1
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Chanda A, Mandal SK. A Multivariate 2D Metal-Organic Framework with Open Metal Sites for Catalytic CO 2 Cycloaddition and Cyanosilylation Reactions. Inorg Chem 2024; 63:5598-5610. [PMID: 38478680 DOI: 10.1021/acs.inorgchem.3c04559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
This work reports the synthesis of a dual functional 2D framework, {[Zn2(4-tpom)2(oxdz)2]·4H2O}n (1), at room temperature, where a bent dicarboxylate, oxdz2- (4,4'-(1,3,4-oxadiazole-2,5-diyl)dibenzoate), and a neutral flexible N-donor linker, 4-tpom (tetrakis(4-pyridyloxymethylene)methane), are utilized. Its single-crystal X-ray analysis indicated a 2-fold interpenetrated 2D framework having tetracoordinated Zn(II) centers and dangling pyridyl groups. Its further characterization was carried out with elemental microanalysis, FTIR spectroscopy, TG analysis, and powder X-ray diffraction. The tetracoordinated Zn(II) centers as active Lewis acidic sites and the N atoms of 4-tpom as Lewis basic sites in 1 are explored for its functioning as a heterogeneous catalyst in two important reactions, (i) cycloaddition of CO2 with various epoxides and (ii) cyanosilylation reaction under solvent-free conditions. We could successfully show the cycloaddition of styrene oxide with CO2 (99% conversion) under balloon pressure with low catalyst (0.2-0.3 mol %) and cocatalyst (0.5-0.75 mol %) loadings, which is otherwise difficult to achieve. It was observed that all the substrates (aromatic and aliphatic), irrespective of their sizes, showed conversion percentage >99%. In the cyanosilylation reaction, a conversion of 96% was obtained with 1.5 mol % of 1 at room temperature for 12 h. This framework emerged as an excellent recyclable catalyst for both the reactions.
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Affiliation(s)
- Alokananda Chanda
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Sanjay K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
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2
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Xiao C, Tian J, Chen Q, Hong M. Water-stable metal-organic frameworks (MOFs): rational construction and carbon dioxide capture. Chem Sci 2024; 15:1570-1610. [PMID: 38303941 PMCID: PMC10829030 DOI: 10.1039/d3sc06076d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/03/2024] [Indexed: 02/03/2024] Open
Abstract
Metal-organic frameworks (MOFs) are considered to be a promising porous material due to their excellent porosity and chemical tailorability. However, due to the relatively weak strength of coordination bonds, the stability (e.g., water stability) of MOFs is usually poor, which severely inhibits their practical applications. To prepare water-stable MOFs, several important strategies such as increasing the bonding strength of building units and introducing hydrophobic units have been proposed, and many MOFs with excellent water stability have been prepared. Carbon dioxide not only causes a range of climate and health problems but also is a by-product of some important chemicals (e.g., natural gas). Due to their excellent adsorption performances, MOFs are considered as a promising adsorbent that can capture carbon dioxide efficiently and energetically, and many water-stable MOFs have been used to capture carbon dioxide in various scenarios, including flue gas decarbonization, direct air capture, and purified crude natural gas. In this review, we first introduce the design and synthesis of water-stable MOFs and then describe their applications in carbon dioxide capture, and finally provide some personal comments on the challenges facing these areas.
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Affiliation(s)
- Cao Xiao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jindou Tian
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
| | - Qihui Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Maochun Hong
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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3
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Zhang L, Lin S, Liu Y, Zeng X, You J, Xiao T, Feng Y, He Z, Chen S, Hua N, Ye X, Wei ZW, Chen CX. Optimized Pore Nanospace through the Construction of a Cagelike Metal-Organic Framework for CO 2/N 2 Separation. Inorg Chem 2023; 62:8058-8063. [PMID: 37172273 DOI: 10.1021/acs.inorgchem.3c01055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The development of metal-organic framework (MOF) adsorbents with a potential molecule sieving effect for CO2 capture and separation from flue gas is of critical importance for reducing the CO2 emissions to the atmosphere yet challenging. Herein, a cagelike MOF with a suitable cage window size falling between CO2 and N2 and the cavity has been constructed to evaluate its CO2/N2 separation performance. It is noteworthy that the introduction of coordinated dimethylamine (DMA) and N,N'-dimethylformamide (DMF) molecules not only significantly reduces the cage window size but also enhances the framework-CO2 interaction via C-H···O hydrogen bonds, as proven by molecular modeling, thus leading to an improved CO2 separation performance. Moreover, transient breakthrough experiments corroborate the efficient CO2/N2 separation, revealing that the introduction of DMA and DMF molecules plays a vital role in the separation of a CO2/N2 gas mixture.
