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Di Y, Chen Y, Cao Y, Cui X, Liu Y, Zhou C, Di Y. The Investigation of CO2 Chemical Fixation and Fluorescent Recognition for YbIII-Organic Framework. Catal Letters 2023. [DOI: 10.1007/s10562-023-04270-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Lv H, Fan L, Hu T, Jiao C, Zhang X. A highly robust cluster-based indium(III)-organic framework with efficient catalytic activity in cycloaddition of CO 2 and Knoevenagel condensation. Dalton Trans 2023; 52:3420-3430. [PMID: 36815544 DOI: 10.1039/d2dt04043c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The efficient catalytic performance displayed by MOFs is decided by an appropriate charge/radius ratio of defect metal sites, large enough solvent-accessible channels and Lewis base sites capable of polarizing substrate molecules. Herein, the solvothermal self-assembly led to a highly robust nanochannel-based framework of {[In4(CPDD)2(μ3-OH)2(DMF)(H2O)2]·2DMF·5H2O}n (NUC-66) with a 56.8% void volume, which is a combination of a tetranuclear cluster [In4(μ3-OH)2(COO)10(DMF)(H2O)2] (abbreviated as {In4}) and a conjugated tetracyclic pentacarboxylic acid ligand of 4,4'-(4-(4-carboxyphenyl)pyridine-2,6-diyl)diisophthalic acid (H5CPDD). To the best of our knowledge, NUC-66 is a rarely reported {In4}-based 3D framework with embedded hierarchical triangular-microporous (2.9 Å) and hexagonal-nanoporous (12.0 Å) channels, which are shaped by six rows of {In4} clusters. After solvent exchange and vacuum drying, the surface of nanochannels in desolvated NUC-66a is modified by unsaturated In3+ ions, Npyridine atoms and μ3-OH groups, all of which display polarization ability towards polar molecules due to their Lewis acidity or basicity. The catalytic experiments performed showed that NUC-66a had high catalytic activity in the cycloaddition reactions of epoxides with CO2 under mild conditions, which should be ascribed to its structural advantages including nanoscale channels, rich bifunctional active sites, large surface areas and chemical stability. Moreover, NUC-66a, as a heterogeneous catalyst, could greatly accelerate the Knoevenagel condensation reactions of aldehydes and malononitrile. Hence, this work confirms that the development of rigid nanoporous cluster-based MOFs built on metal ions with a high charge and large radius ratio will be more likely to realize practical applications, such as catalysis, adsorption and separation of gas, etc.
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Affiliation(s)
- Hongxiao Lv
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
| | - Liming Fan
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
| | - Tuoping Hu
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
| | - Chenxu Jiao
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
| | - Xiutang Zhang
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
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Kong H, Liu S, Wang Y, Xu Q, Li K, Ma P, Wang J, Niu J. Assembly of a Hexameric Cluster of Polyoxomolybdotriphosphonate Builts from [Zn(H 2O){TeMo 6O 21}{N(CH 2PO 3) 3}] 6- Subunits and Its Optical and Catalytic Properties. Inorg Chem 2021; 60:15759-15767. [PMID: 34606253 DOI: 10.1021/acs.inorgchem.1c02417] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The crown-shaped organotriphosphonate-modified 36-molybdenum cluster (NH4)18Na7H11[Zn(H2O)TeMo6O21{N(CH2PO3)3}]6·23H2O (1) has been synthesized, which is the largest zinc-containing organophosphonate-based polyoxometalate to date. Compound 1 was prepared in buffer solution (pH 5.5) with heptamolybdate and amino trimethylene phosphonic acid (ATMP) as the organic ligand. The polyanion constructed from a hexmeric assembly of [Zn(H2O){TeMo6O21}{N(CH2PO3)3}]6- subunits has been fully investigated by a few characterization methods. In this work, we discovered that 1 exhibited reversible photochromism and it changed from white to reddish brown upon UV irradiation. In addition, compound 1, as a catalyst, can oxidize sulfides to sulfoxides, showing a high yield/conversion and a good selectivity.
