Abstract: The present invention relates to a novel method of synthesis of copper (I) 5-nitrotetrazolate. Particularly, for the synthesis of the copper (I) 5-nitrotetrazolate, the present invention uses a suitable salt of 5-aminotetrazole, preferably the sulfate or the nitrate salt as the starting compound. The selection of the said starting chemical not only eliminates any safety issue arising during Sandmeyer reaction conditions to affect the functional group conversion but also greatly improves the ease of executing the synthetic protocol, rendering the process safe to be adopted for commercial manufacture of the copper (I) 5-nitrotetrazolate compound.
Type:
Grant
Filed:
December 3, 2021
Date of Patent:
October 3, 2023
Assignee:
PRIMODIA CHEMICALS AND PHARMACEUTICALS PRIVATE LIMITED
Inventors:
Braja Sundar Pradhan, Sanjeev K. Singh, Neha H. Mehta
Abstract: A composition including copper(I) 5-nitrotetrazolate, wherein the composition has a carbon content of less than 7 weight percent, based on a total weight of the copper(I) 5-nitrotetrazolate.
Type:
Grant
Filed:
October 1, 2021
Date of Patent:
September 5, 2023
Assignee:
Ensign-Bickford Aerospace & Defense Company
Abstract: A hypergolic metal organic framework material for producing a hypergol when combined with an oxidizer, comprising a general structure M1-L-M2, wherein L is an aromatic organic linker comprising one or more unsaturated substituents, and wherein M1 and M2 are same or different metal cations.
Type:
Grant
Filed:
September 13, 2019
Date of Patent:
May 9, 2023
Inventors:
Tomislav Fri{hacek over (s)}{hacek over (c)}ić, Robin D. Rogers, Mihails Arhangelskis, Hatem Titi, Dayaker Gandrath, Joseph M. Marrett
Abstract: The present invention is directed to a process for continuous production of copper (I) nitrotetrazolate (DBX-1) by reacting aqueous copper salt with aqueous 5-nitrotetrazolate salt in the presence of a reducing agent. All the reactants are introduced into a continuous flow reactor system, which is composed of a temperature controlled tubular reactor and a mixer that allows for radial mixing. An optional stirred tank reactor may also be incorporated into the process to complete the reaction and allow for crystal growth.
Type:
Grant
Filed:
October 17, 2019
Date of Patent:
April 26, 2022
Assignee:
The United States of America as Represented by the Secretary of the Army
Inventors:
Neha Mehta, Jon G. Bragg, Matthew L. Jorgensen, Andrew G. Pearsall, Jerry S. Salan, Daniel W. Ward
Abstract: This invention relates generally to olefin metathesis catalyst compounds, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, articles of manufacture comprising such compounds, and the use of such compounds in the metathesis of olefins and olefin compounds. The invention has utility in the fields of catalysts, organic synthesis, polymer chemistry, and industrial and fine chemicals industry.
Abstract: Provided is an ionic type phosphorescent metal complex with a racemization structure, a preparation method therefor and a use thereof. The structure of the complex is [PtAg2{rac-(PPh2CH2PPhCH2—)2}(C?CR)2(PR?3)2]2+An?2/n or [PtAg2{meso-(PPh2CH2PPhCH2—)2}(C?CR)2(PR?3)(?-X)]+mAm?, wherein R is the same or different and is independently selected from alkyl, aryl, heteroaryl, and heteroaryl aryl; R? is the same or different and is independently selected from alkyl, aryl, and heteroaryl; the alkyl, aryl, and heteroaryl can be substituted by one or more substituents which are selected from alkyl, alkenyl, alkynyl, alkoxy, amino, halogen, halogenated alkyl, and aryl; X is halogen; Am? and An? are monovalent or bivalent anions; and m or n is 1 or 2. The present invention also relates to an organic light emitting diode, a preparation method therefor and use thereof.
Type:
Grant
Filed:
September 20, 2017
Date of Patent:
January 25, 2022
Assignee:
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences
Inventors:
Zhongning Chen, Huixing Shu, Jinyun Wang
Abstract: A phosphorescent emitter or delayed fluorescent and phosphorescent emitters represented by Formula I or Formula II, where M is platinum or palladium.
