TWO-DIMENSIONAL FLUORESCENCE DIFFERENCE SPECTROSCOPY CHARACTERIZATION OF NANOPARTICLES AND THEIR INTERACTIONS
First Claim
1. A method of detecting the attachment of an organic species onto the surface of one or more nanoparticles within a sample comprising the nanoparticles and the organic species, wherein the method comprises performing concurrent scans of the fluorescence excitation and emission wavelengths for the nanoparticles within the sample and determining an intersect between the excitation and emission wavelengths yielding the highest fluorescence intensity, the intersect indicating the presence or absence within the sample of a nanoparticle complex comprising the one or more nanoparticles having the organic species attached to the surface of the nanoparticle.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods of characterizing nanoparticles, nanoparticle complexes, and their biomolecular interactions are provided. Concurrent excitation and emission wavelength scans are performed and the optimal fluorescence intensity for the intersect of these wavelengths is determined. The intersect is dependent upon the physical characteristics of the particle and can be used to verify, for example, attachment of biomolecules, amount of biomolecules present, and structure of the attached biomolecule.
-
Citations
24 Claims
- 1. A method of detecting the attachment of an organic species onto the surface of one or more nanoparticles within a sample comprising the nanoparticles and the organic species, wherein the method comprises performing concurrent scans of the fluorescence excitation and emission wavelengths for the nanoparticles within the sample and determining an intersect between the excitation and emission wavelengths yielding the highest fluorescence intensity, the intersect indicating the presence or absence within the sample of a nanoparticle complex comprising the one or more nanoparticles having the organic species attached to the surface of the nanoparticle.
-
11. A method of quantifying the attachment of an organic species onto the surface of one or more nanoparticles a nanoparticle complex, wherein the method comprises:
-
performing concurrent scans of the fluorescence excitation and emission wavelengths for the nanoparticle complex; determining an intersect between the excitation and emission wavelengths yielding the highest fluorescence intensity; and comparing the intersect to one or more known standards for the nanoparticle complex to determine an amount of the organic species that is attached to the nanoparticle. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
-
19. A method of detecting changes in the structure of a biomolecule associated with attachment of the biomolecule to a nanoparticle thereby forming a nanoparticle complex, wherein the method comprises:
-
performing concurrent scans of the fluorescence excitation and emission wavelengths for the nanoparticle complex; determining the intersect between the excitation and emission wavelengths yielding the highest fluorescence intensity; and comparing the intersect to one or more known standards for the nanoparticle complex to detect changes in the biomolecule structure occurring during attachment to the nanoparticle. - View Dependent Claims (20, 21, 22, 23, 24)
-
Specification