نتایج جستجو برای: metal organic framework mof

تعداد نتایج: 833999  

2016
Bingxing Zhang Jianling Zhang Chengcheng Liu Li Peng Xinxin Sang Buxing Han Xue Ma Tian Luo Xiuniang Tan Guanying Yang

To design high-internal-phase emulsion (HIPE) systems is of great interest from the viewpoints of both fundamental researches and practical applications. Here we demonstrate for the first time the utilization of metal-organic framework (MOF) for HIPE formation. By stirring the mixture of water, oil and MOF at room temperature, the HIPE stabilized by the assembly of MOF nanocrystals at oil-water...

Journal: :Angewandte Chemie 2014
Benjamin K Keitz Chung Jui Yu Jeffrey R Long Rob Ameloot

A photobase generator was used to induce metal-organic framework (MOF) nucleation upon UV irradiation. This method was further developed into a simple, one-step method for depositing patterned MOF films. Furthermore, the ability of our method to coat a single substrate with MOF films having different chemical compositions is illustrated. The method is an important step towards integrating MOF d...

Journal: :Chemical communications 2015
Peter Siman Christopher A Trickett Hiroyasu Furukawa Omar M Yaghi

Metal-organic frameworks (MOFs) based purely on sodium are rare, typically due to large numbers of coordinating solvent ligands. We designed a tetratopic aspartate-based linker with flexible carboxylate groups to enhance framework stability. We report two new air-stable sodium MOFs, MOF-705 and MOF-706, comprising 2D sodium oxide sheets.

Journal: :Advanced materials 2013
Hirotaka Ejima Nobuhiro Yanai James P Best Melinda Sindoro Steve Granick Frank Caruso

Faceted polymer microcapsules are prepared from metal-organic framework (MOF) templates. The MOF templates are removable under mild aqueous conditions. The obtained microcapsules are stiffer than their spherical counterparts, reflecting the near-incompressibility of the facet edges, and indicating that the faceting might be a useful strategy for controlling the mechanical properties of polymer ...

Journal: :Inorganic chemistry 2014
Olga Karagiaridi Wojciech Bury David Fairen-Jimenez Christopher E Wilmer Amy A Sarjeant Joseph T Hupp Omar K Farha

The synthesis of a permanently porous pillared-paddlewheel metal-organic framework (MOF) was achieved through transmetalation of Zn(II) with Ni(II). The MOF can be treated with liquid water, leading to the reversible displacement of 50% of its pillars by water molecules and resulting in a most unusual crystalline and permanently porous structure.

Journal: :Journal of the American Chemical Society 2009
Abraham M Shultz Omar K Farha Joseph T Hupp SonBinh T Nguyen

Through the use of the tetratopic ligand 1,2,4,5-tetrakis(4-carboxyphenyl)benzene as a key building block, a permanently microporous metal-organic framework with Lewis acidic (porphyrin)Zn struts, ZnPO-MOF, can be made in high yields. ZnPO-MOF can efficiently catalyze acyl-transfer reactions primarily by preconcentrating the substrates within its pores, in stark contrast to analogous supramolec...

Journal: :Chemical communications 2015
Teng-Hao Chen Ilya Popov Yu-Chun Chuang Yu-Sheng Chen Ognjen Š Miljanić

A mesoporous Zn-based metal-organic framework (MOF) was prepared from a shape-persistent phenylene ethynylene macrocycle functionalized with three -COOH groups. The rigid ligand has a ∼9 Å wide central cavity which serves as a predesigned pore. The macrocycles [π···π] stack into pairs, with their carboxylate groups connected via three Zn3O14C6H2 clusters. The resulting MOF has a void volume of ...

Journal: :Dalton transactions 2015
Hong-Ru Fu Fei Wang Jian Zhang

A special organic ligand, 4-carboxypyrazole (4-cpz), is chosen to synthesize a highly stable metal-organic framework (MOF) for selective sorption of light hydrocarbons. The new MOF, (H(3)O)[Zn(3)(OH)(4-cpz)3]·2(DEF)·H(2)O (FIR-51, DEF = N,N-diethylformamide), was synthesized solvothermally and shows unusual chemical stability. This compound exhibits high storage capacity for light hydrocarbons ...

Journal: :Angewandte Chemie 2014
Wen-Yang Gao Yao Chen Youhong Niu Kia Williams Lindsay Cash Pastor J Perez Lukasz Wojtas Jianfeng Cai Yu-Sheng Chen Shengqian Ma

Crystal engineering of the nbo metal-organic framework (MOF) platform MOF-505 with a custom-designed azamacrocycle ligand (1,4,7,10-tetrazazcyclododecane-N,N',N'',N'''-tetra-p-methylbenzoic acid) leads to a high density of well-oriented Lewis active sites within the cuboctahedral cage in MMCF-2, [Cu2(Cu-tactmb)(H2O)3(NO3)2]. This MOF demonstrates high catalytic activity for the chemical fixatio...

Journal: :Inorganic chemistry 2011
Manolis J Manos Marios S Markoulides Christos D Malliakas Giannis S Papaefstathiou Nikos Chronakis Mercouri G Kanatzidis Pantelis N Trikalitis Anastasios J Tasiopoulos

The initial use of a novel elongated tricarboxylic acid H(3)hmpib in metal-organic framework (MOF) chemistry resulted in a [Zn(4)O(hmpib)(2)] MOF (UCY-1) with pyrite topology. The compound displays a remarkably high internal surface area despite its double-interpenetrated structure as well as high CO(2) uptake and selective adsorption for it over CH(4).

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