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Affiliation(s)
- Lei Zhang
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Sihan Lin
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Yupeng Liu
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Xiayun Zeng
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Jianjun You
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Taotao Xiao
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Yongjie Feng
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Ziyu He
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Song Chen
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Nengbin Hua
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Xiaoyun Ye
- College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Zhang-Wen Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Cheng-Xia Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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4
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Mohan B, Kumari R, Singh G, Singh K, Pombeiro AJL, Yang X, Ren P. Covalent organic frameworks (COFs) and metal-organic frameworks (MOFs) as electrochemical sensors for the efficient detection of pharmaceutical residues. ENVIRONMENT INTERNATIONAL 2023; 175:107928. [PMID: 37094512 DOI: 10.1016/j.envint.2023.107928] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/21/2023] [Accepted: 04/09/2023] [Indexed: 05/03/2023]
Abstract
Pharmaceutical residues are the undecomposed remains from drugs used in the medical and food industries. Due to their potential adverse effects on human health and natural ecosystems, they are of increasing worldwide concern. The acute detection of pharmaceutical residues can give a rapid examination of their quantity and then prevent them from further contamination. Herein, this study summarizes and discusses the most recent porous covalent-organic frameworks (COFs) and metal-organic frameworks (MOFs) for the electrochemical detection of various pharmaceutical residues. The review first introduces a brief overview of drug toxicity and its effects on living organisms. Subsequently, different porous materials and drug detection techniques are discussed with materials' properties and applications. Then the development of COFs and MOFs has been addressed with their structural properties and sensing applications. Further, the stability, reusability, and sustainability of MOFs/COFs are reviewed and discussed. Besides, COFs and MOFs' detection limits, linear ranges, the role of functionalities, and immobilized nanoparticles are analyzed and discussed. Lastly, this review summarized and discussed the MOF@COF composite as sensors, the fabrication strategies to enhance detection potential, and the current challenges in this area.
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Affiliation(s)
- Brij Mohan
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ritu Kumari
- Department of Chemistry, Kurukshetra University Kurukshetra -136119, India
| | - Gurjaspreet Singh
- Department of Chemistry and Centre of Advanced Studies Panjab University, Chandigarh-160014, India
| | - Kamal Singh
- Department of Physics, Chaudhary Bansi Lal University, Bhiwani, Haryana-127021, India
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Xuemei Yang
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Peng Ren
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
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Mohan B, Ma S, Kumar S, Yang Y, Ren P. Tactile Sensors: Hydroxyl Decorated Silver Metal-Organic Frameworks for Detecting Cr 2O 72-, MnO 4-, Humic Acid, and Fe 3+ Ions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17317-17323. [PMID: 36961965 DOI: 10.1021/acsami.2c22871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Anionic, acidic, and metal ions are common contaminants in water and cause serious concerns for human and aquatic life. With the goal of rapid detection of analytes, we herein design a new array of ligand 5-(4H-1,2,4-triazol-4-yl)pyridin-3-ol-linked silver coordinated metal-organic frameworks Ag-MOFs as a promising sensor for Cr2O72-, MnO4-, humic acid (HA), and Fe3+ ions down to the micro level. Furthermore, as evidenced by luminescence, excitation-emission matrix (EEM) spectroscopic, and PXRD measurements, designed metal-organic frameworks (MOFs) can be fast, stable, and reusable for analyte detection in water.
