1
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Zhu ZC, Liu ST, Li ZR, Xie T, Zhang CH, Ke H, Liao JZ. Mechanical Grinding-Induced Intermolecular Charge Transfer for Near-Infrared Photothermal Conversion. Inorg Chem 2024; 63:16799-16806. [PMID: 39193871 DOI: 10.1021/acs.inorgchem.4c02467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
In this study, charge-transfer-type compounds comprising synthesized naphthalenediimide derivative (H4NDISA) or its Pb-based coordination polymer (Pb-NDISA) and suitable primary or secondary amine organic molecules were prepared by the solvent-free mechanical grinding method. The coloration phenomenon arising from charge transfer during grinding serves as a discriminative tool for distinguishing various organic guest molecules. The porous structure of Pb-NDISA crystals facilitates the infiltration of guest molecules and contributes to the preservation of the intermolecular charge transfer state. Moreover, the intermolecular charge transfer induced by grinding exhibits remarkable stability in an ambient atmosphere, underscoring the pivotal role of well-ordered molecules in the mechanical grinding procedure. This mechanochromic phenomenon holds promise for the detection and sensing of organic molecules, while the exceptional charge-transfer absorption characteristics offer the potential for efficient near-infrared photothermal conversion.
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Affiliation(s)
- Zi-Chen Zhu
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
| | - Su-Ting Liu
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
| | - Zi-Ru Li
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
| | - Tong Xie
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
| | - Cai-Hua Zhang
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
| | - Hua Ke
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
| | - Jian-Zhen Liao
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, (PR China)
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (PR China)
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2
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Li XL, Niu KK, Yu S, Liu H, Xing LB. A supramolecular naphthalenediimide radical anion through host-guest interactions for photooxidation of alkylarenes to carbonyls. Chem Commun (Camb) 2024; 60:8924-8927. [PMID: 39092786 DOI: 10.1039/d4cc02374a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
A supramolecular naphthalenediimide radical anion was developed through host-guest interactions between NDI and cucurbit[7]uril (CB[7]), which can be greatly promoted in the presence of chloride ions to obtain Cl˙ and NDI-2CB[7]˙-. Under the synergistic action of Cl˙ as a hydrogen atom transfer (HAT) agent and NDI-2CB[7]˙- transferring electrons to O2 to produce O2˙-, the photocatalytic oxidation reactions of alkylarenes to carbonyls can be realized with universal applicability.
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Affiliation(s)
- Xin-Long Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Kai-Kai Niu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Shengsheng Yu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Hui Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Ling-Bao Xing
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
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3
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Liu X, Zhang H, Liu C, Wang Z, Zhang X, Yu H, Zhao Y, Li MJ, Li Y, He YL, He G. Commercializable Naphthalene Diimide Anolytes for Neutral Aqueous Organic Redox Flow Batteries. Angew Chem Int Ed Engl 2024; 63:e202405427. [PMID: 38603586 DOI: 10.1002/anie.202405427] [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: 03/19/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/13/2024]
Abstract
Neutral aqueous organic redox flow batteries (AORFBs) hold the potential to facilitate the transition of renewable energy sources from auxiliary to primary energy, the commercial production of anolyte materials still suffers from insufficient performance of high-concentration and the high cost of the preparation problem. To overcome these challenges, this study provides a hydrothermal synthesis methodology and introduces the charged functional groups into hydrophobic naphthalene diimide cores, and prepares a series of high-performance naphthalene diimide anolytes. Under the synergistic effect of π-π stacking and H-bonding networks, the naphthalene diimide exhibits excellent structural stability and the highest water solubility (1.85 M for dex-NDI) reported to date. By employing the hydrothermal method, low-cost naphthalene diimides are successfully synthesized on a hundred-gram scale of $0.16 g-1 ($2.43 Ah-1), which is also the lowest price reported to date. The constructed full battery achieves a high electron concentration of 2.4 M, a high capacity of 54.4 Ah L-1, and a power density of 318 mW cm-2 with no significant capacity decay observed during long-duration cycling. These findings provide crucial support for the commercialization of AORFBs and pave the way for revolutionary developments in neutral AORFBs.
