Base de dados : MEDLINE
Pesquisa : D02.691.638 [Categoria DeCS]
Referências encontradas : 10 [refinar]
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  1 / 10 MEDLINE  
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Texto completo SciELO Brasil
PMID:29267507
Autor:Liu N; Ding D; Wang L; Zhao H; Zhu L; Geng X
Endereço:Department of Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
Título:Two novel Mg(II)-based and Zn(II)-based complexes: inhibiting growth of human liver cancer cells.
Fonte:Braz J Med Biol Res; 51(2):e6929, 2017 Dec 18.
ISSN:1414-431X
País de publicação:Brazil
Idioma:eng
Resumo:Two new Mg(II)-based and Zn(II)-based coordination polymers, {[Mg3(BTB)(DMA)4](DMA)2}n (1, H3BTB=1,3,5-benzenetrisbenzoic acid, DMA=N,N-dimethylacetamide) and {(H2NMe2)2[Zn3(BTB)2(OH)(Im)](DMF)9(MeOH)7}n (2, Im=imidazole, DMF=N,N-dimethylformamide), have been successfully synthesized and structurally characterized under solvothermal conditions. 1 contains a linear [Mg3(COO)6] cluster that connected by the fully deprotonated BTB3- ligands to give a kgd-type 2D bilayer structure; 2 represents a microporous 3D pillar-layered system based on the binuclear Zn units and pillared Im ligands, which shows a (3,5)-connected hms topological net. In addition, in vitro anticancer activities of compounds 1 and 2 on 4 human liver cancer cells (HB611, HHCC, BEL-7405 and SMMC-7721) were determined.
Tipo de publicação: EVALUATION STUDIES; JOURNAL ARTICLE
Nome de substância:0 (Antineoplastic Agents); 0 (Benzimidazoles); 0 (Ligands); 0 (Metal-Organic Frameworks); I38ZP9992A (Magnesium); J41CSQ7QDS (Zinc)


  2 / 10 MEDLINE  
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PMID:29413583
Autor:Cao X; Jiang Z; Wang S; Hong S; Li H; Zhang C; Shao Y; She Y; Jin F; Jin M; Wang J
Endereço:Key Laboratory of Agri-food Safety and Quality, Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Ministry of Agriculture of China, Beijing, 100081, PR China.
Título:Metal-organic framework UiO-66 for rapid dispersive solid phase extraction of neonicotinoid insecticides in water samples.
Fonte:J Chromatogr B Analyt Technol Biomed Life Sci; 1077-1078:92-97, 2018 Mar 01.
ISSN:1873-376X
País de publicação:Netherlands
Idioma:eng
Resumo:UIO-66 crystals were explored for the first time to adsorb neonicotinoid insecticides in environmental water samples. HPLC coupled with tandem MS was used for quantification and determination of neonicotinoid insecticides. UiO-66 crystals was successfully synthesized by a simple constant-temperature bath method. Synthesized UiO-66 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry and nitrogen adsorption porosimetry (NAP), which demonstrated a uniform particle size, a large Brunauer-Emmett-Teller (BET) surface area and high thermostability. The adsorbing results showed that UIO-66 crystals could be used as a promising adsorbents for rapid extraction of neonicotinoid insecticides and be reused at least 10 times. Under the optimized conditions, the limits of detection (LODs, S/N = 3) and limits of quantification (LOQs, S/N = 10) for the five insecticides were found to be 0.02-0.4 ng/mL and 0.05-1.0 ng/mL, respectively. This developed approach not only provided more simple and sensitive method, as well as possessing satisfactory recovery for neonicotinoid insecticides, but also for other traces in environmental samples.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Drinking Water); 0 (Insecticides); 0 (Metal-Organic Frameworks); 0 (Neonicotinoids); 0 (Water Pollutants, Chemical)