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Affiliation(s)
- Brij Mohan
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Shixuan Ma
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Sandeep Kumar
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Yang Yang
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Peng Ren
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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Template-Mediated Synthesis of Hierarchically Porous Metal–Organic Frameworks for Efficient CO2/N2 Separation. MATERIALS 2022; 15:ma15155292. [PMID: 35955227 PMCID: PMC9369960 DOI: 10.3390/ma15155292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022]
Abstract
Carbon dioxide (CO2) is generally unavoidable during the production of fuel gases such as hydrogen (H2) from steam reformation and syngas composed of carbon monoxide (CO) and hydrogen (H2). Efficient separation of CO2 from these gases is highly important to improve the energetic utilization efficiency and prevent poisoning during specific applications. Metal–organic frameworks (MOFs), featuring ordered porous frameworks, high surface areas and tunable pore structures, are emerging porous materials utilized as solid adsorbents for efficient CO2 capture and separation. Furthermore, the construction of hierarchical MOFs with micropores and mesopores could further promote the dynamic separation processes, accelerating the diffusion of gas flow and exposing more adsorptive pore surface. Herein, we report a simple, efficient, one-pot template-mediated strategy to fabricate a hierarchically porous CuBTC (CuBTC-Water, BTC = 1,3,5-benzenetricarboxylate) for CO2 separation, which demonstrates abundant mesopores and the superb dynamic separation ability of CO2/N2. Therefore, CuBTC-Water demonstrated a CO2 uptake of 180.529 cm3 g−1 at 273 K and 1 bar, and 94.147 cm3 g−1 at 298 K and 1 bar, with selectivity for CO2/N2 mixtures as high as 56.547 at 273 K, much higher than microporous CuBTC. This work opens up a novel avenue to facilely fabricate hierarchically porous MOFs through one-pot synthesis for efficient dynamic CO2 separation.
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Gupta V, Mandal SK. Effect of Unsaturated Metal Site Modulation in Highly Stable Microporous Materials on CO 2 Capture and Fixation. Inorg Chem 2022; 61:3086-3096. [PMID: 35135190 DOI: 10.1021/acs.inorgchem.1c03310] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We have designed and synthesized two unprecedented microporous three-dimensional metal-organic frameworks, {[Cd6(TPOM)3(L)6]·12DMF·3H2O}n (1) and {[Zn2(TPOM)(L)2]·2DMF·H2O}n (2), based on a flexible quadritopic ligand, tetrakis(4-pyridyloxymethylene)methane (TPOM), and a bent dicarboxylic acid, 4,4'-(dimethylsilanediyl)bis-benzoic acid (H2L). The networks of 1 and 2 share a 4-c uninodal net NbO topology but exhibit different metal environments due to coordination preferences of Cd(II) and Zn(II). The Cd(II) center in 1 is six-coordinated, whereas the Zn(II) center in 2 is only four-coordinated, making the latter an unsaturated metal center. Such modulation of coordination atmosphere of metal centers in MOFs with the same topology is possible due to diverse binding of the carboxylate groups of L2-. Both 1 and 2 have relatively high thermal stability and exhibit permanent porosity after the removal of guest solvent molecules based on variable temperature powder X-ray diffraction and gas adsorption analysis. These materials exhibit similar gas adsorption properties, especially highly selective CO2 uptake/capture over other gases (N2 and CH4). However, because of the presence of an unsaturated Lewis acidic metal site, 2 acts as a very efficient heterogeneous catalyst toward the chemical conversion of CO2 to cyclic carbonates under mild conditions, whereas 1 shows very less activity. This work provides experimental evidence for the postulate that an unsaturated metal site in MOFs enhances adsoprtion of CO2 and promotes its conversion via the Lewis-acid catalysis.
