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Mohamed GG, Omar MM, Moustafa BS, AbdEl-Halim HF, Farag NA. Spectroscopic investigation, thermal, molecular structure, antimicrobial and anticancer activity with modelling studies of some metal complexes derived from isatin Schiff base ligand. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kalinke LHG, Rabelo R, Valdo AK, Martins FT, Moliner N, Ferrando-Soria J, Julve M, Lloret F, Cano J, Cangussu D. Trinuclear Cobalt(II) Triple Helicate with a Multidentate Bithiazolebis(oxamate) Ligand as a Supramolecular Nanomagnet. Inorg Chem 2022; 61:5696-5700. [PMID: 35385259 DOI: 10.1021/acs.inorgchem.2c00291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The cobalt(II)-mediated self-assembly of the potentially tris(chelating) N,N'-2,2'-(4,4'-bithiazole)bis(oxamate) (dabtzox) ligand gives a new metal-organic supramolecular nanomagnet of formula K6Co3(dabtzox)3·8H2O·MeOH (1) featuring a unique linear triple-stranded trinuclear structure of the helicate type.
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Affiliation(s)
- Lucas H G Kalinke
- Instituto Federal de Goiás, IFG-Câmpus Anápolis, Anápolis, Goiás 75131-457, Brazil
| | - Renato Rabelo
- Departament de Química Inorgànica, Instituto de Ciencia Molecular, 46980 C/Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Ana K Valdo
- Instituto Federal de Educação, Ciência e Tecnologia Goiano, Iporá, Goiás 76200-000, Brazil
| | - Felipe T Martins
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás 74001-970, Brazil
| | - Nicolás Moliner
- Departament de Química Inorgànica, Instituto de Ciencia Molecular, 46980 C/Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Jesus Ferrando-Soria
- Departament de Química Inorgànica, Instituto de Ciencia Molecular, 46980 C/Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Miguel Julve
- Departament de Química Inorgànica, Instituto de Ciencia Molecular, 46980 C/Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Francesc Lloret
- Departament de Química Inorgànica, Instituto de Ciencia Molecular, 46980 C/Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Joan Cano
- Departament de Química Inorgànica, Instituto de Ciencia Molecular, 46980 C/Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Danielle Cangussu
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás 74001-970, Brazil
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Sorption and Magnetic Properties of Oxalato-Based Trimetallic Open Framework Stabilized by Charge-Assisted Hydrogen Bonds. Int J Mol Sci 2022; 23:ijms23031556. [PMID: 35163480 PMCID: PMC8835875 DOI: 10.3390/ijms23031556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 11/26/2022] Open
Abstract
We report a new structure of {[Co(bpy)2(ox)][{Cu2(bpy)2(ox)}Fe(ox)3]}n·8.5nH2O NCU-1 presenting a rare ladder topology among oxalate-based coordination polymers with anionic chains composed of alternately arranged [Cu2(bpy)2(ox)]2+ and [Fe(ox)3]3− moieties. Along the a axis, they are separated by Co(III) units to give porous material with voids of 963.7 Å3 (16.9% of cell volume). The stability of this structure is assured by a network of stacking interactions and charge-assisted C-H…O hydrogen bonds formed between adjacent chains, adjacent cobalt(III) units, and alternately arranged cobalt(III) and chain motifs. The soaking experiment with acetonitrile and bromobenzene showed that water molecules (8.5 water molecules dispersed over 15 positions) are bonded tightly, despite partial occupancy. Water adsorption experiments are described by a D’arcy and Watt model being the sum of Langmuir and Dubinin–Serpinski isotherms. The amount of primary adsorption sites calculated from this model is equal 8.2 mol H2O/mol, being very close to the value obtained from the XRD experiments and indicates that water was adsorbed mainly on the primary sites. The antiferromagnetic properties could be only approximately described with the simple CuII-ox-CuII dimer using H = −J·S1·S2, thus, considering non-trivial topology of the whole Cu-Fe chain, we developed our own general approach, based on the semiclassical model (SC) and molecular field (MF) model, to describe precisely the magnetic superexchange interactions in NCU-1. We established that Cu(II)-Cu(II) coupling dominates over multiple Cu(II)-Fe(III) interactions, with JCuCu = −275(29) and JCuFe = −3.8(1.6) cm−1 and discussed the obtained values against the literature data.