  3 / 10 MEDLINE  
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PMID:29478648
Autor:Tella AC; Owalude SO; Olatunji SJ; Adimula VO; Elaigwu SE; Alimi LO; Ajibade PA; Oluwafemi OS
Endereço:Department of Chemistry, University of Ilorin, P.M.B.1515 Ilorin, Nigeria. Electronic address: ac_tella@yahoo.co.uk.
Título:Synthesis of zinc-carboxylate metal-organic frameworks for the removal of emerging drug contaminant (amodiaquine) from aqueous solution.
Fonte:J Environ Sci (China); 64:264-275, 2018 Feb.
ISSN:1001-0742
País de publicação:Netherlands
Idioma:eng
Resumo:We herein report the removal of amodiaquine, an emerging drug contaminant from aqueous solution using [Zn (fum) (bpy)] and [Zn O(bdc) ] (fum=fumaric acid; bpy=4,4-bipyridine; bdc=benzene-1,4-dicarboxylate) metal-organic frameworks (MOFs) as adsorbents. The adsorbents were characterized by elemental analysis, Fourier transform infrared (FT-IR) spectroscopy, and powder X-ray diffraction (PXRD). Adsorption process for both adsorbents were found to follow the pseudo-first-order kinetics, and the adsorption equilibrium data fitted best into the Freundlich isotherm with the R values of 0.973 and 0.993 obtained for [Zn (fum) (bpy)] and [Zn O(bdc) ] respectively. The maximum adsorption capacities foramodiaquine in this study were found to be 0.478 and 47.62mg/g on the [Zn (fum) (bpy)] and [Zn O(bdc) ] MOFs respectively, and were obtained at pH of 4.3 for both adsorbents. FT-IR spectroscopy analysis of the MOFs after the adsorption process showed the presence of the drug. The results of the study showed that the prepared MOFs could be used for the removal of amodiaquine from wastewater.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Carboxylic Acids); 0 (Metal-Organic Frameworks); 0 (Waste Water); 0 (Water Pollutants, Chemical); 220236ED28 (Amodiaquine); J41CSQ7QDS (Zinc)


  4 / 10 MEDLINE  
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PMID:29340528
Autor:Hong C; Zhou X; Huang W; Shan P; Dong F
Endereço:Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
Título:Synthesis and anti-myocarditis activity in a multifunctional lanthanide microporous metal-organic framework with 1D helical chain building units.
Fonte:Braz J Med Biol Res; 51(3):e7050, 2018 Jan 11.
ISSN:1414-431X
País de publicação:Brazil
Idioma:eng
Resumo:A new microporous lanthanide metal-organic framework, {[Yb(BTB)(H2O) (DEF)2}n (1, DEF=N,N-Diethylformamide), with 1D nano-sized channels has been constructed by bridging helical chain secondary building units with 1,3,5-benzenetrisbenzoic acid (H3BTB) ligand. Structural characterization suggests that this complex crystallizes in the hexagonal space group P6122 and possesses 1D triangular channels with coordinated water molecules pointing to the channel center. In addition, anti-myocarditis properties of compound 1 were evaluated in vivo. The results showed that compound 1 can improve hemodynamic parameters of, and it may be a good therapeutic option for heart failure in the future.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Anti-Inflammatory Agents); 0 (Lanthanoid Series Elements); 0 (Metal-Organic Frameworks)


  5 / 10 MEDLINE  
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PMID:29215269
Autor:Yang SP; Zhao W; Hu PP; Wu KY; Jiang ZH; Bai LP; Li MM; Chen JX
Endereço:Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou 510515, People's Republic of China.
Título:Lanthanum-Based Metal-Organic Frameworks for Specific Detection of Sudan Virus RNA Conservative Sequences down to Single-Base Mismatch.
Fonte:Inorg Chem; 56(24):14880-14887, 2017 Dec 18.
ISSN:1520-510X
País de publicação:United States
Idioma:eng
Resumo:Reactions of La(NO ) ·6H O with the polar, tritopic quaternized carboxylate ligands N-carboxymethyl-3,5-dicarboxylpyridinium bromide (H CmdcpBr) and N-(4-carboxybenzyl)-3,5-dicarboxylpyridinium bromide (H CbdcpBr) afford two water-stable metal-organic frameworks (MOFs) of {[La (Cmdcp) (H O) ]} (1, 3D) and {[La (Cbdcp) (H O) ]} (2, 2D). MOFs 1 and 2 absorb the carboxyfluorescein (FAM)-tagged probe DNA (P-DNA) and quench the fluorescence of FAM via a photoinduced electron transfer (PET) process. The nonemissive P-DNA@MOF hybrids thus formed in turn function as sensing platforms to distinguish conservative linear, single-stranded RNA sequences of Sudan virus with high selectivity and low detection limits of 112 and 67 pM, respectively (at a signal-to-noise ratio of 3). These hybrids also exhibit high specificity and discriminate down to single-base mismatch RNA sequences.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Fluoresceins); 0 (Fluorescent Dyes); 0 (Metal-Organic Frameworks); 0 (RNA, Viral); 3301-79-9 (6-carboxyfluorescein); 6I3K30563S (Lanthanum)