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Affiliation(s)
- Hui Kong
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Siyu Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Yaqiong Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Qian Xu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Keli Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, People's Republic of China
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Chen H, Fan L, Hu T, Zhang X. Template-Induced {Mn 2}-Organic Framework with Lewis Acid-Base Canals as a Highly Efficient Heterogeneous Catalyst for Chemical Fixation of CO 2 and Knoevenagel Condensation. Inorg Chem 2021; 60:7276-7283. [PMID: 33945691 DOI: 10.1021/acs.inorgchem.1c00352] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The target for the self-assembly of functional microporous metal-organic frameworks (MOFs) could be realized by employing ligand-directed and/or template-induced strategies, which prompted us to explore the synthetic technique of d10 secondary-building-unit-based nanoporous frameworks. Here, the exquisite combination of a paddle-wheel [Mn2(CO2)6(OH2)2] cluster and a TDP6- ligand contributes one robust honeycomb framework of {(Me2NH2)2[Mn2(TDP)(H2O)2]·3H2O·3DMF}n (NUC-31; DMF = N,N-dimethylformamide), whose activated state with the removal of associated aqueous molecules characterizes the outstanding physicochemical properties of nanochannels, penta- and tetracoordinated Mn2+ serving as highly open metal sites, rich Lewis base sites (rows of C═O groups and Npyridine atoms), and excellent thermal stability. Moreover, it is worth mentioning that Lewis acid-base sites on the inner surface of the channels in activated NUC-31 successfully form one unprecedented canal-shaped acid-base confined space with evenly distributed open metal sites of Mn2+ and Npyridine atoms as the canal bottom as well as two rows of C═O groups serving as dyke dams. Catalytic experiments displayed that activated NUC-31 could serve as an efficient heterogeneous catalyst for the chemical fixation of CO2 with epoxides into cyclic carbonates under mild conditions. Furthermore, NUC-31 could effectively catalyze the reaction Knoevenagel condensation, which should be ascribed to the synergistic polarization effect aroused from its plentiful Lewis base sites in the confined channel space. Hence, these results demonstrate that the employment of ligand-directed and template-dependent strategies could overcome the self-assembled barriers of functional microporous MOFs and achieve unexpected frameworks.
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Affiliation(s)
- Hongtai Chen
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Liming Fan
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Tuoping Hu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Xiutang Zhang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
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Chen H, Fan L, Hu T, Zhang X. V═O Functionalized {Tm 2}-Organic Framework Designed by Postsynthesis Modification for Catalytic Chemical Fixation of CO 2 and Oxidation of Mustard Gas. Inorg Chem 2021; 60:5005-5013. [PMID: 33721489 DOI: 10.1021/acs.inorgchem.1c00053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In terms of recently documented references, the introduction of V═O units into porous MOF/COF frameworks can greatly improve their original performance and expand their application prospects due to a change in their electronegativity. In this work, by a cation-exchange strategy, a consummate combination of separate 4f [Tm2(CO2)8] SBUs and 3d [VIVO(H2O)2] units generated the functionalized porous metal-organic framework {(Me2NH2)2[VO(H2O)][Tm2(BDCP)2]·3DMF·3H2O}n (NUC-11), in which [Tm2(CO2)8] SBUs constitute the fundamental 3D host framework of {[Tm2](BDCP)2}n along with [VIVO(H2O)2] units being further docked on the inner wall of channels by covalent bonds. Significantly, NUC-11 represents the first example of V═O modified porous MOFs, in which uncoordinated carboxylic groups (-CO2H) further grasp the functional [VIVO(H2O)2] units on the initial basic skeleton along with the formation of covalent bonds as fixed ropes. Furthermore, activated samples of NUC-11 displayed a good catalytic performance for the chemical synthesis of carbonates from related epoxides and CO2 with high conversion rate. Moreover, by employing NUC-11 as a catalyst, a simulator of mustard gas, 2-chloroethyl ethyl sulfide, could be quickly and efficiently oxidized into low-toxicity products of oxidized sulfoxide (CEESO). Thus, this study offers a brand new view for the design and synthesis of functional-units-modified porous MOFs, which could be potentially applied as an excellent candidate in the growing field of efficient catalysis.
