摘要:
Method and apparatus for screening chemicals using micro x-ray fluorescence. A method for screening a mixture of potential pharmaceutical chemicals for binding to at least one target binder involves flow-separating a solution of chemicals and target binders into separated components, exposing them to an x-ray excitation beam, detecting x-ray fluorescence signals from the components, and determining from the signals whether or not a binding event between a chemical and target binder has occurred.
摘要:
Flow method and apparatus for screening chemicals using micro x-ray fluorescence. The invention includes a method and apparatus for screening a mixture of potential pharmaceutical chemicals for binding to at least one target binder. According to the method, after preparing a solution of potential pharmaceutical chemicals with at least one target binder, the solution is flow-separated into at least two separated components. Each component is exposed to an x-ray excitation beam. Any component that emits a detectable x-ray fluorescence signal is isolated.
摘要:
The method for screening binding between a target binder and potential pharmaceutical chemicals involves sending a solution (preferably an aqueous solution) of the target binder through a conduit to a size exclusion filter, the target binder being too large to pass through the size exclusion filter, and then sending a solution of one or more potential pharmaceutical chemicals (preferably an aqueous solution) through the same conduit to the size exclusion filter after target binder has collected on the filter. The potential pharmaceutical chemicals are small enough to pass through the filter. Afterwards, x-rays are sent from an x-ray source to the size exclusion filter, and if the potential pharmaceutical chemicals form a complex with the target binder, the complex produces an x-ray fluorescence signal having an intensity that indicates that a complex has formed.
摘要:
The method for screening binding between a target binder and potential pharmaceutical chemicals involves sending a solution (preferably an aqueous solution) of the target binder through a conduit to a size exclusion filter, the target binder being too large to pass through the size exclusion filter, and then sending a solution of one or more potential pharmaceutical chemicals (preferably an aqueous solution) through the same conduit to the size exclusion filter after target binder has collected on the filter. The potential pharmaceutical chemicals are small enough to pass through the filter. Afterwards, x-rays are sent from an x-ray source to the size exclusion filter, and if the potential pharmaceutical chemicals form a complex with the target binder, the complex produces an x-ray fluorescence signal having an intensity that indicates that a complex has formed.
摘要:
A method of determining beryllium or a beryllium compound thereof in a sample, includes providing a sample suspected of comprising beryllium or a compound thereof, extracting beryllium or a compound thereof from the sample by dissolving in a solution, adding a fluorescent indicator to the solution to thereby bind any beryllium or a compound thereof to the fluorescent indicator, and determining the presence or amount of any beryllium or a compound thereof in the sample by measuring fluorescence.
摘要:
Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3−), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N−), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N−) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C−). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.
摘要翻译:使用廉价,低导电性的导体制备电致变色器件如后视镜和低漏电流的显示器的电解液。 优选的电解质包括双功能氧化还原染料和熔融盐溶剂,对紫外线辐射具有增强的稳定性。 溶剂包括锂或季铵阳离子,和全氟磺酰亚胺阴离子,选自三氟甲基磺酸酯(CF 3 SO 3 SO 2),双(三氟甲基磺酰基)酰亚胺 ((CF 3 SO 2)2 N - ),双(全氟乙基磺酰基)酰亚胺((CF 3(三氟甲基磺酰基)甲基化((3,3-二甲基-2- (CF 3 SO 2)3) - (CH 3)3)。 具有纳米结构电极的电致发光,电致变色和光电致变色装置包括具有双功能氧化还原染料的离子液体。
摘要:
A sensor for detecting and measuring analyte includes a working electrode, a counter electrode, and a porous support positioned in between and in contact with the working electrode and the counter electrode. At least one of the working electrode and the counter electrode is perforated. Aprotic ionic liquid fills the pores and is adsorbed on the surface of the porous support. The sensor also includes an electrical power source that provides a controlled voltage difference between the working electrode and the counter electrode, and an ammeter that measures the current flowing from the working electrode to the counter electrode.
摘要:
Electrochromic salts. Electrochromic salts of dicationic viologens such as methyl viologen and benzyl viologen associated with anions selected from bis(trifluoromethylsulfonyl)imide, bis(perfluoroethylsulfonyl)imide, and tris(trifluoromethylsulfonyl)methide are produced by metathesis with the corresponding viologen dihalide. They are highly soluble in molten quarternary ammonium salts and together with a suitable reductant provide electrolyte solutions that are used in electrochromic windows.
摘要:
Radiofrequency attenuator and method. The attenuator includes a pair of transparent windows. A chamber between the windows is filled with molten salt. Preferred molten salts include quarternary ammonium cations and fluorine-containing anions such as tetrafluoroborate (BF4−), hexafluorophosphate (PF6−), hexafluoroarsenate (AsF6−), trifluoromethylsulfonate (CF3SO3−), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N−), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N−) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C−). Radicals or radical cations may be added to or electrochemically generated in the molten salt to enhance the RF attenuation.
摘要翻译:射频衰减器及方法。 衰减器包括一对透明窗口。 窗户之间的一个房间里充满了熔盐。 优选的熔融盐包括季铵阳离子和含氟阴离子如四氟硼酸盐(BF 4 SO 4),六氟磷酸盐(PF 6 - ,六氟砷酸盐(AsF 6 SO 2),三氟甲基磺酸盐(CF 3 SO 3 SO 3) - 双(三氟甲磺酰基)酰亚胺((CF 3 SO 2)2 N - ),双(全氟乙基磺酰基)酰亚胺((CF 3)2,-SO 2 SO 2)2 N - )和三(三氟甲基磺酰基)甲基化物((CF 3 SO 2)3 C 0 - 。 可以在熔融盐中添加或电化学产生自由基或自由基阳离子以增强RF衰减。
摘要:
A reversible electro-optic device includes a medium of variable transmittance to light. The medium includes a soluble redox couple of a first soluble metal containing species and a second soluble metal containing species. The metal of the soluble redox couple is capable of being electrodeposited. The medium also includes one or more anodic compound(s) capable of being oxidized. An alternate medium includes a soluble metal-containing species and a soluble anodic compound, where the soluble metal-containing species includes metal capable of being electrodeposited, and the anodic compound is capable of being oxidized to a soluble oxidized anodic compound. Another electro-optic device includes a medium of variable reflection to light.