Zheng JJ, Ray KG, Lto S, Ashitani H, Kubota Y, Kawaguchi S, Stavila V, Yao MS, Fujikawa T, Otake KI, Kitagawa S. Selective sorption of oxygen and nitrous oxide by an electron donor-incorporated flexible coordination network. Commun Chem 2023; 6:62. [PMID: 37016050 PMCID: PMC10073098 DOI: 10.1038/s42004-023-00853-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 03/10/2023] [Indexed: 04/06/2023] Open
Abstract
Incorporating strong electron donor functionality into flexible coordination networks is intriguing for sorption applications due to a built-in mechanism for electron-withdrawing guests. Here we report a 2D flexible porous coordination network, [Ni2(4,4'-bipyridine)(VTTF)2]n(1) (where H2VTTF = 2,2'-[1,2-bis(4-benzoic acid)-1,2ethanediylidene]bis-1,3-benzodithiole), which exhibits large structural deformation from the as-synthesized or open phase (1α) into the closed phase (1β) after guest removal, as demonstrated by X-ray and electron diffraction. Interestingly, upon exposure to electron-withdrawing species, 1β reversibly undergoes guest accommodation transitions; 1α⊃O2 (90 K) and 1α⊃N2O (185 K). Moreover, the 1β phase showed exclusive O2 sorption over other gases (N2, Ar, and CO) at 120 K. The phase transformations between the 1α and 1β phases under these gases were carefully investigated by in-situ X-ray diffraction, in-situ spectroscopic studies, and DFT calculations, validating that the unusual sorption was attributed to the combination of flexible frameworks and VTTF (electron-donor) that induces strong interactions with electron-withdrawing species.
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Affiliation(s)
- Mohana Shivanna
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Jia-Jia Zheng
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Keith G Ray
- Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Sho Lto
- Rigaku Corporation, 3-9-12 Matsubara-cho, Akishima, Tokyo, 196-8666, Japan
| | - Hirotaka Ashitani
- Department of Physics, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Yoshiki Kubota
- Department of Physics, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
- Department of Physical Science, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka, 599-8531, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | | | - Ming-Shui Yao
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Takao Fujikawa
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Ken-Ichi Otake
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
| | - Susumu Kitagawa
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
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6
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Xu T, Zhang P, Cui F, Li J, Kan L, Tang B, Zou X, Liu Y, Zhu G. Fine-Tuned Ultra-Microporous Metal-Organic Framework in Mixed-Matrix Membrane: Pore-Tailoring Optimization for C 2 H 2 /C 2 H 4 Separation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2204553. [PMID: 36573630 DOI: 10.1002/adma.202204553] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 10/27/2022] [Indexed: 06/18/2023]
Abstract
Effective separation of ethyne from ethyne/ethylene (C2 H2 /C2 H4 ) mixtures is a challenging and crucial industrial process. Herein, an ultra-microporous metal-organic framework (MOF) platform, Cd(dicarboxylate)2 (ditriazole), with triangular channels is proposed for high-efficiency separation of C2 H2 from C2 H4 . The targeted structures are constructed via a mixed-ligand strategy by selecting different-sized ligands, allowing for tunable pore sizes and volumes. The pore properties can be further optimized by additional modification via pore environment tailoring. This concept leads to the successful synthesis of three ultra-microporous Cd-MOFs (JLU-MOF87-89). As intended, C2 H2 uptake and C2 H2 /C2 H4 selectivity gradually increase with progressively optimizing the pore structure by adjusting ligand length and substituents. JLU-MOF89, functionalized with methyl groups, features the most optimal pore chemistry and shows selective recognition of C2 H2 over C2 H4 , owing to the framework-C2 H2 host-guest interactions. Furthermore, JLU-MOFs are fabricated into mixed-matrix membranes for C2 H2 /C2 H4 separation. C2 H2 permeability and C2 H2 /C2 H4 permselectivity are substantially enhanced by ≥400% and ≥200%, respectively, after hybridization of JLU-MOF88 and JLU-MOF89 with a polyimide polymer (6FDA-ODA). These membranes can work efficiently and are stable under different conditions, demonstrating their potential in actual ethyne separation.