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Matos CRMO, Sarmiento CV, C Silva H, Ferreira GB, Guedes GP, Nunes WC, Ronconi CM. Field-induced single-ion magnets exhibiting tri-axial anisotropy in a 1D Co(II) coordination polymer with a rigid ligand 4,4'-(buta-1,3-diyne-1,4-diyl)dibenzoate. Dalton Trans 2021; 50:15003-15014. [PMID: 34726676 DOI: 10.1039/d1dt01961a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein a 1D Co(II) coordination polymer of formula [Co(η1-L1)(η2-L1)(py)2(H2O)]n (CoCP) has been synthesised using the rigid H2L1 proligand, containing a long spacer bearing two triple bonds. Single-crystal X-ray diffraction showed that Co(II) adopts a distorted octahedral geometry. The state-averaged complete active self-consistent field (SA-CASSCF) calculation showed that the ground state of CoCP is a high spin quartet with a highly multiconfigurational character of its electronic structure. Due to the large intra- and intermolecular distances between the spin carriers, the magnetic interactions are negligible and the zero-field splitting (ZFS) effects of cobalt(II) ions are predominant. This behavior was confirmed by direct current (DC) magnetic measurements and theoretical calculations using the broken-symmetry approach. Quantum chemical calculations indicate that CoCP has a negative axial component possessing mixed tri-axial anisotropy. The DC magnetic susceptibility data were fitted with a Griffith-Figgis Hamiltonian and the obtained parameters are in good agreement with those simulated by the ab initio calculation. Alternating current (AC) magnetic measurements showed a field induced slow magnetic relaxation in CoCP, which is attributed to the hyperfine interaction effects.
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Affiliation(s)
- Catiúcia R M O Matos
- Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.
| | - Charlie V Sarmiento
- Instituto de Física, Universidade Federal Fluminense (UFF), Niterói, RJ, 24210-346, Brazil
| | - Henrique C Silva
- Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.
| | - Glaucio B Ferreira
- Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.
| | - Guilherme P Guedes
- Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.
| | - Wallace C Nunes
- Instituto de Física, Universidade Federal Fluminense (UFF), Niterói, RJ, 24210-346, Brazil
| | - Célia M Ronconi
- Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.
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5
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de Campos NR, Simosono CA, Landre Rosa IM, da Silva RMR, Doriguetto AC, do Pim WD, Gomes Simões TR, Valdo AKSM, Martins FT, Sarmiento CV, Nunes WC, Guedes GP, Pedroso EF, Pereira CLM, Stumpf HO, Lloret F, Julve M, Marinho MV. Building-up host-guest helicate motifs and chains: a magneto-structural study of new field-induced cobalt-based single-ion magnets. Dalton Trans 2021; 50:10707-10728. [PMID: 34308946 DOI: 10.1039/d1dt01693h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we present the synthetic pathway, a refined structural description, complete solid-state characterization and the magnetic properties of four new cobalt(ii) compounds of formulas [Co(H2O)6][Co2(H2mpba)3]·2H2O·0.5dmso (1), [Co(H2O)6][Co2(H2mpba)3]·3H2O·0.5dpss (2), [Co2(H2mpba)2(H2O)4]n·4nH2O (3), and [Co2(H2mpba)2(CH3OH)2(H2O)2]n·0.5nH2O·2ndpss (4) [dpss = 2,2'-dipyridyldisulfide and H4mpba = 1,3-phenylenebis(oxamic) acid], where 2 and 4 were obtained from [Co(dpss)Cl2] (Pre-I) as the source of cobalt(ii). All four compounds are air-stable and were prepared under ambient conditions. 1 and 2 were obtained from a slow diffusion method [cobalt(ii) : H2mpba2- molar ratio used 1 : 1] and their structures are made up of [Co2(H2mpba)3]2- anionic helicate units and [Co(H2O)6]2+ cations, exhibiting supramolecular three-dimensional structures. Interestingly, a supramolecular honeycomb network between the helicate units interacting with each other through R22(10) type hydrogen bonds occurs in 2 hosting one co-crystallized dpss molecule. On the other hand, for the first time, linear (3) and zigzag (4) cobalt(ii) chains were isolated by slow evaporation of stirred solutions of mixed solvents with cobalt(ii) : H2mpba2- in 1 : 2 molar ratio at room temperature. Magnetic measurements of Pre-I revealed a quasi magnetically isolated S = 3/2 spin state with a significant second-order spin-orbit contribution as expected for tetrahedrally coordinated cobalt(ii) ions. The analysis of the variable temperature static (dc) magnetic susceptibility data through first- (1 and 3) and second-order spin-orbit coupling models (2 and 4) reveals the presence of magnetically non-interacting high-spin cobalt(ii) ions with easy-axis (1 and 4)/easy-plane magnetic anisotropies (2 and 4) with low rhombic distortions. Dynamic (ac) magnetic measurements for Pre-I and 1-4 below 8.0 K show that they are examples of field-induced Single-Ion Magnets (SIMs).