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Affiliation(s)
- Vijay Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Sanjay K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
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8
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Abstract
Carbon capture from large sources and ambient air is one of the most promising strategies to curb the deleterious effect of greenhouse gases. Among different technologies, CO2 adsorption has drawn widespread attention mostly because of its low energy requirements. Considering that water vapor is a ubiquitous component in air and almost all CO2-rich industrial gas streams, understanding its impact on CO2 adsorption is of critical importance. Owing to the large diversity of adsorbents, water plays many different roles from a severe inhibitor of CO2 adsorption to an excellent promoter. Water may also increase the rate of CO2 capture or have the opposite effect. In the presence of amine-containing adsorbents, water is even necessary for their long-term stability. The current contribution is a comprehensive review of the effects of water whether in the gas feed or as adsorbent moisture on CO2 adsorption. For convenience, we discuss the effect of water vapor on CO2 adsorption over four broadly defined groups of materials separately, namely (i) physical adsorbents, including carbons, zeolites and MOFs, (ii) amine-functionalized adsorbents, and (iii) reactive adsorbents, including metal carbonates and oxides. For each category, the effects of humidity level on CO2 uptake, selectivity, and adsorption kinetics under different operational conditions are discussed. Whenever possible, findings from different sources are compared, paying particular attention to both similarities and inconsistencies. For completeness, the effect of water on membrane CO2 separation is also discussed, albeit briefly.
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Affiliation(s)
- Joel M Kolle
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Mohammadreza Fayaz
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Abdelhamid Sayari
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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9
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Gonzalez-Nelson A, Joglekar C, van der Veen MA. Pillared cobalt metal-organic frameworks act as chromatic polarizers. Chem Commun (Camb) 2021; 57:1022-1025. [PMID: 33406176 DOI: 10.1039/d0cc07316d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ease with which molecular building blocks can be ordered in metal-organic frameworks is an invaluable asset for many potential applications. In this work, we exploit this inherent order to produce chromatic polarizers based on visible-light linear dichroism via cobalt paddlewheel chromophores.
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Affiliation(s)
- Adrian Gonzalez-Nelson
- Department of Chemical Engineering, Delft University of Technology, The Netherlands. and DPI, P. O. Box 92, 5600 AX Eindhoven, The Netherlands
| | - Chaitanya Joglekar
- Department of Chemical Engineering, Delft University of Technology, The Netherlands.
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Liu Y, Di Y, Qiao C, Liu M, Zhou C. A novel microporous metal–organic framework with Lewis basic sites and open O donor sites: Crystal structure and adsorption properties. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Feng PQ, Wu XQ, Guo ZQ, Wei XH, Wang T, Li XY. Co-MOFs with high selectivity and excellent sensitivity for distinguishing isomeric aromatic derivatives. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Liu J, Hang M, Wu D, Jin J, Cheng JG, Yang G, Wang YY. Fine-Tuning the Porosities of the Entangled Isostructural Zn(II)-Based Metal-Organic Frameworks with Active Sites by Introducing Different N-Auxiliary Ligands: Selective Gas Sorption and Efficient CO 2 Conversion. Inorg Chem 2020; 59:2450-2457. [PMID: 32003215 DOI: 10.1021/acs.inorgchem.9b03332] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Three new pairs of 2-fold interpenetrated and self-entangled three-dimensional isostructural porous metal-organic frameworks (MOFs), [Zn(L1)(x)0.5]·0.5H2O (x = bipy for 1, bpa for 2, and bpe for 3) and [Zn(L2)(x)0.5]·0.5H2O (x = bipy for 4, bpa for 5, and bpe for 6) [bipy = 4,4'-bipyridine, bpa = 1,2-bis(4-pyridyl)ethylene, and bpe = 1,2-bis(4-pyridyl)ethylene], have been created and fine-tuned via similar skeleton ligands 2-(imidazol-1-yl)terephthalic acid (H2L1) and 2-(1H-1,2,4-triazol-1-yl)terephthalic acid (H2L2) and N-auxiliary coligands with different linking groups. Interestingly, the porosities of the MOFs can be effectively increased via the insertion of -CH2CH2- or -CH═CH- spacers into the N-auxiliary bipy ligand. As a result, complexes 5 and 6 displayed highly enhanced CO2 uptake capacities. Furthermore, complex 5 also had a higher C2/C1 selectivity as well as great CO2 cycloaddition efficiency.