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Affiliation(s)
- Tong Xu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Panpan Zhang
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Fengchao Cui
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Jiantang Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Liang Kan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Baobing Tang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Xiaoqin Zou
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Yunling Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Guangshan Zhu
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
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7
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Jose R, Bangar G, Pal S, Rajaraman G. Role of molecular modelling in the development of metal-organic framework for gas adsorption applications. J CHEM SCI 2023; 135:19. [PMID: 36938494 PMCID: PMC10011768 DOI: 10.1007/s12039-022-02130-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 10/31/2022] [Accepted: 12/28/2022] [Indexed: 03/21/2023]
Abstract
More than 47,000 articles have been published in the area of Metal-Organic Framework since its seminal discovery in 1995, exemplifying the intense research carried out in this short span of time. Among other applications, gas adsorption and storage are perceived as central to the MOFs research, and more than 10,000 MOFs structures are reported to date to utilize them for various gas storage/separation applications. Molecular modeling, particularly based on density functional theory, played a key role in (i) understanding the nature of interactions between the gas and the MOFs geometry (ii) establishing various binding pockets and relative binding energies, and (iii) offering design clues to improve the gas uptake capacity of existing MOF architectures. In this review, we have looked at various MOFs that are studied thoroughly using DFT/periodic DFT (pDFT) methods for CO2, H2, O2, and CH4 gases to provide a birds-eye-view on how various exchange-correlation functionals perform in estimating the binding energy for various gases and how factors such as nature of the (i) metal ion, (ii) linkers, (iii) ligand, (iv) spin state and (v) spin-couplings play a role in this process with selected examples. While there is still room for improvement, the rewards offered by the molecular modelling of MOFs were already substantial that we advocate experimental and theoretical studies to go hand-in-hand to undercut the trial-and-error approach that is often perceived in the selection of MOFs and gas partners in this area. Graphical abstract The importance of density functional theory-based molecular modeling studies in offering design clues to improve the gas adsorption and storage capacity of existing MOF architectures is discussed here. The use of DFT-based investigation in conjunction with experimental synthesis is an imperative tool in designing new-generation MOFs with enhanced uptake capacity.
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Affiliation(s)
- Reshma Jose
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India
| | - Garima Bangar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India
| | - Sourav Pal
- Department of Chemistry, Ashoka University, Sonepat, Haryana 131029 India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India
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8
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Jaramillo DE, Jaffe A, Snyder BER, Smith A, Taw E, Rohde RC, Dods MN, DeSnoo W, Meihaus KR, Harris TD, Neaton JB, Long JR. Metal-organic frameworks as O 2-selective adsorbents for air separations. Chem Sci 2022; 13:10216-10237. [PMID: 36277628 PMCID: PMC9473493 DOI: 10.1039/d2sc03577d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/21/2022] [Indexed: 02/05/2023] Open
Abstract
Oxygen is a critical gas in numerous industries and is produced globally on a gigatonne scale, primarily through energy-intensive cryogenic distillation of air. The realization of large-scale adsorption-based air separations could enable a significant reduction in associated worldwide energy consumption and would constitute an important component of broader efforts to combat climate change. Certain small-scale air separations are carried out using N2-selective adsorbents, although the low capacities, poor selectivities, and high regeneration energies associated with these materials limit the extent of their usage. In contrast, the realization of O2-selective adsorbents may facilitate more widespread adoption of adsorptive air separations, which could enable the decentralization of O2 production and utilization and advance new uses for O2. Here, we present a detailed evaluation of the potential of metal-organic frameworks (MOFs) to serve as O2-selective adsorbents for air separations. Drawing insights from biological and molecular systems that selectively bind O2, we survey the field of O2-selective MOFs, highlighting progress and identifying promising areas for future exploration. As a guide for further research, the importance of moving beyond the traditional evaluation of O2 adsorption enthalpy, ΔH, is emphasized, and the free energy of O2 adsorption, ΔG, is discussed as the key metric for understanding and predicting MOF performance under practical conditions. Based on a proof-of-concept assessment of O2 binding carried out for eight different MOFs using experimentally derived capacities and thermodynamic parameters, we identify two existing materials and one proposed framework with nearly optimal ΔG values for operation under user-defined conditions. While enhancements are still needed in other material properties, the insights from the assessments herein serve as a guide for future materials design and evaluation. Computational approaches based on density functional theory with periodic boundary conditions are also discussed as complementary to experimental efforts, and new predictions enable identification of additional promising MOF systems for investigation.