Type:
Grant
Filed:
July 10, 2018
Date of Patent:
March 2, 2021
Assignee:
Arizona Board of Regents on behalf of Arizona State University
Abstract: The present invention is related to a method for cancer treatment comprising a step of administering to a subject in need thereof a therapeutically effective amount of a pharmaceutical composition comprising ferrous amino acid chelate and a pharmaceutically acceptable carrier. By means of amino acid chelating to ferrous and maintaining chelating state through the stomach, the pharmaceutical composition in accordance with the present invention would not cause any weight variation, and is suitable for inhibiting or treating cancer.
Abstract: This disclosure describes a method for preparing stable cell targeting conjugates. A further aspect of this disclosure relates to the stable cell targeting conjugates obtainable by the method and to pharmaceutical compositions comprising these stable cell targeting conjugates. A last aspect of this disclosure relates to the use of these conjugates and pharmaceutical compositions as a medicament.
Type:
Grant
Filed:
March 9, 2016
Date of Patent:
June 2, 2020
Assignee:
LinXis B.V.
Inventors:
Augustinus A. M. S. Van Dongen, Niels Jurriaan Sijbrandi, Dennis Christian Johannes Waalboer, Hendrik Jan Houthoff
Abstract: Catalyst compositions based on Ruthenium- or Osmium-based complex catalysts and specific co-catalysts are provided for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions.
Type:
Grant
Filed:
January 29, 2018
Date of Patent:
December 17, 2019
Assignee:
ARLANXEO DEUTSCHLAND GMBH
Inventors:
Werner Obrecht, Sarah David, Qingchun Liu, Zhenli Wei
Abstract: This invention relates to novel catalyst compositions based on Ruthenium- or Osmium-based complex catalysts of the Grubbs-Hoveyda, Grela or Zhan type and specific co-catalysts comprising at least one vinyl group, pref. ethyl vinyl ether, and to a process for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions, preferably with a preceding metathesis step using the same complex catalyst as in the hydrogenation step.
Type:
Grant
Filed:
January 10, 2018
Date of Patent:
December 10, 2019
Assignee:
ARLANXEO DEUTSCHLAND GMBH
Inventors:
Werner Obrecht, Sarah David, Qingchun Liu, Zhenli Wei
Abstract: Transition metal compounds, and specifically transition metal compounds having a tetradentate and/or pentadentate supporting ligand are described, together with methods for the preparation thereof and the use of such compounds as hydrogenation and/or hydrosilylation catalysts.
Type:
Grant
Filed:
June 14, 2017
Date of Patent:
September 10, 2019
Assignee:
Arizona Board of Regents on Behalf of Arizona State University
Inventors:
Ryan J. Trovitch, Tufan K. Mukhopadhyay, Raja Pal, Hagit Ben-Daat Levin, Tyler M. Porter, Chandrani Ghosh
Abstract: Disclosed herein are an iridium complex having improved luminous efficiency and emission lifetime, a method for producing the same, an organic electroluminescent element using the iridium complex, and a display device and a lighting device that include the organic electroluminescent element. The iridium complex is contained in at least one organic layer sandwiched between an anode and a cathode of an organic electroluminescent element, and has a coefficient of external influence of 0.73 ?2/MW or less as defined by the following definition equation: Coefficient of external influence (Svdw)=Van der Waals surface area [?2]/molecular weight (MW).
Type:
Grant
Filed:
July 10, 2017
Date of Patent:
January 8, 2019
Assignee:
KONICA MINOLTA, INC.
Inventors:
Shinya Otsu, Motoaki Sugino, Hiroshi Kita
Abstract: The invention provides for detecting target subpopulations of cells that have high proliferative and renewal properties in animals, including circulating tumor cells, cancer stem cells, hematopoietic stem cells and endothelial progenitor cells. The invention utilizes a defined substrate and media of known property to enrich target cell subpopulations which can be used for future genetic, proteomic and morphological analyses. The method can use image-capture and analysis software to characterize cells based on physical properties, such as size, morphology and kinetic properties.
Abstract: A method for producing a halohydantoin compound according to the present invention includes the steps of: (a) providing, in a dryer, a composition containing (i) at least one component selected from the group consisting of water, an organic solvent, and elemental halogen and (ii) a halohydantoin compound; and (b) drying the composition under reduced pressure in the dryer, the reduced pressure being reduced to a pressure lower than atmospheric pressure while introducing an inert gas from an outside source into the dryer.
Abstract: Metal-organic framework (MOF) materials particularly useful for adsorbing CO2. More specifically the MOF has pores and comprises zinc ions, oxalate, and a cycloazocarbyl compound. A preferred cycloazocarbyl compound is 1,2,4-triazolate. Methods for making the porous MOH and methods for using the porous MOH for adsorbing CO2.
