854028-46-9Relevant academic research and scientific papers
A Luminescent Terbium MOF Containing Hydroxyl Groups Exhibits Selective Sensing of Nitroaromatic Compounds and Fe(III) Ions
Pal, Sanchari,Bharadwaj, Parimal K.
, p. 5852 - 5858 (2016)
A new 3D porous Tb(III)-ion based PMOF, {[Tb(L)(DMA)]·(DMA)·(0.5H2O)} (1) (where L = L3-, H3L = 3′-hydroxybiphenyl-3,4′,5-tricarboxylic acid), with uncoordinated hydroxyl groups decorating the pores has been solvothermally synthesized in moderate yield. The hydroxyl groups act as potential interaction sites to sensitize the luminescence output of the Tb3+ ion. Luminescence studies reveal that the PMOF can selectively and reversibly sense nitroaromatic compounds and Fe(III) ions in DMF suspension through fluorescence quenching observable under UV light. The probable mechanisms for such sensing processes are, for the nitroaromatic compounds, the host-guest interactions with the PMOF and, for Fe3+ ion, the competitive absorption of excitation energy.
Molecular Insight into Fluorocarbon Adsorption in Pore Expanded Metal-Organic Framework Analogs
Barpaga, Dushyant,Bhattacharya, Papri,Brown, Craig M.,Fan, Yanzhong,Jenks, Jeromy J.,Maurin, Guillaume,McGrail, B. Peter,Motkuri, Radha Kishan,Shetty, Manish,Su, Cheng-Yong,Trump, Benjamin A.,Zheng, Jian
supporting information, p. 3002 - 3012 (2020/03/10)
The rapid growth in the global energy demand for space cooling requires the development of more efficient environmental chillers for which adsorption-based cooling systems can be utilized. Here, in this contribution, we explore sorbents for chiller use via a pore-engineering concept to construct analogs of the 1-dimensional pore metal-organic framework MOF-74 by using elongated organic linkers and stereochemistry control. The prepared pore-engineered MOFs show remarkable equilibrium adsorption of the selected fluorocarbon refrigerant that is translated to a modeled adsorption-based refrigeration cycle. To probe molecular level interactions at the origin of these unique adsorption properties for this series of Ni-MOFs, we combined in situ synchrotron X-ray powder diffraction, neutron powder diffraction, X-ray absorption spectroscopy, calorimetry, Fourier transform infrared techniques, and molecular simulations. Our results reveal the coordination of fluorine (of CH2F in R134a) to the nickel(II) open metal centers at low pressures for each Ni-MOF analog and provide insight into the pore filling mechanism for the full range of the adsorption isotherms. The newly designed Ni-TPM demonstrates exceptional R134a adsorption uptake compared to its parent microporous Ni-MOF-74 due to larger engineered pore size/volume. The application of this adsorption performance toward established chiller conditions yields a working capacity increase for Ni-TPM of about 400% from that of Ni-MOF-74, which combined with kinetics directly correlates to both a higher coefficient of performance and a higher average cooling capacity generated in a modeled chiller.
Series of M-MOF-184 (M = Mg, Co, Ni, Zn, Cu, Fe) Metal-Organic Frameworks for Catalysis Cycloaddition of CO2
Tran,Nguyen, Phuong T. K.,Luong, Quang T.,Nguyen, Khoi D.