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Affiliation(s)
- David E Jaramillo
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - Adam Jaffe
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - Benjamin E R Snyder
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - Alex Smith
- Department of Physics, University of California Berkeley Berkeley California 94720 USA
| | - Eric Taw
- Department of Chemical and Biomolecular Engineering, University of California Berkeley Berkeley California 94720 USA
- Materials Science Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
| | - Rachel C Rohde
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - Matthew N Dods
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - William DeSnoo
- Department of Physics, University of California Berkeley Berkeley California 94720 USA
| | - Katie R Meihaus
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - T David Harris
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
| | - Jeffrey B Neaton
- Department of Physics, University of California Berkeley Berkeley California 94720 USA
- Molecular Foundry, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
- Kavli Nanosciences Institute at Berkeley Berkeley California 94720 USA
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley Berkeley California 94720 USA
- Department of Chemical and Biomolecular Engineering, University of California Berkeley Berkeley California 94720 USA
- Materials Science Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
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9
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Sutton AL, Melag L, Sadiq MM, Hill MR. Capture, Storage, and Release of Oxygen by Metal-Organic Frameworks (MOFs). Angew Chem Int Ed Engl 2022; 61:e202208305. [PMID: 35836372 PMCID: PMC9543296 DOI: 10.1002/anie.202208305] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Indexed: 11/09/2022]
Abstract
Oxygen is a critical gas for medical and industrial settings. Much of today's global oxygen supply is via inefficient technologies such as cryogenic distillation, membranes or zeolites. Metal-organic frameworks (MOFs) promise a superior alternative for oxygen separation, as their fundamental chemistry can in principle be tailored for reversible and selective oxygen capture. We evaluate the characteristics for reversible and selective uptake of oxygen by MOFs, focussing on redox-active sites. Key characteristics for separation can also be seen in MOFs for oxygen storage roles. Engineering solutions to release adsorbed oxygen from the MOFs are discussed including Temperature Swing Adsorption (TSA), Pressure Swing Adsorption (PSA) and the highly efficient Magnetic Induction Swing Adsorption (MISA). We conclude with the applications and outlooks for oxygen capture, storage and release, and the likely impacts the next generation of MOFs will have on industry and the broader community.