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Affiliation(s)
- Jiao Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
| | - Ming Hang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
| | - Dan Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
| | - Jing Jin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
| | - Jian-Guo Cheng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
| | - Guoping Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science , Northwest University , Xi'an 710127 , Shaanxi , P. R. China
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Laha B, Khullar S, Gogia A, Mandal SK. Effecting structural diversity in a series of Co(II)-organic frameworks by the interplay between rigidity of a dicarboxylate and flexibility of bis(tridentate) spanning ligands. Dalton Trans 2020; 49:12298-12310. [PMID: 32840539 DOI: 10.1039/d0dt02153a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In a one-pot self-assembly reaction of Co(OAc)2·4H2O, thiophene-2,5-dicarboxylic acid (H2tdc) and four different bis(tridentate) polypyridyl spanning ligands under ambient conditions, a series of structurally diverse metal-organic frameworks has been synthesised and characterized by single crystal X-ray diffraction: {[Co2(tdc)2(tpbn)(H2O)2]·solvent}n (solvent = 2H2O, 1; solvent = 2CH3OH, 2H2O, 1a), {[Co2(tdc)2(tphn)]·solvent}n (solvent = H2O, 2; solvent = CH3OH, 2.5H2O, 2a), {[Co2(tdc)2(tpchn)(H2O)2]·solvent}n (solvent = 5H2O, 3; solvent = C2H5OH, 2H2O, 3a), and {[Co2(tdc)2(tpxn)]·solvent}n (solvent = 6H2O, 4; when no solvent, 4a), where tpbn (N,N',N'',N'''-tetrakis(2-pyridylmethyl)-1,4-diaminobutane), tphn = N,N',N'',N'''-tetrakis(2-pyridylmethyl)-1,6-diaminohexane, tpchn = N,N'-(cyclohexane-1,4-diylbis(methylene))bis(1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)methanamine) and tpxn = N,N'-(1,4-phenylenebis(methylene))bis(1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)methanamine). There is a profound effect of the nature of spacer between the alkyl nitrogens in the spanning ligands (flexible vs. semiflexible) on the molecular structures of 1a-4a. The notable differences are (a) the binding mode of the tridentate part of polypyridyl ligands to the Co(ii) center is facial in 1a, 3a and 4a but meridional in 2a, (b) the Co(ii) centers in 1a-3a are hexacoordinated (with a coordinated water in 1a and 3a) but are pentacoordinated in 4a, and (c) the binding mode of tdc linker is bis(monodentate) in 1a, 3a and 4a but chelated in one end and monodentate in the other end in 2a. Thus, the overall framework structure of 1a, 2a, 3a and 4a is cis-decalin type 2D polymer, ladder-shaped 1D polymer, hexagonal 2D net and cis-decalin type 2D polymer, respectively. Their thermal stabilities have been established by thermogravimetric analysis (TGA). The presence of an unsaturated metal center in 4 has provided us an opportunity for its use as an efficient Lewis acid catalyst for the Knoevenagel condensation reaction of malononitrile with various aldehydes (100% conversion in 60 minutes with 2 mol% catalyst in methanol).
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Affiliation(s)
- Biswajit Laha
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India.
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14
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Verma G, Butikofer S, Kumar S, Ma S. Regulation of the Degree of Interpenetration in Metal–Organic Frameworks. Top Curr Chem (Cham) 2019; 378:4. [DOI: 10.1007/s41061-019-0268-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 11/16/2019] [Indexed: 01/05/2023]
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15
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Duan X, Lv R, Li S, Tang J, Ge J, Zhao D. Two -COOH Decorated Anionic Metal-organic Frameworks with Open Cu2+
Sites Afforded Highly C2
H2
/CO2
and C2
H2
/CH4
Separation and Removal of Organic Dyes. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900111] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xing Duan
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
- State Key Lab of Silicon Materials; Zhejiang University; 310027 Hangzhou P. R. China
| | - Ran Lv
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Sha Li
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Jiaxuan Tang
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Jingyuan Ge
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Dian Zhao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua P. R. China
- State Key Lab of Silicon Materials; Zhejiang University; 310027 Hangzhou P. R. China
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