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Affiliation(s)
- Nathália R de Campos
- Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG 37133-840, Brazil.
| | - Cintia A Simosono
- Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG 37133-840, Brazil.
| | - Iara M Landre Rosa
- Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG 37133-840, Brazil.
| | - Rafaela M R da Silva
- Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG 37133-840, Brazil.
| | - Antônio C Doriguetto
- Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG 37133-840, Brazil.
| | - Walace D do Pim
- Departamento de Química, Centro Federal de Educação Tecnológica de Minas Gerais, Belo Horizonte, MG 30421-169, Brazil
| | | | - Ana Karoline S M Valdo
- Instituto de Física, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Felipe T Martins
- Instituto de Física, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Charlie V Sarmiento
- Instituto de Física, Universidade Federal Fluminense, Niterói, Rio de Janeiro, RJ 24210-346, Brazil
| | - Wallace C Nunes
- Instituto de Física, Universidade Federal Fluminense, Niterói, Rio de Janeiro, RJ 24210-346, Brazil
| | - Guilherme P Guedes
- Instituto de Química, Universidade Federal Fluminense, Niterói, Rio de Janeiro, 24020-141, Brazil
| | - Emerson F Pedroso
- Departamento de Química, Centro Federal de Educação Tecnológica de Minas Gerais, Belo Horizonte, MG 30421-169, Brazil
| | - Cynthia L M Pereira
- Departamento de Química-ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Humberto O Stumpf
- Departamento de Química-ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, C/catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, C/catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Maria Vanda Marinho
- Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG 37133-840, Brazil.
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Li A, Forté J, Li Y, Journaux Y, Lisnard L. Synthesis, structure and magnetic properties of an oxamate-based 1D coordination polymer built on pentametallic links. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li A, Chamoreau LM, Baptiste B, Li Y, Journaux Y, Lisnard L. Solvothermal synthesis, structure and magnetic properties of heterometallic coordination polymers based on a phenolato-oxamato co-bidentate-tridentate ligand. Dalton Trans 2021; 50:681-688. [PMID: 33332496 DOI: 10.1039/d0dt03269g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of solvothermal conditions has succesfully led to the preparation of heterometallic 1D coordination polymers from a co-bidentate-tridentate phenolato-oxamato ligand. The reaction of the N-(2-hydoxyphenyl)oxamic acid (ohpma) with acetate salts of transition metal ions at 80 °C has yielded the heterobimetallic [Cu(ohpma)M(OAc)(DMF)2] (M = Co (1); Mn (2)) and the heterotrimetallic [Cu(ohpma)Co0.57Mn0.43(OAc)(DMF)2] (3) chain compounds. Single-crystal and powder diffraction studies show that the polymers are isostructural. Magnetic studies suggest the existence of an inter-chain two-dimensional antiferromagnetic interaction taking place in compounds 1-3.
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Affiliation(s)
- Ang Li
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75252, Paris, France.
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When Molecular Magnetism Meets Supramolecular Chemistry: Multifunctional and Multiresponsive Dicopper(II) Metallacyclophanes as Proof-of-Concept for Single-Molecule Spintronics and Quantum Computing Technologies? MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6040069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Molecular magnetism has made a long journey, from the fundamental studies on through-ligand electron exchange magnetic interactions in dinuclear metal complexes with extended organic bridges to the more recent exploration of their electron spin transport and quantum coherence properties. Such a field has witnessed a renaissance of dinuclear metallacyclic systems as new experimental and theoretical models for single-molecule spintronics and quantum computing, due to the intercrossing between molecular magnetism and metallosupramolecular chemistry. The present review reports a state-of-the-art overview as well as future perspectives on the use of oxamato-based dicopper(II) metallacyclophanes as promising candidates to make multifunctional and multiresponsive, single-molecule magnetic (nano)devices for the physical implementation of quantum information processing (QIP). They incorporate molecular magnetic couplers, transformers, and wires, controlling and facilitating the spin communication, as well as molecular magnetic rectifiers, transistors, and switches, exhibiting a bistable (ON/OFF) spin behavior under external stimuli (chemical, electronic, or photonic). Special focus is placed on the extensive research work done by Professor Francesc Lloret, an outstanding chemist, excellent teacher, best friend, and colleague, in recognition of his invaluable contributions to molecular magnetism on the occasion of his 65th birthday.