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Affiliation(s)
- Ashley L. Sutton
- ManufacturingCSIROPrivate Bag 33Clayton South MDCVic 3169Australia
| | - Leena Melag
- Department of Chemical EngineeringMonash UniversityClaytonVic 3168Australia
| | - M. Munir Sadiq
- Department of Chemical EngineeringMonash UniversityClaytonVic 3168Australia
| | - Matthew R. Hill
- ManufacturingCSIROPrivate Bag 33Clayton South MDCVic 3169Australia
- Department of Chemical EngineeringMonash UniversityClaytonVic 3168Australia
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10
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Deng L, Zhou ZH. Chiral Supramolecular Microporous Thio-Oxomolybdenum(V) Tartrates for the Selective Adsorptions of Gases. Inorg Chem 2022; 61:14787-14799. [PMID: 36057097 DOI: 10.1021/acs.inorgchem.2c02283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Two pairs of enantiomerically pure hexanuclear and tetranuclear microporous molybdenum(V) d/l-tartrates, (H2trz)3[Mo6O6(μ2-O)3(μ2-S)3(d/l-Htart)3(Htrz)6]·8H2O (abbreviated as d-1 and l-1; H4tart = tartaric acid, Htrz = 1,2,4-triazole) and (H22-mim)8[Mo4O4(μ2-S)4(d/l-tart)2]2·4H2O (d-2/l-2; H2-mim = 2-methylimidazole), have been isolated in reduced media and well characterized. These enantiomers are observed to finish self-assemblies with single chiral configurations. Structural analyses indicate that tartrates adopt different coordination modes with α-carboxy and/or α-alkoxy groups in 1 and 2, which are further completed with nitrogen-containing ligands. There are two types of micropores that exist in 1 and 2, separately, which are all formed by the isolated molecules themselves. The significant roles of hydrogen bonding among lattice molecules, tartrates, and multi-azoles are suggested, where 1 and 2 exhibited interesting supramolecular networks only through intramolecular self-sorts. Adsorption tests show that 1 has good affinities toward CO2 and O2, while 2 is the most potential O2 adsorbent compared with other common gases CO2, H2, CH4, and N2 under different pressures. In addition, IR, UV-vis, CD (circular dichroism), and solid-state 13C NMR spectroscopies have demonstrated the special chemical properties of these novel molybdenum d/l-tartrates.
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Affiliation(s)
- Lan Deng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhao-Hui Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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11
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Sutton A, Melag L, Sadiq MM, Hill MR. Capture, storage, and release of Oxygen by Metal‐Organic Frameworks (MOFs) – a review. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ashley Sutton
- CSIRO: Commonwealth Scientific and Industrial Research Organisation Manufacturing Private Bag 33 3169 Clayton South MDC AUSTRALIA
| | - Leena Melag
- Monash University Department of Chemical Engineering AUSTRALIA
| | - M. Munir Sadiq
- Monash University Department of Chemical Engineering AUSTRALIA
| | - Matthew R. Hill
- CSIRO: Commonwealth Scientific and Industrial Research Organisation Manufacturing AUSTRALIA
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12
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Wang K, Li Y, Xie LH, Li X, Li JR. Construction and application of base-stable MOFs: a critical review. Chem Soc Rev 2022; 51:6417-6441. [PMID: 35702993 DOI: 10.1039/d1cs00891a] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Metal-organic frameworks (MOFs) are a new class of porous crystalline materials constructed from organic ligands and metal ions/clusters. Owing to their unique advantages, they have attracted more and more attention in recent years and numerous studies have revealed their great potential in various applications. Many important applications of MOFs inevitably involve harsh alkaline operational environments. To achieve high performance and long cycling life in these applications, high stability of MOFs against bases is necessary. Therefore, the construction of base-stable MOFs has become a critical research direction in the MOF field. This review gives a historic summary of the development of base-stable MOFs in the last few years. The key factors that can determine the robustness of MOFs under basic conditions are analyzed. We also demonstrate the exciting achievements that have been made by utilizing base-stable MOFs in different applications. In the end, we discuss major challenges for the further development of base-stable MOFs. Some possible methods to address these problems are presented.
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Affiliation(s)
- Kecheng Wang
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China.
| | - Yaping Li
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China. .,School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
| | - Lin-Hua Xie
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China.
| | - Xiangyu Li
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China.
| | - Jian-Rong Li
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China.
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13
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Saiz F, Bernasconi L. Catalytic properties of the ferryl ion in the solid state: a computational review. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00200k] [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
This review summarises the last findings in the emerging field of heterogeneous catalytic oxidation of light alkanes by ferryl species supported on solid-state systems such as the conversion of methane into methanol by FeO-MOF74.