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Affiliation(s)
- Hongtai Chen
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Liming Fan
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Tuoping Hu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Xiutang Zhang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
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Zhang T, Chen H, Lv H, Li Q, Zhang X. Nanochannel-based heterometallic {Zn IIHo III}-organic framework with high catalytic activity for the chemical fixation of CO 2. RSC Adv 2021; 11:9731-9739. [PMID: 35423445 PMCID: PMC8695428 DOI: 10.1039/d1ra00590a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 02/15/2021] [Indexed: 11/21/2022] Open
Abstract
The exquisite combination of ZnII and HoIII generated the highly robust [ZnHo(CO2)6(OH2)]-based heterometallic framework of {[ZnHo(TDP)(H2O)]·5H2O·3DMF} n (NUC-30, H6TDP = 2,4,6-tri(2',4'-dicarboxyphenyl)pyridine), which featured outstanding physicochemical properties, including honeycomb nanochannels, high porosity, large specific surface area, the coexistence of highly open Lewis acid-base sites, good thermal and chemical stability, and resistance to most organic solvents. Due to its extremely unsaturated metal tetra-coordinated Zn(ii) ions, hepta-coordinated Ho(iii) and high faveolate void volume (61.3%), the conversion rate of styrene oxide and CO2 into cyclic carbonates in the presence of 2 mol% activated NUC-30 and 5 mol% n-Bu4NBr reached 99% under the mild conditions of 1.0 MPa and 60 °C. Furthermore, the luminescence sensing experiments proved that NUC-30 could be used as a fast, sensitive and highly efficiency sensor for the detection of Fe3+ in aqueous solution. Therefore, these results prove that nanoporous MOFs assembled from pyridine-containing polycarboxylate ligands have wide applications, such as catalysis and as luminescent materials.
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Affiliation(s)
- Tao Zhang
- North University of China Taiyuan 030051 People's Republic of China
- Taiyuan Institute of Technology Taiyuan 030008 People's Republic of China
| | - Hongtai Chen
- North University of China Taiyuan 030051 People's Republic of China
| | - Hongxiao Lv
- North University of China Taiyuan 030051 People's Republic of China
| | - Qiaoling Li
- North University of China Taiyuan 030051 People's Republic of China
| | - Xiutang Zhang
- North University of China Taiyuan 030051 People's Republic of China
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Chen H, Hu T, Fan L, Zhang X. One Robust Microporous Tm III-Organic Framework for Highly Catalytic Activity on Chemical CO 2 Fixation and Knoevenagel Condensation. Inorg Chem 2021; 60:1028-1036. [PMID: 33382244 DOI: 10.1021/acs.inorgchem.0c03134] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In terms of documented references, multifunctional MOFs with high catalytic performance could be constructed from the combination of metal cations and polycarboxyl-pyridine ligands, which could efficiently endow crystallized porous frameworks with the coexisting Lewis acid-base properties. Thus, by employing a ligand-directed synthetic strategy, the exquisite combination of wave-like inorganic chains of [Tm(CO2)3(OH2)]n and mononuclear units of [Tm(CO2)4(OH2)2] with the aid of the specially designed ligand of 2,6-bis(2,4-dicarboxylphenyl)-4-(4-carboxylphenyl)pyridine (H5BDCP) generates one highly robust microporous framework of {(Me2NH2)[Tm3(BDCP)2)(H2O)3]·4DMF·H2O}n (simplified as NUC-25), which contains near-rectangular nanochannels and large solvent-residing voids. Furthermore, the activated state of NUC-25 with the removal of associated water molecules is a rarely reported bifunctional heterogeneous catalyst due to the coexistence of Lewis acid-base sites including 6-coordinated Tm3+ ions, uncoordinated carboxyl oxygen atoms, and Npyridine atoms. Just as expected, NUC-25 exhibits greatly high catalytic activity for the cycloaddition reaction of epoxides with CO2 into alkyl cyclic carbonates under bland solvent-free conditions, which should be ascribed to the polarity of nitrogen-containing pyridine heterocycles as Lewis base sites on the inner surface of nano-caged voids except for recognized Lewis acid sites of rare earth cations. Moreover, the excellent pore-size-dependent catalytic property for Knoevenagel condensation reactions confirms that NUC-25 can be viewed as a recyclable bifunctional heterogeneous catalyst. Therefore, these results strongly demonstrate that microporous MOFs assembled from pre-designed polycarboxyl-heterocyclic ligands display better catalytic performance not only for chemical CO2 fixation but also for Knoevenagel condensation reactions.
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Affiliation(s)
- Hongtai Chen
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Tuoping Hu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Liming Fan
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
| | - Xiutang Zhang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, People's Republic of China
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Yu W, Li B, Zhang Y, Yan Q, Yan J. Discovery of a Fullerene-Polyoxometalate Hybrid Exhibiting Enhanced Photocurrent Response. Inorg Chem 2020; 59:5266-5270. [PMID: 32250606 DOI: 10.1021/acs.inorgchem.0c00188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new C60-polyoxometalate compound was synthesized by a C60 derivative with a {SiW11Mn} cluster connecting through a coordination bond and characterized. The photocurrent response test showed great improvement of this new compound compared to C60 and the polyoxometalate precursor, which could be used as a potential photoelectric material.
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Affiliation(s)
- Weidong Yu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Bin Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Yin Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Qianwen Yan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Jun Yan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China.,Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, Hunan, P. R. China
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