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Sugamata K, Yamada S, Yanagisawa D, Amanokura N, Shirai A, Minoura M. Zn-Based Metal-Organic Frameworks Using Triptycene Hexacarboxylate Ligands: Synthesis, Structure, and Gas-Sorption Properties. Chemistry 2023; 29:e202302080. [PMID: 37589440 DOI: 10.1002/chem.202302080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/18/2023]
Abstract
A series of metal-organic frameworks (MOFs) based on zinc ions and two triptycene ligands of different size have been synthesized under solvothermal conditions. Structural analyses revealed that they are isostructural 3D-network MOFs. The high porosity and thermal stability of these MOFs can be attributed to the highly rigid triptycene-based ligands. Their BET specific surface areas depend on the size of the triptycene ligands. In contrast to these surface-area data, the H2 and CO2 adsorption of these MOFs is larger for MOFs with small pores. Consequently, we introduced functional groups to the bridge-head position of the triptycene ligands and investigated their effect on the gas-sorption properties. The results unveiled the role of the functional groups in the specific CO2 binding via an induced interaction between adsorbates and the functional groups. Excellent H2 and CO2 properties in these MOFs were achieved in the absence of open metal sites.
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Affiliation(s)
- Koh Sugamata
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Shoko Yamada
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Daichi Yanagisawa
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Natsuki Amanokura
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
- Nippon Soda Co. Ltd., 2-2-1 Ohtemachi, Chiyoda-ku, Tokyo, 100-8165, Japan
| | - Akihiro Shirai
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
- Nippon Soda Co. Ltd., 2-2-1 Ohtemachi, Chiyoda-ku, Tokyo, 100-8165, Japan
| | - Mao Minoura
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
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Chatterjee N, Oliver CL. Ligated Solvent Influence on Interpenetration and Carbon Dioxide and Water Sorption Hysteresis in a System of 2D Isoreticular MOFs. Inorg Chem 2022; 61:3516-3526. [PMID: 35175770 DOI: 10.1021/acs.inorgchem.1c03489] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Four two-dimensional (2D), fluorinated metal-organic frameworks (MOFs), [Cu(hfipbb)(DMF)]n·0.5(DMF)n (1), [Cu(hfipbb)(DEF)]n (2), [Cu3(hfipbb)3(DMA)3]n·6(DMA)n·2(H2O)n (3), and [Cu2(hfipbb)2(DEA)2]n·2(DEA)n·2(H2O)n (4), have been synthesized where hfipbb = 4,4'-(hexafluoroisopropylidene)bis(benzoate), DMF = N,N'-dimethylformamide, DEF = N,N'-diethylformamide, DMA = N,N'-dimethylacetamide, and DEA = N,N'-diethylacetamide. The choice of either a formamide or acetamide solvent ligand leads to a 2D, doubly interpenetrated (1 and 2) or noninterpenetrated (3 and 4) MOF structure. Despite their lower potential void spaces, the doubly interpenetrated structures have superior carbon dioxide and hydrogen sorption properties. Their 195 K CO2 sorption isotherms display inflection points, followed by ∼3-fold increases in their sorption capacities and very large extents of hysteretic behavior. This shows that small changes in the identity of the ligated solvent ligand can affect whether the resulting MOF is interpenetrated or noninterpenetrated and so drastically affect the sorption properties. In addition, the activated phase of a fifth MOF, synthesized through DMF ligand exchange with water in 1 (1W), does not display an inflection point and subsequent increased CO2 sorption at 195 K, despite having the same degree of interpenetration, showing that even more subtle differences in the desolvated phases can lead to marked differences in their sorption behavior.
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Affiliation(s)
- Nabanita Chatterjee
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
| | - Clive L Oliver
- Department of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa
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Ndamyabera CA, Chatterjee N, Oliver CL, Bourne SA. Robust pyridylbenzoate metal–organic frameworks as sorbents for volatile solvents and gases. CrystEngComm 2021. [DOI: 10.1039/d1ce01052b] [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
Double-walled pyridylbenzoate MOFs display an order/disorder phase transition on solvation/desolvation. This allows the MOFs to retain structural integrity over multiple sorption cycles.