supporting information, p. 16747 - 16759 (2020/11/13)
In light of the chemical exploitation of CO2, new reusable materials for efficiently catalyzing the cycloaddition of CO2 and epoxides under moderate conditions are needed. Herein, a new series of isostructural metal-organic frameworks (MOFs) M2(EDOB) [EDO
Salicylate inhibitors of MELK and methods of use
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Paragraph 0194; 0196; 0198; 0199, (2018/01/20)
Provided herein are small molecule inhibitors of maternal embryonic leucine zipper kinase (MELK) having the structure of formula (I), wherein X and R1-R3 are defined in the specification. The compounds are useful for treating cancer and other conditions o
Tuning of luminescence color of π-conjugated liquid crystals through co-assembly with ionic liquids
Mitani, Masato,Yoshio, Masafumi,Kato, Takashi
supporting information, p. 9972 - 9978 (2017/10/13)
Luminescent oxadiazole-based columnar liquid crystals containing a diethanolamine moiety forming intramolecular donor-acceptor charge transfer states have been designed and synthesized. These molecules exhibit strong solvatochromism depending on the solvent polarity. The co-assembly of oxadiazole derivatives and nonvolatile 1-butyl-3-methylimidazolium-based ionic liquids through hydrogen bonding leads to the formation of thermally stable nanosegregated columnar structures with confined channels of ionic liquids. Modulation of the emission color from light-blue to blue-green in the liquid-crystalline states has been achieved by incorporating the ionic liquid. This red-shifted emission can be attributed to the stabilization of the excited intramolecular charge transfer state of the donor-acceptor luminophore by polar molecules. The presented tunable luminescent soft materials obtained through noncovalent supramolecular approaches will open a new avenue in the fields of optoelectronic organic materials.
Pore-Engineered Metal-Organic Frameworks with Excellent Adsorption of Water and Fluorocarbon Refrigerant for Cooling Applications
Zheng, Jian,Vemuri, Rama S.,Estevez, Luis,Koech, Phillip K.,Varga, Tamas,Camaioni, Donald M.,Blake, Thomas A.,McGrail, B. Peter,Motkuri, Radha Kishan
supporting information, p. 10601 - 10604 (2017/08/15)
Metal-organic frameworks (MOFs) have shown promising behavior for adsorption cooling applications. Using organic ligands with 1, 2, and 3 phenylene rings, we construct moisture-stable Ni-MOF-74 members with adjustable pore apertures, which exhibit excelle
Acetylene Bridged Linkers and Metal-Organic Frameworks (MOFs) Produced Thereof
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, (2014/04/03)
Described are acetylene bridged linkers, metal-organic frameworks produced thereof, processes for producing the linkers and the metal-organic frameworks, and the use of the metal-organic frameworks. The metal-organic frameworks possess an enhanced ability to adsorb and desorb high amounts of gases, in particular methane or hydrogen. The metal-organic frameworks have a high porosity and, thus, a high inner surface.
ACETYLENE BRIDGED LINKERS AND METAL-ORGANIC FRAMEWORKS (MOFS) PRODUCED THEREOF
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, (2014/04/04)
The present invention relates to acetylene bridged linkers, metal-organic frameworks produced thereof, processes for producing the linkers and the MOFs and their use.
METAL-ORGANIC FRAMEWORKS WITH EXCEPTIONALLY LARGE PORE APERATURES
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Paragraph 0212; 0224, (2013/04/24)
The disclosure relates to metal organic frameworks or isoreticular metal organic frameworks, methods of production thereof, and methods of use thereof.
MOLECULAR GAUGE BLOCKS FOR BUILDING ON THE NANOSCALE
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Paragraph 0049, (2013/05/22)
Disclosed herein is a way to produce a series of discrete sized slender, rigid oligoparaxylene molecules ranging from 1-5 nm in length. Molecules, based on 1-7, 9-11 paraxylene rings, have been synthesized as part of a homologous series of oligoparaxylenes (OPXs) with a view to providing a molecular tool box for the construction of nano architectures—such as spheres, cages, capsules, metal-organic frameworks (MOFs), metal-organic polyhedrons (MOPs) and covalent-organic frameworks (COFs), to name but a few—of well-defined sizes and shapes. Twisting between the planes of contiguous paraxylene rings is generated by the steric hindrance associated with the methyl groups and leads to the existence of soluble molecular gauge blocks without the need—at least in the case of the lower homologues—to introduce long aliphatic side chains onto the phenylene rings in the molecules.
