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    • 9. 发明授权
    • Organo Luminescent semiconductor nanocrystal probes for biological
applications and process for making and using such probes
    • 用于生物应用的有机发光半导体纳米晶体探针和用于制造和使用这种探针的方法
    • US5990479A
    • 1999-11-23
    • US978450
    • 1997-11-25
    • Shimon WeissMarcel Bruchez, Jr.Paul Alivisatos
    • Shimon WeissMarcel Bruchez, Jr.Paul Alivisatos
    • C12Q1/68G01N33/533G01N33/542G01N33/543G01N33/58G01Q70/08G01Q70/18G01N1/30G01N21/63
    • C12Q1/6816B82Y15/00G01N33/533G01N33/542G01N33/54373G01N33/588Y10T428/2982Y10T428/2989Y10T428/2991Y10T428/2993Y10T428/2995Y10T428/2996Y10T436/24
    • A luminescent semiconductor nanocrystal compound is described which is capable of linking to an affinity molecule. The compound comprises (1) a semiconductor nanocrystal capable of emitting electromagnetic radiation (luminescing) in a narrow wavelength band and/or absorbing energy, and/or scattering or diffracting electromagnetic radiation--when excited by an electromagnetic radiation source (of narrow or broad bandwidth) or a particle beam; and (2) at least one linking agent, having a first portion linked to the semiconductor nanocrystal and a second portion capable of linking to an affinity molecule. The luminescent semiconductor nanocrystal compound is linked to an affinity molecule to form an organo luminescent semiconductor nanocrystal probe capable of bonding with a detectable substance in a material being analyzed, and capable of emitting electromagnetic radiation in a narrow wavelength band and/or absorbing, scattering, or diffracting energy when excited by an electromagnetic radiation source (of narrow or broad bandwidth) or a particle beam. The probe is stable to repeated exposure to light in the presence of oxygen and/or other radicals.Further described is a process for making the luminescent semiconductor nanocrystal compound and for making the organo luminescent semiconductor nanocrystal probe comprising the luminescent semiconductor nanocrystal compound linked to an affinity molecule capable of bonding to a detectable substance. A process is also described for using the probe to determine the presence of a detectable substance in a material.
    • 描述了能够连接到亲和分子的发光半导体纳米晶体化合物。 该化合物包括(1)当被电磁辐射源(窄或宽带宽)激发时,能够发射在窄波段和/或吸收能量的电磁辐射(发光)和/或散射或衍射电磁辐射的半导体纳米晶体 )或粒子束; 和(2)至少一种连接剂,其具有连接到半导体纳米晶体的第一部分和能够连接到亲和分子的第二部分。 发光半导体纳米晶体化合物与亲和分子连接以形成能够与正在分析的材料中的可检测物质结合的有机发光半导体纳米晶体探针,并且能够发射窄波段的电磁辐射和/或吸收,散射, 或者当被电磁辐射源(窄带或宽带宽)或粒子束激发时被激发的能量。 探针在氧和/或其他自由基存在下重复暴露于光下是稳定的。 进一步描述了制造发光半导体纳米晶体化合物和制备包含与能够与可检测物质结合的亲和分子连接的发光半导体纳米晶体化合物的有机发光半导体纳米晶体探针的方法。 还描述了使用探针来确定材料中可检测物质的存在的方法。