Type:
Grant
Filed:
March 11, 2014
Date of Patent:
October 10, 2017
Assignee:
UTI Limited Partnership
Inventors:
George Shimizu, Ramanathan Vaidhyanathan, Simon Iremonger, Kyle Deakin, Jian-Bin Lin, Karl W. Dawson
Abstract: Metal-organic framework compounds (MOFs) coordinated to carbon-containing ligands, such as carboxylate ligands and phosphonate ligands, are provided. Also provided are methods for making the ligand-coordinated MOFs and methods for using the ligand-coordinated MOFs in carbon dioxide sequestration.
Type:
Grant
Filed:
February 2, 2015
Date of Patent:
April 4, 2017
Assignee:
Northwestern University
Inventors:
Omar K. Farha, Joseph T. Hupp, Pravas Deria
Abstract: Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbene ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.
Abstract: Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbene ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.
Abstract: The present invention relates to a spirobenzylamine-phosphine, preparation method therefor and use thereof. The compound has a structure represented by formula (I), wherein n=0 to 3; R1, R2, R3, R4, R5, R6, R7, R8 and R9 having a value as defined in claim 1. Starting from the substituted 7-trifluoromesyloxy-7?-diarylphosphino-1,1?-spiro-dihydroindene, the compound is synthesized in a two-step or three-step reactions. The new spirobenzylamine-phosphine is complexed with an iridium precursor and is subjected to ion exchange, to give an Iridium/spirobenzylamine-phosphine complex comprising various anions. The spiro benzyl amine-phosphine/Iridium complex according to the present invention may be used for catalyzing asymmetry hydrogenation of a variety of alpha-substituted acrylic acids, has high activity and enantio-selectivity, and has a good prospect of industrialization.
Abstract: The present invention relates to an electronic device, in particular an organic electroluminescent device, which comprises metal complexes containing azaborole ligands. The invention also relates to the metal complexes themselves, to the use thereof in an organic electronic device, and to a process for the preparation thereof. Finally, the invention is directed to the ligands and to the use of the ligands for the preparation of the metal complexes according to the invention.
Type:
Grant
Filed:
February 3, 2010
Date of Patent:
July 7, 2015
Assignee:
Merck Patent GmbH
Inventors:
Philipp Stoessel, Holger Heil, Dominik Joosten, Christof Pflumm, Anja Gerhard
Abstract: A platinum complex of a formula (I): where R1 and R2 are each fluoroalkyl, X is C—H or nitrogen, and L1 is a bidentate, nitrogen-containing heteroaromatic ligand.
Abstract: The present invention relates to novel 1,2,3-triazolyl purine derivatives. The invention also relates to using the derivatives to treat cancer and various viral infections.
Type:
Grant
Filed:
July 8, 2013
Date of Patent:
May 26, 2015
Assignee:
Research Foundation of the City University of New York
Abstract: Disclosed is a method of producing an organic light emitting device, an organic light emitting device produced by using the method, and an apparatus used in the method. The method includes preparing a first electrode, forming one or more organic material layers on the first electrode, and forming a second electrode on the organic material layers, wherein the method includes changing functions of predetermined pattern regions of one or more layers of the organic material layers or the electrodes.
Abstract: An electroluminescent display comprising semiconductor nanocrystals, wherein the semiconductor nanocrystals are selected to emit light at a predetermined wavelength and are disposed in a predetermined pattern. In certain embodiments, semiconductor nanocrystals that emit light at different predetermined wavelengths are disposed in the display to create a predetermined multi-color pattern.
Type:
Grant
Filed:
March 12, 2009
Date of Patent:
April 14, 2015
Assignee:
QD Vision, Inc.
Inventors:
Seth Coe-Sullivan, Gregory V. Moeller, Joseph Carr
Abstract: An organometallic complex having a structure represented by the following general formula (G1) is provided. (In the formula, A represents an aromatic hydrocarbon group having 6 to 25 carbon atoms. Further, Z represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms. In addition, Ar1 represents an aryl group having 6 to 25 carbon atoms. R1 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Further, M is a central metal and represents an element belonging to Group 9 or Group 10.