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Affiliation(s)
- Fernan Saiz
- ALBA Synchrotron, Carrer de la Llum 2-26, Cerdanyola del Valles 08290, Spain
| | - Leonardo Bernasconi
- Center for Research Computing and Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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14
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Oppenheim JJ, Bagi S, Chen T, Sun C, Yang L, Müller P, Román-Leshkov Y, Dincă M. Isolation of a Side-On V(III)-(η 2-O 2) through the Intermediacy of a Low-Valent V(II) in a Metal-Organic Framework. Inorg Chem 2021; 60:18205-18210. [PMID: 34813329 DOI: 10.1021/acs.inorgchem.1c02850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the isolation of vanadium(II) in a metal-organic framework (MOF) by the reaction of the chloride-capped secondary building unit in the all-vanadium(III) V-MIL-101 (1) with 1,4-bis(trimethylsilyl)-2,3,5,6-tetramethyl-1,4-dihydropyrazine. The reduced material, 2, has a secondary building unit with the formal composition [VIIV2III], with each metal ion presenting one open coordination site. Subsequent reaction with O2 yields a side-on η2 vanadium-superoxo species, 3. The MOF featuring V(III)-superoxo moieties exhibits a mild enhancement in the isosteric enthalpy of adsorption for methane compared to the parent V-MIL-101. We present this synthetic methodology as a potentially broad way to access low-valent open metal sites within MOFs without causing a loss of crystallinity or porosity. The low-valent sites can serve as isolable intermediates to access species otherwise inaccessible by direct synthesis.
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15
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Carsch KM, Iliescu A, McGillicuddy RD, Mason JA, Betley TA. Reversible Scavenging of Dioxygen from Air by a Copper Complex. J Am Chem Soc 2021; 143:18346-18352. [PMID: 34672573 DOI: 10.1021/jacs.1c10254] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report that exposing the dipyrrin complex (EMindL)Cu(N2) to air affords rapid, quantitative uptake of O2 in either solution or the solid-state to yield (EMindL)Cu(O2). The air and thermal stability of (EMindL)Cu(O2) is unparalleled in molecular copper-dioxygen coordination chemistry, attributable to the ligand flanking groups which preclude the [Cu(O2)]1+ core from degradation. Despite the apparent stability of (EMindL)Cu(O2), dioxygen binding is reversible over multiple cycles with competitive solvent exchange, thermal cycling, and redox manipulations. Additionally, rapid, catalytic oxidation of 1,2-diphenylhydrazine to azoarene with the generation of hydrogen peroxide is observed, through the intermittency of an observable (EMindL)Cu(H2O2) adduct. The design principles gleaned from this study can provide insight for the formation of new materials capable of reversible scavenging of O2 from air under ambient conditions with low-coordinate CuI sorbents.
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Affiliation(s)
- Kurtis M Carsch
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Andrei Iliescu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Ryan D McGillicuddy
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Jarad A Mason
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Theodore A Betley
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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16
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Cai Z, Tao W, Moore CE, Zhang S, Wade CR. Direct NO Reduction by a Biomimetic Iron(II) Pyrazolate MOF. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108095] [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)
- Zhongzheng Cai
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Wenjie Tao
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Shiyu Zhang
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Casey R. Wade
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
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17
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Cai Z, Tao W, Moore CE, Zhang S, Wade CR. Direct NO Reduction by a Biomimetic Iron(II) Pyrazolate MOF. Angew Chem Int Ed Engl 2021; 60:21221-21225. [PMID: 34342117 DOI: 10.1002/anie.202108095] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Indexed: 11/11/2022]
Abstract
A novel metal-organic framework (MOF) containing one-dimensional, Fe2+ chains bridged by dipyrazolate linkers and N,N-dimethylformamide (DMF) ligands has been synthesized. The unusual chain-type metal nodes feature accessible coordination sites on adjacent metal centers, resulting in motifs that are reminiscent of the active sites in non-heme diiron enzymes. The MOF facilitates direct reduction of nitric oxide (NO), producing nearly quantitative yields of nitrous oxide (N2 O) and emulating the reactivity of flavodiiron nitric oxide reductases (FNORs). The ferrous form of the MOF can be regenerated via a synthetic cycle involving reduction with cobaltocene (CoCp2 ) followed by reaction with trimethylsilyl triflate (TMSOTf).
