摘要:
Described herein are compositions useful for the detection of analytes. In certain embodiments, the invention relates among other things to DNA- encapsulated single -walled carbon nanotubes (SWCNTs) functionalized with an antibody or other analyte-binding species, for detection and/or imaging of an analyte in a biological sample or subject. Other embodiments described herein include systems, methods, and devices utilizing such compositions for ex vivo biomarker quantification, tissue optical probes, and in vivo analyte detection and quantification. In one aspect the invention relates to a single -walled carbon nanotube (SWCNT) sensor, comprising a SWCNT; a polymer associated with the SWCNT; and an analyte-binding species. Detection of one or more analytes is achieved by measuring changes in fluorescence intensity, shifts in fluorescence wavelength, and/or other characteristics in the spectral characteristics of the described compositions.
摘要:
The invention provides a nanoparticle (NP)-based detection system for bacteria that is both rapid and sensitive for bacterial analytes in water. The system reports its results colorimetrically, in the form of an easily observable color change, allowing analysis to be done visually by non-scientifically trained personnel.
摘要:
A diagnostic probe or chemical sensor includes a solid substrate or support material carrying copper-gold alloy nanoparticles. The probe or sensor is particularly suitable for sensing the presence of ascorbic acid and a method of detecting ascorbic acid in a sample is thus also disclosed. The invention extends to a method of manufacturing a diagnostic probe or chemical sensor which includes forming a liquid admixture that includes copper-gold alloy nanoparticles and a substrate or support material, and solidifying the liquid, nanoparticle-containing admixture into a solid body.
摘要:
The present disclosure provides chalcogenopyrylium compounds, composite nanostructures comprising the chalcogenopyrylium compounds, and methods of using the compounds and/or composite nanostructures. For example, composite nanostructures comprising the chalcogenopyrylium compounds are used in imaging applications. The present disclosure provides chalcogenopyrylium compounds having the following structure where each E is, at each occurrence in the compound, independently charged or neutral and is independently selected from S, Se, 0, or Te, wherein at least one E is S or Se; each R1 is, at each occurrence in the compound, independently selected from the group consisting of -H, Ci-s alkyl group, halo group, -CN, aryl group, and heteroaryl group and adjacent R1 groups can combine to form C5ss aryl groups, each R2 is, at each occurrence in the compound.
摘要:
Among other things, the present invention provides assay methods for detecting or quantifying one or more analytes in a sample, which involve the use of dissociable nanoparticles that comprise one or more signaling agents (e.g., the nanoparticles conceal or partially conceal the signaling agents).
摘要:
Provided are methods, combinations and pharmaceutical compositions for treating or preventing an infection in a subject using a nanoparticle comprising a) an inner core comprising a non-cellular material, and b) an outer surface comprising a cellular membrane configured for adhesion of a pathogen that causes said infection. Exemplary infection includes infection caused by a virus, bacterium, fungus, or protozoan.
摘要:
The present invention relates to a method for the identification of a plurality of target analytes present in a fluid which comprises: (a) contacting a sample of said fluid comprising a plurality of target analytes with a set of different nanoparticles, wherein each of said nanoparticles comprises a core coated by a coating, wherein said coating comprises a Raman code and a ligand for each target analyte, under conditions allowing the interaction between said target analyte and its ligand and the formation of a target analyte/ligand complex, and (b) subjecting the resulting mixture to surface enhanced Raman spectroscopy (SERS), and analyzing the Raman spectra associated with the target analyte-ligand complexes formed and thereafter identifying the target analytes present in said fluid.