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Affiliation(s)
- Xu Liu
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Heng Zhang
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Chenjing Liu
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Zengrong Wang
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Xuri Zhang
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Haiyan Yu
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Yujie Zhao
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
| | - Ming-Jia Li
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yinshi Li
- National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Ya-Ling He
- National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Gang He
- Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Photoelectromagnetic Functional Materials International Science and Technology Cooperation Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, China
- National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
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4
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Wang HP, Liu JC, Li SF, Meng YR, Zhang G, Su J. Square-planar Tetranuclear Cluster-based Alkaline Earth Metal-organic Frameworks with Enhanced Proton Conductivity. Chem Asian J 2024:e202400175. [PMID: 38630005 DOI: 10.1002/asia.202400175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/08/2024] [Indexed: 05/15/2024]
Abstract
Alkaline earth (AE) metal complexes have garnered significant interest in various functional fields due to their nontoxicity, low density, and low cost. However, there is a lack of systematic investigation into the structural characteristics and physical properties of AE-metal-organic frameworks (MOFs). In this research, we synthesized isostructural MOFs consisting of AE4(μ4-Cl) clusters bridged by benzo-(1,2;3,4;5,6)-tris(thiophene-2'-carboxylic acid) (BTTC3-) ligands. The resulting structure forms a truncated octahedral cage denoted as [AE4(m4-Cl)]6(BTTC)8, which further linked to a porous three-dimensional framework. Among the investigated AE ions (Ca, Sr, and Ba), the Ca4-MOF demonstrated good chemical stability in water compared to Sr4-MOF and Ba4-MOF. The N2 adsorption and solid-state UV-vis-NIR absorption behaviors were evaluated for all AE4-MOFs, showing similar trends among the different metal ions. Additionally, the proton conduction study revealed that the Ca4-MOF exhibited ultra-high proton conductivity, reaching 3.52×10-2 S cm-1 at 343 K and 98 % RH. Notably, the introduction of LiCl via guest exchange resulted in an improved proton conduction of up to 6.36×10-2 S cm-1 under similar conditions in the modified LiCl@Ca4-MOF. The findings shed light on the regulation of physical properties and proton conductivity of AE-MOFs, providing valuable insights for their potential applications in various fields.
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Affiliation(s)
- Hui-Pu Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China
| | - Jin-Cheng Liu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China
| | - Shu-Fan Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China
| | - Ya-Ru Meng
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China
| | - Gen Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China
| | - Jian Su
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China
- State Key Laboratory of Coordination Chemistry, Nanjing University, 210023, Nanjing, P. R. China
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5
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Chen Q, Gu Y, Fu H, Luo R, Zhu D, Dong P, Ma J, Ju H, Lei J. Ultrastable Anion Radicals in Ligand-Dimerized Frameworks for Self-Accumulated Electrochemiluminescence. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18194-18201. [PMID: 38532607 DOI: 10.1021/acsami.4c01412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Electrochemiluminescence (ECL) is a light-emitting process that occurs via an annihilation reaction among energetic radical intermediates, whose stabilities determine the ECL efficiency. In this study, a ligand-dimerized metal-organic framework (MOF) with ultrastable anion radical is designed as an efficient nanoemitter for self-accumulated ECL. Due to the nonplanar structure of perylene diimide (PDI) derivate, two PDI ligands in the framework form a J-dimer unit with a vertical distance of ∼5.74 Å. In cathodic scanning, the ligand-dimerized MOF demonstrates three-step ECL emissions with a gradual increase in ECL intensity. Unlike the decrease in the PDI ligand, the self-accumulated ECL of the MOF was observed with 16.8-fold enhancement due to the excellent stability of radical intermediates in frameworks. Electron paramagnetic resonance demonstrated the ultrastability of free radicals in the designed frameworks, with 82.2% remaining even after one month of storage. Density functional theory calculations supported that PDI dimerization was energetically favorable upon successive electron injection. Moreover, the ECL wavelength is 610 nm, corresponding to the emission of excited dimers. The radical-stabilized reticular nanoemitters open up a new platform for decoding the fundamentals of self-accumulated ECL systems.