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Affiliation(s)
- Zhongzheng Cai
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Wenjie Tao
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Shiyu Zhang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Casey R Wade
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
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18
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Shang Y, Cao Y, Xie Y, Zhang S, Cheng P. A 1D Mn-based coordination polymer with significant magnetocaloric effect. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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19
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Chuah CY, Goh K, Bae TH. Enhanced Performance of Carbon Molecular Sieve Membranes Incorporating Zeolite Nanocrystals for Air Separation. MEMBRANES 2021; 11:membranes11070489. [PMID: 34210089 PMCID: PMC8304111 DOI: 10.3390/membranes11070489] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 06/25/2021] [Accepted: 06/28/2021] [Indexed: 11/16/2022]
Abstract
Three different zeolite nanocrystals (SAPO-34, PS-MFI and ETS-10) were incorporated into the polymer matrix (Matrimid® 5218) as polymer precursors, with the aim of fabricating mixed-matrix carbon molecular sieve membranes (CMSMs). These membranes are investigated for their potential for air separation process. Based on our gas permeation results, incorporating porous materials is feasible to improve O2 permeability, owing to the creation of additional porosities in the resulting mixed-matrix CMSMs. Owing to this, the performance of the CMSM with 30 wt% PS-MFI loading is able to surpass the upper bound limit. This study demonstrates the feasibility of zeolite nanocrystals in improving O2/N2 separation performance in CMSMs.
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Affiliation(s)
- Chong Yang Chuah
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Singapore 637141, Singapore; (C.Y.C.); (K.G.)
| | - Kunli Goh
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Singapore 637141, Singapore; (C.Y.C.); (K.G.)
| | - Tae-Hyun Bae
- Department of Chemical and Biomolecular Engineering (BK21 Four), Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
- Correspondence:
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20
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Deng L, Dong X, Zhou ZH. Intrinsic Molybdenum-Based POMOFs with Impressive Gas Adsorptions and Photochromism. Chemistry 2021; 27:9643-9653. [PMID: 33780577 DOI: 10.1002/chem.202100745] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 11/06/2022]
Abstract
Novel molybdenum(VI/V) POM-based self-constructed frameworks [MoVI 12 O24 (μ2 -O)12 (trz)6 (H2 O)6 ] ⋅ 6Hma ⋅ 18H2 O (1, Htrz=1H-1,2,3-triazole, ma=methylamine), [MoVI 7 O14 (μ2 -O)8 (trz)5 (H2 O)] ⋅ 7Hma ⋅ 5H2 O (2), Na3 [MoV 6 O6 (μ2 -O)9 (Htrz)3 (trz)3 ] ⋅ 7.5H2 O (3) and [MoV 8 O8 (μ2 -O)12 (Htrz)8 ] ⋅ 30H2 O (4) have been covalently decorated with tri-coordinated deprotonated/protonated 1,2,3-triazoles. Channels with an inner diameter of 7.5 Å were found in 1, whereas a tunnel composed of stacking molecules with an inner diameter of 4.1 Å along the b-axis exists in 2; it is occupied by free disordered methylamines, showing selective adsorption of O2 and CO2 at 25 °C. Obvious downfield shifts were observed by 13 C NMR spectroscopies for methylamines inside the confined channels in 1 and 2. There are diversified pores in 3 and 4, which are formed by the molecules themselves and intermolecular accumulations. Adsorption tests indicate that 3 and 4 are fine adsorption materials for CH4 and CO2 under low pressure that rely on the environments built by the POMs. Correspondingly, 1 and 2 display reversible photoresponsive thermochromism that is subtlety influenced by the channels. The polyoxometalate organic frameworks (POMOFs) with multiple functional adsorptions are easy to assemble. Their photo-/thermoresponse properties offer a new pathway for the self-constructions of one-off hybrid materials that possess the good properties of both POMs and MOFs.