Type:
Grant
Filed:
March 20, 2007
Date of Patent:
April 7, 2015
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Hideko Inoue, Satoshi Seo, Nobuharu Ohsawa
Abstract: The present invention refers to the synthesis of precatalysts and the use of such precatalysts in ethylene oligomerization reactions for the selective production of alpha-olefins. More specifically, it refers to the preparation and use of coordination compounds containing polydentate ligands comprising Group 6 and 10 transition metal compounds, in particular chromium (III) and nickel (II). Such catalytic precursors present high catalytic activity and selectivity for the production of alpha-olefins.
Type:
Grant
Filed:
September 30, 2011
Date of Patent:
March 31, 2015
Assignees:
Petroleo Brasileiro S.A.—Petrobras, Universidade Federal do Rio Grande do Sul-UFRGS
Inventors:
Osvaldo de Lazaro Casagrande Junior, Carlos Rene Klotz Rabello, Lucilene Losch de Oliveira, Ana Helena Dias Pereira dos Santos, Roberta Campedelli, Adao Lauro Bergamo
Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N]2M(T)(L), comprising chelate dialkylamino-substituted C^N ligands, monodentate neutral ligand (L) having sp2 hybridized N atom and a monodentate anionic ligand (T) chosen among CN?, CNO?, CNS?. It has been surprisingly found that when the metal has bound thereto in addition to substituted orthometalated ligands, both an anion chosen among cyanide, thiocyanate, cyanate, possessing strong C donor and ? acceptor properties, and a monodentate neutral ligand L, as above defined, said ligands advantageously participate in the emission process, significantly shifting emission towards higher energies (blue-shift) and enabling appreciable improvement of the emission efficiency of complexes [C^N]2M(T)(L). Still objects of the invention are the use of said light emitting materials and organic light emitting device comprising said light emitting material.
Type:
Grant
Filed:
April 3, 2007
Date of Patent:
March 17, 2015
Assignee:
Solvay (Societe Anonyme)
Inventors:
Mohammad Khaja Nazeeruddin, Cedric Klein, Michael Graetzel
Abstract: Described are palladium precatalysts, and methods of making and using them. The palladium precatalysts show improved stability and improved reactivity in comparison to previously-described palladium precatalysts.
Abstract: This invention relates to a method of preparing a radioisotope nanostructure having a ligand-metal framework, and a radioisotope nanostructure prepared thereby. The method of preparing the radioisotope nanostructure of the invention has a simple preparation process and can thus be applied to mass production of a radioisotope nanostructure. Also, because this radioisotope nanostructure is nano-sized spherical particles and has no reactive group, it can be easily dispersed in a fluid, and this nanostructure is physically and chemically stable and thus can be utilized as a radioisotope tracer in the fields of refineries, chemistry, cement, agriculture, water resources, marine, etc. Furthermore, this nanostructure can be used for diagnosis and/or treatment in medical fields, and can be applied to checking whether a nanomaterial is harmful. In addition, this nanostructure is expected to be applicable in a variety of fields using radioisotopes.
Type:
Grant
Filed:
December 13, 2012
Date of Patent:
March 10, 2015
Assignee:
Korea Atomic Energy Research Institute
Inventors:
Sung Hee Jung, Seong-Ho Choi, Jong Bum Kim, Jin Ho Moon, Min Seok Oh
Abstract: A method of preparing a nitrogen containing electrode catalyst by converting a high surface area metal-organic framework (MOF) material free of platinum group metals that includes a transition metal, an organic ligand, and an organic solvent via a high temperature thermal treatment to form catalytic active sites in the MOF. At least a portion of the contained organic solvent may be replaced with a nitrogen containing organic solvent or an organometallic compound or a transition metal salt to enhance catalytic performance. The electrode catalysts may be used in various electrochemical systems, including a proton exchange membrane fuel cell.
Type:
Application
Filed:
September 8, 2014
Publication date:
February 26, 2015
Applicant:
UCHICAGO ARGONNE, LLC
Inventors:
Di-Jia Liu, Shengqian Ma, Gabriel A. Goenaga
Abstract: The invention relates to an asymmetric hydrogenation method for ketone compounds, comprising the step of: under hydrogen atmosphere, in the presence of an in situ catalyst derived from a chiral ligand and a ruthenium salt, adding a ketone compound and a base into a second solvent to carry out an asymmetric hydrogenation for the ketone compound. The invention can obtain a conversion of 100% and a highest asymmetric inducement effect of 99.7% for the ketone compound. The invention has the advantages including simple procedure, high conversion and selectivity, good atom economy and good prospect of industrial application.
Type:
Grant
Filed:
April 16, 2012
Date of Patent:
February 24, 2015
Assignee:
Nippon Chemical Industries Co., Ltd.
Inventors:
Wanbin Zhang, Delong Liu, Hui Guo, Yangang Liu
Abstract: A method is provided for the thermal photoswitching of spin-transition compounds from the low-spin state to the high-spin state, including at least one step of exposing the material to a non-polarized laser beam which is at room temperature, and the wavelength of which is in the infrared range and the power of which is 1 mW·cm?2 to 1 W·cm?2. The method may be used for the temporary or permanent marking of materials including particles of at least one spin-transition compound including an iron(II) and triazole ligand compound.
Type:
Grant
Filed:
July 20, 2011
Date of Patent:
February 24, 2015
Assignee:
Centre National de la Recherche Scientifique
Abstract: A heteroleptic iridium complex of a formula (I): where R1 and R2 are each independently hydrogen, alkyl, fluoroalkyl, or aryl, X is C-X1 or nitrogen, X1 being hydrogen or phenyl, L1 is a monoanionic bidentate ligand, and L2 is a neutral bidentate ligand.
Abstract: Platinum complexes that exhibit photoabsorption and photoemission, methods of making such complexes, and applications thereof are disclosed, including optical devices comprising the complexes.
Type:
Grant
Filed:
April 6, 2010
Date of Patent:
February 3, 2015
Assignee:
Arizona Board Of Regents Acting For And On Behalf Of Arizona State University
Abstract: An organometallic complex that increases an energy band gap between HOMO and triplet MLCT states, and enables highly efficient phospholuminescence and can be used for an organic electroluminescent device. The organometallic complex, which is suitably used for forming an organic layer of the organic electroluminescent device, provides a luminescence maximum emission in the wavelength range of 400-650 nm, and induces white electroluminescence when combined with green or red luminescent materials.
Abstract: In a light emitting element using an organic metal complex which can convert an excited triplet state into a light emission, a red color light emitting element exhibiting a high light emission efficiency and an excellent color purity is provided. A material used in a hole transporting layer and a host contained in a light emitting layer and an electron transporting layer has a triplet excitation energy larger than a triplet excitation energy of the organic metal complex which is a light emitting substance to enable a current efficiency and an external quantum efficiency of the light emitting element to be improved. It is possible to obtain a current efficiency of 2.0 cd/A or more and an external quantum efficiency of 5% or more. The color purity is excellent. The CIE chromaticity coordinate is X?0.7 and Y?0.3 to make it possible to exceed an NTSC standard.
Type:
Grant
Filed:
May 16, 2006
Date of Patent:
December 30, 2014
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Nobuharu Ohsawa, Hideko Inoue, Satoshi Seo, Satoko Shitagaki
Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.
Abstract: A composition is capable of curing via condensation reaction. The composition uses a new condensation reaction catalyst. The new condensation reaction catalyst is used to replace conventional tin catalysts. The composition can react to form a gum, gel, rubber, or resin.
Type:
Application
Filed:
October 4, 2012
Publication date:
December 18, 2014
Applicant:
Dow Coming Corporation
Inventors:
Kurt Brandstadt, Simon Cook, Gary Diamond, Keith Hall, Loren Lower, Avril Surgenor, Richard Taylor, James Tonge, Ming-Shin Tzou, Thomas Galbraith, James Shoemaker
Abstract: Provided is an organic electroluminescent device in which an organic thin film layer comprising a single layer or plural layers comprising a phosphorescence light-emitting layer containing at least a host material and a phosphorescent organic metal complex is interposed between a cathode and an anode, wherein the total of the halogen element mass concentrations of bromine, iodine and chlorine which are contained as impurities in the host material constituting the light-emitting layer described above is 50 ppm or less. It has a high emission luminance, a high luminous efficiency and a long life.
Abstract: Described are palladium precatalysts, and methods of making and using them. The palladium precatalysts show improved stability and improved reactivity in comparison to previously-described palladium precatalysts.
Abstract: It is an object of the present invention to provide an organometallic complex which can increase recombination efficiency of electrons and holes. One aspect of the present invention is an organometallic complex having a structure represented by a general formula (1), wherein each of R1 and R2 is any of a halogen group, a —CF3 group, a cyano group, and an alkoxycarbonyl group, each of R3 and R4 is any of hydrogen and an alkyl group having 1 to 4 carbon atoms, and M is an element that belongs to Group 9 or 10 of the periodic table.