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Affiliation(s)
- Qizhou Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Yuming Gu
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Haomin Fu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Rengan Luo
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Da Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Pengfei Dong
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Jing Ma
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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6
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Park S, Lee J, Kim B, Jung CY, Bae SE, Kang J, Moon D, Park J. Radical-Driven Crystal-Amorphous-Crystal Transition of a Metal-Organic Framework. J Am Chem Soc 2024; 146:9293-9301. [PMID: 38516847 DOI: 10.1021/jacs.4c01040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Self-assembly-based structural transition has been explored for various applications, including molecular machines, sensors, and drug delivery. In this study, we developed new redox-active metal-organic frameworks (MOFs) called DGIST-10 series that comprise π-acidic 1,4,5,8-naphthalenediimide (NDI)-based ligands and Ni2+ ions, aiming to boost ligand-self-assembly-driven structural transition and study the involved mechanism. Notably, during the synthesis of the MOFs, a single-crystal-amorphous-single-crystal structural transition occurred within the MOFs upon radical formation, which was ascribed to the fact that radicals prefer spin-pairing or through-space electron delocalization by π-orbital overlap. The radical-formation-induced structural transitions were further confirmed by the postsynthetic solvothermal treatment of isolated nonradical MOF crystals. Notably, the transient amorphous phase without morphological disintegration was clearly observed, contributing to the seminal structural change of the MOF. We believe that this unprecedented structural transition triggered by the ligand self-assembly magnifies the structural flexibility and diversity of MOFs, which is one of the pivotal aspects of MOFs.
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Affiliation(s)
- Seonghun Park
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Juhyung Lee
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Bongkyeom Kim
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Chan-Yong Jung
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
| | - Sang-Eun Bae
- Nuclear Chemistry Technology Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
| | - Joongoo Kang
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory/POSTECH, Pohang 37673, Republic of Korea
| | - Jinhee Park
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
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7
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Hu H, Zhang YY, Ma H, Yang Y, Mei S, Li J, Xu JF, Zhang X. A Supramolecular Naphthalene Diimide Radical Anion with Efficient NIR-II Photothermal Conversion for E. coli-Responsive Photothermal Therapy. Angew Chem Int Ed Engl 2023; 62:e202308513. [PMID: 37607898 DOI: 10.1002/anie.202308513] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/21/2023] [Accepted: 08/21/2023] [Indexed: 08/24/2023]
Abstract
We report a supramolecular naphthalene diimide (NDI) radical anion with efficient NIR-II photothermal conversion for E. coli-responsive photothermal therapy. The supramolecular radical anion (NDI-2CB[7])⋅- , which is obtained from the E. coli-induced in situ reduction of NDI-2CB[7] neutral complex, formed by the host-guest interaction between an NDI derivative and cucurbit[7]uril (CB[7]), exhibits unexpectedly strong NIR-II absorption and remarkable photothermal conversion capacity in aqueous solution. The NIR-II absorption is caused by the self-assembly of NDI radical anions to form supramolecular dimer radicals in aqueous solution, which is supported by theoretically predicted spectra. The (NDI-2CB[7])⋅- demonstrates excellent NIR-II photothermal antimicrobial activity (>99 %). This work provides a new approach for constructing NIR-II photothermal agents and non-contact treatments for bacterial infections.
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Affiliation(s)
- Hao Hu
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yang-Yang Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518005, China
| | - He Ma
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yuchong Yang
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Shan Mei
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jun Li
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518005, China
| | - Jiang-Fei Xu
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Xi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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8
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Abbas M, Maceda AM, Xiao Z, Zhou HC, Balkus KJ. Transformation of a copper-based metal-organic polyhedron into a mixed linker MOF for CO 2 capture. Dalton Trans 2023; 52:4415-4422. [PMID: 36916445 DOI: 10.1039/d2dt04162f] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
A new mixed linker metal-organic framework (MOF) has been synthesized from a copper-based metal-organic polyhedron (MOP-1) and 2,2'-bipyridine (2,2'-bipy). The CuMOF-Bipy with a formula of [Cu2(2,2'-bpy)2(m-BDC)2]n is comprised of a binuclear Cu(II) node coordinated to 2,2'-bipy, and isophthalic acid (m-BDC), which bridges to neighboring nodes. The crystal structure of CuMOF-Bipy consists of a stacked two-dimensional framework with the sql topology. CuMOF-Bipy was characterized by single-crystal X-ray diffraction (SC-XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and CO2 sorption. CuMOF-Bipy was shown to have one-dimensional sinusoidal channels that allow diffusion of CO2 but not N2.
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Affiliation(s)
- Muhammad Abbas
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX 75080, USA
| | - Amanda M Maceda
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX 75080, USA
| | - Zhifeng Xiao
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Hong-Cai Zhou
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Kenneth J Balkus
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX 75080, USA
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