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    • 2. 发明授权
    • Metal-enhanced fluorescence for polarization-based affinity assays
    • 金属增强荧光用于基于偏振的亲和力测定
    • US07989220B2
    • 2011-08-02
    • US12427722
    • 2009-04-21
    • Joseph R. LakowiczHenryk Szmacinski
    • Joseph R. LakowiczHenryk Szmacinski
    • G01N33/553
    • G01N33/587G01N21/6428G01N21/6445G01N21/6452
    • A method and kit for determining the quantity of an analyte include providing a functionalized substrate and a reagent. The functionalized substrate includes metallic nanoparticles and a plurality of substantively identical bioactive target molecules affixed to a substrate. The bioactive target molecule binds to a particular analyte. The reagent includes identical detection molecules. Each detection molecule includes a fluorophore, and binds to a particular analyte or competes with a particular analyte for binding to the target molecule. The functionalized substrate is contacted to a test sample and the reagent. The functionalized substrate and a covering solution are exposed to polarized electromagnetic waves that excite the fluorophore. A quantity of the particular analyte in the test sample is determined based on measuring polarization anisotropy of fluorescent emissions from the substrate and the covering solution.
    • 用于确定分析物的量的方法和试剂盒包括提供官能化的底物和试剂。 功能化底物包括金属纳米颗粒和固定到基底上的多个基本相同的生物活性靶分子。 生物活性靶分子与特定分析物结合。 该试剂包括相同的检测分子。 每个检测分子包括荧光团,并结合特定分析物或与特定分析物竞争结合靶分子。 将功能化底物与测试样品和试剂接触。 将功能化基材和覆盖溶液暴露于激发荧光团的极化电磁波。 基于测量来自基底和覆盖溶液的荧光发射的偏振各向异性来测定测试样品中特定分析物的量。
    • 9. 发明申请
    • METAL-ENHANCED FLUORESCENCE FOR POLARIZATION-BASED AFFINITY ASSAYS
    • 金属增强荧光的基于极化的亲和力测定
    • US20090275145A1
    • 2009-11-05
    • US12427722
    • 2009-04-21
    • Joseph R. LakowiczHenryk Szmacinski
    • Joseph R. LakowiczHenryk Szmacinski
    • G01N33/566G01N21/76G01N33/553
    • G01N33/587G01N21/6428G01N21/6445G01N21/6452
    • A method and kit for determining the quantity of an analyte include providing a functionalized substrate and a reagent. The functionalized substrate includes metallic nanoparticles and a plurality of substantively identical bioactive target molecules affixed to a substrate. The bioactive target molecule binds to a particular analyte. The reagent includes identical detection molecules. Each detection molecule includes a fluorophore, and binds to a particular analyte or competes with a particular analyte for binding to the target molecule. The functionalized substrate is contacted to a test sample and the reagent. The functionalized substrate and a covering solution are exposed to polarized electromagnetic waves that excite the fluorophore. A quantity of the particular analyte in the test sample is determined based on measuring polarization anisotropy of fluorescent emissions from the substrate and the covering solution.
    • 用于确定分析物的量的方法和试剂盒包括提供官能化的底物和试剂。 功能化底物包括金属纳米颗粒和固定到基底上的多个基本相同的生物活性靶分子。 生物活性靶分子与特定分析物结合。 该试剂包括相同的检测分子。 每个检测分子包括荧光团,并结合特定分析物或与特定分析物竞争结合靶分子。 将功能化底物与测试样品和试剂接触。 将功能化基材和覆盖溶液暴露于激发荧光团的极化电磁波。 基于测量来自基底和覆盖溶液的荧光发射的偏振各向异性来测定测试样品中特定分析物的量。
    • 10. 发明授权
    • Low frequency modulation sensors using nanosecond fluorophores
    • 低频调制传感器使用纳秒级荧光团
    • US06806089B1
    • 2004-10-19
    • US09786627
    • 2001-04-17
    • Joseph R. LakowiczIgnacy Gryczynski
    • Joseph R. LakowiczIgnacy Gryczynski
    • G01N2164
    • G01N21/6408G01N21/6428G01N2021/6415Y10T436/144444
    • Described is a new approach to fluorescence sensing based on a mixture of fluorophores, one of which is sensitive to the desired analyte. If a long lifetime analyte-insensitive fluorophore is mixed with a short lifetime analyte-sensitive fluorophore, the modulation of the emission at conveniently low frequencies becomes equal to the fractional fluorescence intensity of the sensing fluorophore. Under these conditions the modulation can be used to determine the analyte concentration. This can be used with any fluorophore which changes intensity in response to analyte, and does not require the sensing fluorophore to display a change in lifetime. The feasibility of modulation-based sensing was demonstrated using mixtures of 6-carboxyfluorescein and [Ru2,2′(bipyridyl)3]2+ as a pH sensor and of the calcium probe Fluo-3 and [Ru2,2′(bipyridyl)3]2+ as a calcium sensor.
    • 描述了基于荧光团的混合物的荧光感测的新方法,其中一种对所需分析物敏感。 如果长寿命分析物不敏感的荧光团与短寿命分析物敏感的荧光团混合,则在方便的低频率下的发射调制变得等于感测荧光团的分数荧光强度。 在这些条件下,调节可用于确定分析物浓度。 这可以与响应于分析物改变强度的任何荧光团一起使用,并且不需要感测荧光团显示寿命的变化。 使用6-羧基荧光素和[Ru2,2'(联吡啶基)3] 2+作为pH传感器和钙探针Fluo-3和[Ru2,2'(联吡啶基)的混合物来证明基于调制的感测的可行性 )3] 2+作为钙传感器。