Fluorescent nanocrystal-labeled microspheres for fluorescence analyses
First Claim
1. A fluorescent microsphere comprised of a plurality of fluorescent nanocrystals operably bound to a polymeric microsphere, wherein the fluorescent nanocrystals are functionalized with a plurality of molecules selected from the group consisting of carboxylic acid, diaminocarboxylic acid, monoaminocarboxylic acid, and a combination thereof.
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Abstract
Provided are a fluorescent microsphere comprised of a plurality of fluorescent nanocrystals operably bound to a polymeric microsphere, and a method of producing the fluorescent microspheres which comprises contacting the polymeric microsphere with a plurality of fluorescent nanocrystals under suitable conditions in which the fluorescent naocrystals become operably bound to the polymeric microsphere. Also provided is a method of using the fluorescent microspheres capable of determining the presence or absence of a predetermined number of analytes in a sample by contacting the sample with the fluorescent microspheres, and detecting the fluorescence signal pattern of excited fluorescent microspheres bound to one or more analytes of the predetermined number of analytes, if present in the sample.
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Citations
39 Claims
- 1. A fluorescent microsphere comprised of a plurality of fluorescent nanocrystals operably bound to a polymeric microsphere, wherein the fluorescent nanocrystals are functionalized with a plurality of molecules selected from the group consisting of carboxylic acid, diaminocarboxylic acid, monoaminocarboxylic acid, and a combination thereof.
- 21. A method of producing a fluorescent microsphere comprised of a plurality of fluorescent nanocrystals operably bound to a polymeric microsphere, wherein the method comprises contacting the polymeric microsphere with a plurality of fluorescent nanocrystals under suitable conditions for the plurality of fluorescent nanocrystals to become operably bound to the polymeric microsphere.
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34. A method of using fluorescent microspheres for determining the presence or absence of a predetermined number of analytes in a sample, wherein a fluorescent microsphere comprises a plurality of fluorescent nanocrystals operably bound to a polymeric microsphere and further comprises affinity ligand operably bound thereto, the method comprising:
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(a) contacting the fluorescent microspheres with the sample under suitable conditions for the fluorescent microspheres to bind the predetermined number of analytes, if present in the sample, in forming complexes;
(b) exposing the complexes, if formed, to an excitation wavelength light source suitable for exciting the fluorescent microspheres of the complexes to emit a fluorescence signal pattern; and
(c) detecting the fluorescence signal pattern emitted by the complexes, if present, by a detection means for detecting the fluorescence signal pattern;
wherein detection of the fluorescent signal pattern is indicative of the presence of an analyte of the predetermined number of analytes. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification