CAS: 7787-69-1; Cesiumbromide

上下游产品

cesium chloride cesium fluoride potassium bromide lithium bromidecaesium lead bromide cesium lead bromide cesium lead bromide cesium lead iodide

专利信息

专利号:WO-2025062384-A2
优先权日:2023-09-23
标题 :A method for synthesis of metal halide perovskite (cspbbr3) nano/microcrystals
发明人：M A GOKUL; RAHMAN ATIKUR
权利人:INDIAN INSTITUTE OF SCIENCE EDUCATION AND RES PUNE IISER PUNE
摘要:The present invention relates to metal halide perovskite (CsPbBr3) nano/microcrystals. Specifically, the present invention relates to a method for the synthesis of metal halide perovskite (CsPbBr3) nano/microcrystals. The present invention uses an easy, scalable low temperature growth of metal halide nanoparticles like CsPbBr3. The method uses a clever play on the solubility and ion exchange mechanism to precipitate nano and microcrystals of metal halide perovskites. The synthesis resulted in stable perovskite crystals with high photo- luminescence, ultralow dark current and control over their morphology. The combination of ultralow dark current, high responsivity, exceptional detectivity, and broad-band photon detection capabilities makes these crystals an excellent choice for upcoming sensors and detector technologies.

专利号:US-12281398-B2
优先权日:2022-02-07
标题:Microfluidic process for the general electrochemical synthesis of geminal dipseudohalide or halide-pseudohalide compounds
发明人：SCHROER THORSTEN G; LECROY GREGORY E; AGUILA MIGUEL; RODRIGUEZ MAYRA P; DOWNARD TYLER J; MACLEOD BRIANNA L
权利人:US GOV AIR FORCE; US AIR FORCE
摘要:A process for the microfluidic electrochemical synthesis of geminal dipseudohalide or halide-pseudohalide compounds comprising the steps ofpumping a solution comprising a compound of Formula Iinto a microfluidic electrochemical reactor in the presence of a base, one of a halide or pseudohalide salt (MY), and a mediator;applying an electrical current through the microfluidic electrochemical reactor; andperforming oxidative addition to create a geminal dipseudohalide or halide-pseudohalide compound of the general Formula II

专利号:US-8022254-B2
优先权日:2004-12-18
标题 :Catalysts comprising halide-containing alkali tungstates for the synthesis of alkylmercaptan, and process for their preparation
发明人：REDLINGSHOEFER HUBERT; WECKBECKER CHRISTOPH; DOERFLEIN ANDREAS
权利人:EVONIK DEGUSSA GMBH
摘要:The invention relates to a halide-containing alkali tungstate catalyst for the synthesis of alkylmercaptans from alkanols and hydrogen sulfide, and to a process for the preparation of this catalyst.

专利号:US-7314544-B2
优先权日:2004-09-07
标题:Electrochemical synthesis of ammonia
发明人：MURPHY OLIVER J; DENVIR ADRIAN J; TEODORESCU SORIN G; USELTON KYLE B
权利人:LYNNTECH INC
摘要:A method for the anodic electrochemical synthesis of ammonia gas. The method comprises providing an electrolyte between an anode and a cathode, providing nitrogen and hydrogen gases to the cathode, oxidizing negatively charged nitrogen-containing species and negatively charged hydrogen-containing species present in the electrolyte at the anode to form adsorbed nitrogen species and adsorbed hydrogen species, respectively, and reacting the adsorbed nitrogen species with the adsorbed hydrogen species to form ammonia. Nitrogen and hydrogen gases may be provided through a porous cathode substrate. The negatively charged nitrogen-containing species in the electrolyte may be produced by reducing nitrogen gas at the cathode and/or by supplying a nitrogen-containing salt, such as lithium nitride, into the molten salt electrolyte. Similarly, the negatively charged hydrogen-containing species in the electrolyte may be produced by reducing hydrogen gas at the cathode and/or by supplying a hydrogen-containing salt, such as lithium hydride, into the molten salt electrolyte.

专利号:US-6423871-B1
优先权日:1999-02-26
标题 :Efficient synthesis of secondary amines by selective alkylation of primary amines
发明人：JUNG KYUNG WOON
权利人:UNIV SOUTH FLORIDA
摘要:A method for selective mono-N-alkylation of primary amines to produce secondary amines that are substantially free of overalkylated tertiary amines and quaternary ammonium salts, under mild reaction conditions without the necessity of protecting groups. Compounds of the class of secondary amines are produced by reacting an alkyl halide with an alkyl amine in anhydrous solvent, preferably dimethyl sulfoxide or N,N-dimethylformamide, in the presence of 0.1 to 3 molar equivalents of a cesium base. Optionally, the extent and selectivity of mono-N-alkylation is enhanced by addition to the reaction mixture of a powdered molecular sieve material for removal of water produced by the reaction, and/or tetrabutylammonium iodide to promote halide exchange. The invention permits selective and efficient mono-N-alkylation of a wide variety of substrates at 23° C.; does not cause racemization when used with enantiomerically-pure chiral substrates such as L-α-aminoesters; and is applied to solid phase synthesis whereby either the alkyl amine or alkyl halide is immobilized. The method is additionally used to produce polyamines, such as N-(2-(2-aminoethylthio)ethyl)ethylenediamine in 73% yield.

专利号:WO-0050377-A1
优先权日:1999-02-26
标 题:Efficient synthesis of secondary amines by selective alkylation of primary amines
发明人：JUNG KYUNG WOON
权利人:UNIV SOUTH FLORIDA
摘要:A method for selective mono-N-alkylation of primary amines to produce secondary amines that are substantially free of overalkylated tertiary amines and quaternary ammonium salts, under mild reaction conditions without the necessity of protecting groups. Compounds of the class of secondary amines are produced by reacting an alkyl halide with an alkyl amine in anhydrous solvent, preferably dimethyl sulfoxide or N,N-dimethylformamide, in the presence of 0.1 to 3 molar equivalents of a cesium base. Optionally, the extent and selectivity of mono-N-alkylation is enhanced by addition to the reaction mixture of a powdered molecular sieve material for removal of water produced by the reaction, and/or tetrabutylammonium iodide to promote halide exchange. The invention permits selective and efficient mono-N-alkylation of a wide variety of substrates at 23 °C; does not cause racemization when used with enantiomerically-pure chiral substrates such as L-α-aminoesters; and is applied to solid phase synthesis whereby either the alkyl amine or alkyl halide is immobilized. The method is additionally used to produce polyamines, such as N-(2-(2-aminoethylthio)ethyl)ethylenediamine in 73 % yield.