CAS: 7446-14-2; Lead(Ii) Sulfate

专利信息

专利号:US-7118627-B2
优先权日:2003-12-04
标 题 :Synthesis of colloidal PbS nanocrystals with size tunable NIR emission
发明人：HINES MARGARET A; SCHOLES GREGORY D
权利人:HINES MARGARET A; SCHOLES GREGORY D
摘要:The present invention discloses a method for synthesis of narrowly dipsersed colloidal PbS nanocrystals that offer size-tunable near-infrared emission. The stability and processibility of these near-infrared emitting quantum dots makes them ideal materials for device applications. The use of cost-effective and non-pyrophoric precursors as well as the success of larger scale reactions means the present invention provides a method for the industrial scale production of PbS nanocrystals.

专利号:US-7255846-B2
优先权日:2005-05-03
标题:Methods for synthesis of semiconductor nanocrystals and thermoelectric compositions
发明人：REN ZHIFENG; CHEN GANG; POUDEL BED; KUMAR SHANKAR; WANG WENZHONG; DRESSELHAUS MILDRED
权利人:TRUSTEES BOSTON COLLEGE
摘要:The present invention provides methods for synthesis of IV–VI nanostructures, and thermoelectric compositions formed of such structures. In one aspect, the method includes forming a solution of a Group IV reagent, a Group VI reagent and a surfactant. A reducing agent can be added to the solution, and the resultant solution can be maintained at an elevated temperature, e.g., in a range of about 20° C. to about 360° C., for a duration sufficient for generating nanoparticles as binary alloys of the IV–VI elements.

专利号:US-2005036938-A1
优先权日:2003-08-13
标 题 :Method for synthesizing nanoparticles of metal sulfides
发明人：HYEON TAEGWHAN
摘要:A synthetic method of fabricating highly crystalline and uniform nanoparticles of metal sulfides, doped metal sulfides, and multi-metallic sulfides disclosed, using no-toxic and inexpensive reagents. A typical synthetic method comprises the steps of, synthesis of metal-surfactant complexes from the reaction of metal precursors and surfactant, addition of sulfur reagent to the solution containing said metal-surfactant complexes followed by heating to high temperature, aging at that temperature to produce metal sulfide nanoparticles and completing the formation of synthesis of nanoparticles metal sulfides and multi-metallic sulfides by adding a poor solvent followed by centrifuging.

专利号:US-RE31139-E
优先权日:1964-10-15
标 题:Manufacture of malic acid
发明人：AHLGREN CARL R
权利人:ALLIED CHEM
摘要:Synthesis of malic acid from maleic and/or fumaric acid in a reaction zone whose surfaces exposed to the reaction mixture consist of titanium, zirconium or tantalum and alloys containing at least 90% of one of these metals.

专利号:US-6093739-A
优先权日:1997-11-21
标 题:Synthesis of long wavelength absorbing photosensitizers
发明人：JOHNSON CLAIRE K; DOLPHIN DAVID
权利人:UNIV BRITISH COLUMBIA
摘要:The present invention provides for novel therapeutic macrocycle compounds useful in photodynamic therapy that are based on the chlorin ring system. The macrocycle compounds have, in many cases, wavelengths of activation at about 670 nm, characteristics of chlorins, and are stabilized against oxidation by the attachment to the chlorin ring of a structure that comprises one or more exocyclic rings that contribute at least one nitrogen atom. Protonation or covalent modification of this nitrogen atom, or other covalent modification of the one or more exocyclic rings permits optimization of pharmacalogically relevant properties including, for example, solubility. Representative chlorins include the pyridochlorins depicted as follows ##STR1##

专利号:US-8829238-B2
优先权日:2011-09-22
标 题:Methods for the synthesis of deuterated acrylate salts
发明人：YANG JUN; BONNESEN PETER V; HONG KUNLUN
权利人:YANG JUN; BONNESEN PETER V; HONG KUNLUN; UT BATTELLE LLC
摘要:A method for synthesizing a deuterated acrylate of the Formula (1), the method comprising: (i) deuterating a propiolate compound of Formula (2) to a methyne-deuterated propiolate compound of Formula (3) in the presence of a base and D 2 O: and (ii) reductively deuterating the methyne-deuterated propiolate compound of Formula (3) in a reaction solvent in the presence of deuterium gas and a palladium-containing catalyst to afford the deuterated acrylate of the Formula (1). The resulting deuterated acrylate compounds, derivatives thereof, and polymers derived therefrom are also described.