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Affiliation(s)
- Christophe A. Ndamyabera
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Nabanita Chatterjee
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Clive L. Oliver
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
| | - Susan A. Bourne
- Centre for Supramolecular Chemistry Research, Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
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Gcwensa N, Oliver CL. Large Differences in Carbon Dioxide and Water Sorption Capabilities in a System of Closely Related Isoreticular Cd(II)-based Mixed-Ligand Metal-Organic Frameworks. Inorg Chem 2020; 59:13211-13222. [PMID: 32866377 DOI: 10.1021/acs.inorgchem.0c01533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report the synthesis of two isoreticular, mixed-ligand metal-organic frameworks (MOFs), [Cd(μ2-mia)(μ2-bpe)]n·n(DMF)0.5·n(H2O)0.5 (1) and [Cd(μ2-nia)(μ2-bpee)]n·nDMF (2), where mia = 5-methoxyisophthalate, nia = 5-nitroisophthalate, bpe = 1,2-bis(4-pyridyl)ethane, bpee = 1,2-bis(4-pyridyl)ethylene, and DMF = N,N'-dimethylformamide. Variable-temperature powder X-ray diffraction studies confirmed that both MOFs remain crystalline with activation at high temperatures. Variable-temperature single-crystal X-ray diffraction studies were performed on 1, 2, and a previously published, isoreticular structure, [Cd(μ2-nia)(μ2-bpe)1.5]n·nDMF0.84 (3). These studies show that upon desolvation that monocrystallinity is retained to significantly higher temperatures for 2 and 3 when compared to 1 for which only a partially desolvated crystal structure could be obtained. Carbon dioxide sorption is negligible for 1 at 195 and 298 K, while it is higher for 2 than 3 at 298 K and reversed at 195 K. Water vapor sorption increases in the order 1, 2, and 3. On the contrary, water liquid sorption was significantly higher for 1 when compared to 2. The variable-temperature structures of the (partially) desolvated forms of 1, 2, and 3 give some insight into the reasons for the remarkably different gas, vapor, and liquid sorption properties.
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Affiliation(s)
- Nolwazi Gcwensa
- University of Cape Town, Rondebosch, Cape Town 7700, South Africa
| | - Clive L Oliver
- University of Cape Town, Rondebosch, Cape Town 7700, South Africa
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Gupta M, Chatterjee N, De D, Saha R, Chattaraj PK, Oliver CL, Bharadwaj PK. Metal-Organic Frameworks of Cu(II) Constructed from Functionalized Ligands for High Capacity H 2 and CO 2 Gas Adsorption and Catalytic Studies. Inorg Chem 2020; 59:1810-1822. [PMID: 31965795 DOI: 10.1021/acs.inorgchem.9b03012] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Two Cu(II)-based metal-organic frameworks (MOFs) having paddle-wheel secondary building units (SBUs), namely, 1Me and 1ipr, were synthesized solvothermally using two new bent di-isophthalate ligands incorporating different substituents. The MOFs showed high porosity (BET surface area, 2191 m2/g for 1Me and 1402 m2/g for 1ipr). For 1Me, very high CO2 adsorption (98.5 wt % at 195 K, 42.9 wt % at 273 K, 23.3 wt % at 298 K) at 1 bar was found, while for 1ipr, it was significantly less (14.3 wt % at 298 K and 1 bar, 54.4 wt % at 298 K at 50 bar). 1Me exhibited H2 uptake of 3.2 wt % at 77 K and 1 bar of pressure, which compares well with other benchmark MOFs. For 1ipr, the H2 uptake was found to be 2.54 wt % under similar experimental conditions. The significant adsorption of H2 and CO2 for 1Me could be due to the presence of micropores as well as unsaturated metal sites in these MOFs besides the presence of substituents that interact with the gas molecules. The experimental adsorption behavior of the MOFs could be justified by theoretical calculations. Additionally, catalytic conversions of CO2 and CS2 into useful chemicals like cyclic carbonates, cyclic trithiocarbonates, and cyclic dithiocarbonates could be achieved.
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Affiliation(s)
- Mayank Gupta
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Nabanita Chatterjee
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry , University of Cape Town , Cape Town , South Africa
| | - Dinesh De
- Department of Basic Science, Vishwavidyalaya Engineering College, Lakhanpur , Sarguja University , Lakhanpur , Chhattisgarh - 497116 , India
| | - Ranajit Saha
- Department of Chemistry and Center for Theoretical Studies , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
| | - Pratim Kumar Chattaraj
- Department of Chemistry and Center for Theoretical Studies , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India.,Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
| | - Clive L Oliver
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry , University of Cape Town , Cape Town , South Africa
| | - Parimal K Bharadwaj
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India.,Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
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Yi L, Guo F. Rational Construction of a 2D PbII Coordination Polymer as a Sensitive Turn-Off Fluorescent Switch for Fe3+, Cr2O72−, and NFT. Aust J Chem 2020. [DOI: 10.1071/ch19416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A PbII coordination polymer, [Pb(L)2]n (denoted as complex 1), was generated successfully by the assembly process of PbII and 5-fluoronicotinic acid (HL) under solvothermal synthesis. The obtained 1 was characterised by element analysis, powder and single-crystal X-ray diffraction, thermogravimetric analysis, and UV-vis and fluorescent spectroscopy. The resultant 1 has an outstanding application as a fluorescent sensor for Fe3+, Cr2O72−, and NFT with excellent selectivity and reusability.
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Miao C. Design and construction of a 2D PbII coordination polymer as a multi-response luminescent sensor for Fe3+, Cr2O72−, and TNP. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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