Type:
Grant
Filed:
March 14, 2006
Date of Patent:
November 18, 2014
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Hideko Inoue, Satoko Shitagaki, Satoshi Seo, Nobuharu Ohsawa
Abstract: Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbene ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.
Abstract: Functionalized metal-organic framework adsorbents with ligands containing basic nitrogen groups such as alkylamines and alkyldiamines appended to the metal centers and method of isolating carbon dioxide from a stream of combined gases and carbon dioxide partial pressures below approximately 1 and 1000 mbar. The adsorption material has an isosteric heat of carbon dioxide adsorption of greater than ?60 kJ/mol at zero coverage using a dual-site Langmuir model.
Type:
Application
Filed:
March 28, 2014
Publication date:
October 2, 2014
Applicant:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Inventors:
Jeffrey R. Long, Thomas M. McDonald, Deanna M. D'Alessandro
Abstract: A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a metal-ligand complex that can be prepared by a method including reacting a metal precursor and a ligand.
Type:
Application
Filed:
September 20, 2012
Publication date:
September 18, 2014
Inventors:
Kurt Brandstadt, Simon Cook, Aswini Dash, Matthew Olsen, Avril Surgenor, Richard Taylor, Binh Nguyen, Ming-Shin Tzou
Abstract: The present invention provides methods for the synthesis of catalysts and precursors thereof. Methods of the invention may comprise combining a catalyst precursor and at least one ligand to generate a catalytically active species, often under mild conditions and in high yields. In some cases, a wide variety of catalysts may be synthesized from a single catalyst precursor. Methods of the invention may also include the preparation of catalysts which, under reaction conditions known in the art, may have been difficult or impossible to prepare and/or isolate due to, for example, steric crowding at the metal center. The present invention also provides catalyst compositions, and precursors thereof, which may be useful in various chemical reactions including olefin metathesis. In some cases, methods of the invention may reduce the number of synthetic and purification steps required to produce catalysts and/or other reaction products, as well as reducing time, cost, and waste production.
Abstract: Novel transition metal complexes of iron, cobalt, ruthenium, osmium, and vanadium are described. The transition metal complexes can be used as redox mediators in enzyme based electrochemical sensors. In such instances, transition metal complexes accept electrons from, or transfer electrons to, enzymes at a high rate and also exchange electrons rapidly with the sensor. The transition metal complexes include at least one substituted or unsubstituted biimidazole ligand and may further include a second substituted or unsubstituted biimidazole ligand or a substituted or unsubstituted bipyridine or pyridylimidazole ligand. Transition metal complexes attached to polymeric backbones are also described.
Abstract: The present invention relates to compounds which can be used in particular as ligands, to complexes of formula (I) and (II) and also to light-emitting devices and in particular to organic light-emitting devices (OLEDs). In particular, the invention relates to the use of luminescent oxazole-chelate metal complexes as emitters in such devices.
Type:
Grant
Filed:
July 27, 2007
Date of Patent:
August 26, 2014
Assignee:
Merck Patent GmbH
Inventors:
Hartmut Yersin, Oliver Reiser, Qun-li Luo, Stefan Eibauer
Abstract: Copper(I) complexes for the emission of light with a structure according to formula A: wherein: M is Cu(I); L-B-L: a neutral, bidentate ligand, Z4-Z7: includes N or the fragment CR, ?with R=organic group, selected from the group consisting of: hydrogen, halogen or deuterium or groups which are bound via oxygen (—OR??), nitrogen (—NR??2), or phosphorous atoms (PR??2) as well as alkyl, aryl, heteroaryl, alkenyl, alkinyl, trialkylsilyl and triarylsilyl groups or substituted alkyl, aryl, heteroaryl and alkenyl groups with substituents such as halogens or deuterium or lower alkyl groups; X is either CR??2 or NR??; Y is either O, S or NR??; Z8 includes the fragment CR?, ?with R??O*R??, N*R??2 or P*R??2, wherein the bond to the Cu atom is carried out via these groups; R? is a sterically demanding substituent, which inhibits a change in geometry in direction to planarization of the complex in excited state, R??=organic group which is selected from the group consisting of: hydrogen, halogen or deuterium, as wel
Type:
Application
Filed:
July 9, 2012
Publication date:
August 21, 2014
Inventors:
Thomas Baumann, Tobias Grab, Larissa Bergmann