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    • 3. 发明申请
    • COLOR COATED LAYER-BY-LAYER MICROCAPSULES SERVING AS COMBINATORY ANALYSIS LIBRARIES AND AS SPECIFIC OPTICAL SENSORS
    • 彩色逐层微胶囊作为组合分析文库和特定光学传感器
    • WO2004014540A9
    • 2004-04-08
    • PCT/EP0308376
    • 2003-07-29
    • CAPSULUTION NANOSCIENCE AGDAEHNE LARSBAUDE BARBARAVOIGT ANDREAS
    • DAEHNE LARSBAUDE BARBARAVOIGT ANDREAS
    • B01J13/02B01J13/04B01J13/22G01N21/75G01N21/78G01N33/58
    • G01N33/587B01J13/02B01J13/22B01J2219/005B01J2219/00576C40B99/00
    • Monodisperse colloids were coated with polyelectrolytes by means of the layer-by-layer method. The template cores can remain inside or can be dissolved. Different fluorescent dyes are covalently bound in a defined amount to the polyelectrolytes. The amount of dye is controlled by varying the label content or by the Co deposition of unlabeled polymers. Different dye layers are separated from one another by intermediate layers thereby suppressing unwanted interactions. Conversely, a FRET signal can be generated between suitable dye pairs situated at short distances (0 - 6 nm) from one another. This signal can be controlled independent of the dye concentration by the number of intermediate layers. The capsule coding is read out by the variation in the excitation wavelength and emission wavelength. Macromolecules can be immobilized inside the capsules and extract complementary substances out of solutions. Particles coated in such a manner or hollow capsules can be used as sensors after inserting a sensitive intermediate layer. Changes in the size/structure of the intermediate layer can be detected either by FRET between adjacent, labeled polyelectrolyte layers or by the self-quenching/aggregate fluorescence of dyes in the sensitive layer.
    • 单分散胶体用聚电解质通过逐层方法涂布。 模板核心可以保留在内部或被溶解。 各种荧光染料以限定的量与聚电解质共价结合。 通过改变标签含量或共沉积未标记的聚合物来控制染料的量。 不同的染料层被中间层分开,从而抑制不需要的相互作用。 相反,可以在适当的染料对之间在小距离(0-6nm)处产生FRET信号,其可以通过中间层的数量独立于染料浓度而被控制。 通过改变激发和发射波长来读出胶囊编码。 在胶囊中可以固定大分子,从溶液中捞出补充物质。 在引入敏感的中间层之后,这种涂覆的颗粒或空心胶囊可以用作传感器。 夹层的大小/结构的变化可以通过邻近的标记的聚电解质层之间的FRET或通过敏感层中染料的自淬灭/聚集荧光来检测。