  6 / 10 MEDLINE  
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PMID:29193978
Autor:Balestri D; Roux Y; Mattarozzi M; Mucchino C; Heux L; Brazzolotto D; Artero V; Duboc C; Pelagatti P; Marchiò L; Gennari M
Endereço:Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma , Parco Area delle Scienze 17A, 43124 Parma, Italy.
Título:Heterogenization of a [NiFe] Hydrogenase Mimic through Simple and Efficient Encapsulation into a Mesoporous MOF.
Fonte:Inorg Chem; 56(24):14801-14808, 2017 Dec 18.
ISSN:1520-510X
País de publicação:United States
Idioma:eng
Resumo:In the quest for new, efficient, and noble-metal-free H -evolution catalysts, hydrogenase enzymes are a source of inspiration. Here, we describe the development of a new hybrid material based on a structural and functional [NiFe]-hydrogenase model complex (NiFe) incorporated into the Zr-based MOF PCN-777. The bulk NiFe@PCN-777 material was synthesized by simple encapsulation. Characterization by solid-state NMR and IR spectroscopy, SEM-EDX, ICP-OES, and gas adsorption confirmed the inclusion of the guest. FTO-supported thin films of the NiFe@PCN-777 composite were obtained by electrophoretic deposition of the bulk material and characterized by SEM-EDX, ICP-OES, and cyclic voltammetry. The average surface concentration of electroactive NiFe catalyst in the film was found to be ∼9.6 × 10 mol cm , implying that a surprisingly high fraction (37%) of NiFe units incorporated in the MOF are electroactive. By cyclic voltammetry, we showed that NiFe maintains its electrocatalytic capabilities for H reduction inside the MOF cavities, even if under controlled-potential electrolysis conditions the activity of NiFe cannot be discerned from that of free PCN-777 and FTO.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Metal-Organic Frameworks); 0 (Protons); 7OV03QG267 (Nickel); C6V6S92N3C (Zirconium); E1UOL152H7 (Iron); EC 1.12.- (nickel-iron hydrogenase); EC 1.12.7.2 (Hydrogenase)


  7 / 10 MEDLINE  
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PMID:29248346
Autor:Wang Y; Tong Y; Xu X; Zhang L
Endereço:College of Chemistry, Liaoning University, Shenyang 110036, China.
Título:Metal-organic framework-derived three-dimensional porous graphitic octahedron carbon cages-encapsulated copper nanoparticles hybrids as highly efficient enrichment material for simultaneous determination of four fluoroquinolones.
Fonte:J Chromatogr A; 1533:1-9, 2018 Jan 19.
ISSN:1873-3778
País de publicação:Netherlands
Idioma:eng
Resumo:A unique 3D porous Cu@graphitic octahedron carbon cages were constructed by rapid room-temperature synthesis of a Cu-based metal-organic framework (MOF) with further pyrolysis in N , which exhibited good enrichment ability for four fluoroquinolones (FQs) due to their superior chemical affinities to the target analytes. Applied Cu@graphitic octahedron carbon cages as adsorbent, a dispersive solid phase extraction (DSPE) method combined with HPLC was developed for detecting four FQs in real samples. Various parameters affecting residues FQs extraction efficiency were inquired in more detail. Under optimal conditions, the extraction recoveries of four FQs in chicken muscle, fish tissue, seawater and river water samples were in the range of 81.3∼104.3% and the RSDs (n = 5) were less than 5.2%. This method was successfully used to the determination of FQs in real samples.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Anti-Infective Agents); 0 (Fluoroquinolones); 0 (Metal-Organic Frameworks); 7782-42-5 (Graphite); 789U1901C5 (Copper)