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Affiliation(s)
- Lan Deng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P. R. China
| | - Xin Dong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P. R. China
| | - Zhao-Hui Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P. R. China
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21
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Martin CR, Leith GA, Shustova NB. Beyond structural motifs: the frontier of actinide-containing metal-organic frameworks. Chem Sci 2021; 12:7214-7230. [PMID: 34163816 PMCID: PMC8171348 DOI: 10.1039/d1sc01827b] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/13/2021] [Indexed: 12/13/2022] Open
Abstract
In this perspective, we feature recent advances in the field of actinide-containing metal-organic frameworks (An-MOFs) with a main focus on their electronic, catalytic, photophysical, and sorption properties. This discussion deviates from a strictly crystallographic analysis of An-MOFs, reported in several reviews, or synthesis of novel structural motifs, and instead delves into the remarkable potential of An-MOFs for evolving the nuclear waste administration sector. Currently, the An-MOF field is dominated by thorium- and uranium-containing structures, with only a few reports on transuranic frameworks. However, some of the reported properties in the field of An-MOFs foreshadow potential implementation of these materials and are the main focus of this report. Thus, this perspective intends to provide a glimpse into the challenges, triumphs, and future directions of An-MOFs in sectors ranging from the traditional realm of gas sorption and separation to recently emerging areas such as electronics and photophysics.
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Affiliation(s)
- Corey R Martin
- Department of Chemistry and Biochemistry, University of South Carolina Columbia South Carolina 29208 USA
| | - Gabrielle A Leith
- Department of Chemistry and Biochemistry, University of South Carolina Columbia South Carolina 29208 USA
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina Columbia South Carolina 29208 USA
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22
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Biggins N, Ziebel ME, Gonzalez MI, Long JR. Crystallographic characterization of the metal-organic framework Fe 2(bdp) 3 upon reductive cation insertion. Chem Sci 2020; 11:9173-9180. [PMID: 34123166 PMCID: PMC8163410 DOI: 10.1039/d0sc03383a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Precisely locating extra-framework cations in anionic metal–organic framework compounds remains a long-standing, yet crucial, challenge for elucidating structure–performance relationships in functional materials. Single-crystal X-ray diffraction is one of the most powerful approaches for this task, but single crystals of frameworks often degrade when subjected to post-synthetic metalation or reduction. Here, we demonstrate the growth of sizable single crystals of the robust metal–organic framework Fe2(bdp)3 (bdp2− = benzene-1,4-dipyrazolate) and employ single-crystal-to-single-crystal chemical reductions to access the solvated framework materials A2Fe2(bdp)3·yTHF (A = Li+, Na+, K+). X-ray diffraction analysis of the sodium and potassium congeners reveals that the cations are located near the center of the triangular framework channels and are stabilized by weak cation–π interactions with the framework ligands. Freeze-drying with benzene enables isolation of activated single crystals of Na0.5Fe2(bdp)3 and Li2Fe2(bdp)3 and the first structural characterization of activated metal–organic frameworks wherein extra-framework alkali metal cations are also structurally located. Comparison of the solvated and activated sodium-containing structures reveals that the cation positions differ in the two materials, likely due to cation migration that occurs upon solvent removal to maximize stabilizing cation–π interactions. Hydrogen adsorption data indicate that these cation–framework interactions are sufficient to diminish the effective cationic charge, leading to little or no enhancement in gas uptake relative to Fe2(bdp)3. In contrast, Mg0.85Fe2(bdp)3 exhibits enhanced H2 affinity and capacity over the non-reduced parent material. This observation shows that increasing the charge density of the pore-residing cation serves to compensate for charge dampening effects resulting from cation–framework interactions and thereby promotes stronger cation–H2 interactions. Single-crystal X-ray diffraction reveals structural influences on gas adsorption properties in anionic metal–organic frameworks.![]()
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Affiliation(s)
- Naomi Biggins
- Department of Chemistry, University of California Berkeley California 94720 USA .,Materials Sciences Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
| | - Michael E Ziebel
- Department of Chemistry, University of California Berkeley California 94720 USA .,Materials Sciences Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
| | - Miguel I Gonzalez
- Department of Chemistry, University of California Berkeley California 94720 USA
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley California 94720 USA .,Department of Chemical and Biomolecular Engineering, University of California Berkeley California 94720 USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
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