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Matos CRMO, S Junior HC, D'Amato DL, de Souza AS, Pinheiro S, Guedes GP, Ferreira GB, Alves OC, de Almeida FB, Garcia F, Ronconi CM. Spin-frustration with two quasi-degenerated spin states of a copper(II) heptanuclear complex obtained from an amino acid ligand. Dalton Trans 2020; 49:16359-16367. [PMID: 32458921 DOI: 10.1039/c9dt04501e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cu(ii) heptanuclear complex (Cu7atac) was synthesised using the hydrated amino acid ligand 2-(5-amino-1H-1,2,4-triazol-3-yl)acetic acid (Hatac·H2O). Single crystal X-ray diffraction analysis revealed a μ3-hydroxo bridged Cu(ii) heptanuclear complex, consisting of two triangular subunits and one Cu(ii) ion as a bridge with the formula [Cu7(atac)6(μ3-OH)2(NO3)2(H2O)10](NO3)4. The magnetic behaviour of this discrete 0D complex shows strong antiferromagnetic couplings between Cu(ii) mediated by N,N bonding and an anti-anti modes of the carboxylate anion of the ligand atac-. The magnetic data were fitted considering a 3J model. To support the model used to fit the magnetic data of the Cu7atac complex, theoretical calculation methods (complete active space self-consistent field, CASSCF, density functional theory (DFT) using the UKS TPSS/Def2-TZVP//Def2-SVP level and periodic boundary conditions (PBC) using PBE/DZVP-MOLOPT-GTH) were performed to obtain the spin states, spin density map and J couplings. The theoretical results suggest that Cu7atac is a spin-frustrated complex in the ground state, in which the doublet spin state co-exists with the quartet spin state.
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Affiliation(s)
- Catiúcia R M O Matos
- Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.
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Li A, Li Y, Chamoreau L, Desmarets C, Lisnard L, Journaux Y. A Bis‐Polydentate Oxamate‐Based Achiral Ligand That Can Stabilize a Macrocyclic Mixed Valence Compound or Induce a 1D Helical Chain. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ang Li
- CNRS Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université 75252 Paris France
| | - Yanling Li
- CNRS Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université 75252 Paris France
| | - Lise‐Marie Chamoreau
- CNRS Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université 75252 Paris France
| | - Christophe Desmarets
- CNRS Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université 75252 Paris France
| | - Laurent Lisnard
- CNRS Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université 75252 Paris France
| | - Yves Journaux
- CNRS Institut Parisien de Chimie Moléculaire, IPCM Sorbonne Université 75252 Paris France
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Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10041310] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Mixed matrix membranes (MMMs) are seen as promising candidates to overcome the fundamental limit of polymeric membranes, known as the so-called Robeson upper bound, which defines the best compromise between permeability and selectivity of neat polymeric membranes. To overcome this limit, the permeability of the filler particles in the MMM must be carefully matched with that of the polymer matrix. The present work shows that it is not sufficient to match only the permeability of the polymer and the dispersed phase, but that one should consider also the individual contributions of the diffusivity and the solubility of the gas in both components. Here we compare the gas transport performance of two different MMMs, containing the metal–organic framework CuNi-MOF in the rubbery Pebax®1657 and in the glassy poly(ether-ether-ketone) with cardo moiety, PEEK-WC. The chemical and structural properties of MMMs were investigated by means of FT-IR spectroscopy, scanning electron microscopy and EDX analysis. The influence of MOF on the mechanical and thermal properties of both polymers was investigated by tensile tests and differential scanning calorimetry, respectively. The MOF loading in Pebax®1657 increased the ideal H2/N2 selectivity from 6 to 8 thanks to an increased H2 permeability. In general, the MOF had little effect on the Pebax®165 membranes because an increase in gas solubility was neutralized by an equivalent decrease in effective diffusivity. Instead, the addition of MOF to PEEK-WC increases the ideal CO2/CH4 selectivity from 30 to ~48 thanks to an increased CO2 permeability (from 6 to 48 Barrer). The increase in CO2 permeability and CO2/CH4 selectivity is maintained under mixed gas conditions.
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Zhang AQ, Liu LL. Syntheses, Structures, Luminescence, and Gas Adsorption Properties of Two New Heterometallic Complexes Involving Alkaline Earth Metals (Ca, Ba). Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ai-Qin Zhang
- Animal Husbandry, Pasture and Green Agriculture Institute; Institute of Agricultural Quality Standards and Testing Technology; Gansu Academy of Agricultural Sciences; 730070 Lanzhou P. R. China
| | - Li-Long Liu
- Animal Husbandry, Pasture and Green Agriculture Institute; Institute of Agricultural Quality Standards and Testing Technology; Gansu Academy of Agricultural Sciences; 730070 Lanzhou P. R. China
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