  8 / 10 MEDLINE  
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PMID:29406107
Autor:Li X; Yuan H; Quan X; Chen S; You S
Endereço:Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Ling gong Road 2, Dalian 116024, China.
Título:Effective adsorption of sulfamethoxazole, bisphenol A and methyl orange on nanoporous carbon derived from metal-organic frameworks.
Fonte:J Environ Sci (China); 63:250-259, 2018 Jan.
ISSN:1001-0742
País de publicação:Netherlands
Idioma:eng
Resumo:Nanoporous carbons (NPCs) derived from metal-organic frameworks (MOFs) are attracting increasing attention in many areas by virtue of their high specific surface area, large pore volume and unique porosity. The present work reports the preparation of an NPC with high surface area (1731m /g) and pore volume (1.68cm /g) by direct carbonization of MOF-5. We examined the adsorption of three typical contaminants from aqueous solutions, i.e., sulfamethoxazole (SMX), bisphenol A (BPA) and methyl orange (MO), by using the as-prepared NPC. The results demonstrated that NPC could adsorb the contaminants effectively, with adsorption capacity (q ) of 625mg/g (SMX), 757mg/g (BPA) and 872mg/g (MO), respectively. These values were approximately 1.0-3.2 times higher than those obtained for single-walled carbon nanotubes (SWCNTs) and commercial powder active carbon (PAC) under the same conditions. With its high surface area and unique meso/macropore structure, the enhanced adsorption of NPC most likely originates from the cooperative interaction of a pore-filling mechanism, electrostatic interaction, and hydrogen bonding. In particular, the pH value has a crucial impact on adsorption, suggesting the significant contribution of electrostatic interaction between NPC and the contaminants. This study provides a proof-of-concept demonstration of MOF-derived nanoporous carbons as effective adsorbents of contaminants for water treatment.
Tipo de publicação: JOURNAL ARTICLE
Nome de substância:0 (Azo Compounds); 0 (Benzhydryl Compounds); 0 (Metal-Organic Frameworks); 0 (Nanotubes, Carbon); 0 (Phenols); 0 (Water Pollutants, Chemical); 16291-96-6 (Charcoal); 6B4TC34456 (methyl orange); JE42381TNV (Sulfamethoxazole); MLT3645I99 (bisphenol A)


  9 / 10 MEDLINE  
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PMID:29191877
Autor:Kim H; Rao SR; Narayanan S; Kapustin EA; Yang S; Furukawa H; Umans AS; Yaghi OM; Wang EN
Endereço:Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Título:Response to Comment on "Water harvesting from air with metal-organic frameworks powered by natural sunlight".
Fonte:Science; 358(6367), 2017 12 01.
ISSN:1095-9203
País de publicação:United States
Idioma:eng
Resumo:In their comment, Bui argue that the approach we described in our report is vastly inferior in efficiency to alternative off-the-shelf technologies. Their conclusion is invalid, as they compare efficiencies in completely different operating conditions. Here, using heat transfer and thermodynamics principles, we show how Bui 's conclusions about the efficiencies of off-the-shelf technologies are fundamentally flawed and inaccurate for the operating conditions described in our study.
Tipo de publicação: JOURNAL ARTICLE; COMMENT
Nome de substância:0 (Metal-Organic Frameworks); 059QF0KO0R (Water)


  10 / 10 MEDLINE  
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PMID:29191876
Autor:Bui DT; Chua KJ; Gordon JM
Endereço:Department of Mechanical Engineering, National University of Singapore, 117576 Singapore.
Título:Comment on "Water harvesting from air with metal-organic frameworks powered by natural sunlight".
Fonte:Science; 358(6367), 2017 12 01.
ISSN:1095-9203
País de publicação:United States
Idioma:eng
Resumo:Kim (Reports, 28 April 2017, p. 430) presented results for the solar-driven harvesting of water from air via metal-organic frameworks as a prodigious potential advance toward remedying global water shortages. Basic thermodynamics and a survey of multiple off-the-shelf technologies show that their approach is vastly inferior in efficiency (and thereby in feasibility) to available alternatives.
Tipo de publicação: JOURNAL ARTICLE; COMMENT
Nome de substância:0 (Metal-Organic Frameworks); 059QF0KO0R (Water)



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