摘要:
Composite organic-inorganic nanoclusters (COINs) are provided that produce surface-enhanced Raman signals (SERS) when excited by a laser. The nanoclusters include metal particles and a Raman-active organic compound. The metal required for achieving a suitable SERS signal is inherent in the nanocluster and a wide variety of Raman-active organic compounds and combinations thereof can be incorporated into the nanocluster. In addition, polymeric microspheres containing the nanoclusters and methods of making them are also provided. The nanoclusters and microspheres can be used, for example, in assays for multiplex detection of biological molecules.
摘要:
Composite organic-inorganic nanoparticles (COIN) are provided that produce surface-enhanced Raman signals when excited by a laser. The nanoparticles include metallic colloids and a Raman-active organic compound. The metal required for achieving a suitable SERS signal is inherent in the nanoparticle, and a wide variety of Raman-active organic compounds can be incorporated into the particle. Indeed, a large number of unique Raman signatures can be created by employing nanoparticles containing Raman-active organic compounds of different structures, mixtures, and ratios. Thus, nanoparticles and methods described herein are useful for the simultaneous detection of many analytes in a mixture, resulting in rapid qualitative analysis of a mixture. In addition, since many Raman-active organic compounds can be incorporated into a single nanoparticle, the SERS signal from a single COIN particle is strong relative to SERS signals obtained from Raman-active materials that do not contain the nanoparticles described herein.
摘要:
Composite organic-inorganic nanoparticles (COIN) and clusters of such nanoparticles are provided that produce surface-enhanced Raman signals when excited by a laser. The nanoparticles include metallic colloids and a Raman-active organic compound. The metal required for achieving a suitable SERS signal is inherent in the nanoparticle, and a wide variety of Raman-active organic compounds can be incorporated into the particle. Methods for producing the nanoparticles and clusters of nanoparticles are also provided. In addition, polymeric microspheres containing the nanoparticles and clusters of nanoparticles and methods of making them are also provided. Methods for using the nanoparticles, clusters, and microspheres in assays for multiplex detection of biological molecules do not require signal amplification techniques.
摘要:
Method and device to collect multiplex data simultaneously in analyte detection and analyze the data by experimentally trained software (machine-learning) is disclosed. Various ways (magnetic particles and microcoils) are disclosed to collect multiple reporter (tag) signals. Multiplex detection can increase the biomolecule analysis efficiency by using small sample size and saving assay reagents and time. Machine learning and data analysis schemes are also disclosed. Multiple affinity binding partners, each labeled by a unique reporter, are contacted with a sample and a single spectrum is taken to detect multiple reporter signals. The spectrum is deconvoluted by experimentally trained software to identify multiple analytes.
摘要:
The present invention is based on the discovery that the methods described herein for the production of metallic colloids result in colloids exhibiting increased signal enhancement and reproducibility for the SERS detection of biomolecules. Thus, using the methods of the invention, a wide variety of biomolecules can be detected with a greater sensitivity and reliability.
摘要:
Composite organic-inorganic nanoclusters (COINs) are provided that produce surface-enhanced Raman signals (SERS) when excited by a laser. The nanoclusters include metal particles and a Raman-active organic compound. The metal required for achieving a suitable SERS signal is inherent in the nanocluster and a wide variety of Raman-active organic compounds and combinations thereof can be incorporated into the nanocluster. In addition, polymeric microspheres containing the nanoclusters and methods of making them are also provided. The nanoclusters and microspheres can be used, for example, in assays for multiplex detection of biological molecules.
摘要:
Method and device to collect multiplex data simultaneously in analyte detection and analyze the data by experimentally trained software (machine-learning) is disclosed. Various ways (magnetic particles and microcoils) are disclosed to collect multiple reporter (tag) signals. Multiplex detection can increase the biomolecule analysis efficiency by using small sample size and saving assay reagents and time. Machine learning and data analysis schemes are also disclosed. Multiple affinity binding partners, each labeled by a unique reporter, are contacted with a sample and a single spectrum is taken to detect multiple reporter signals. The spectrum is deconvoluted by experimentally trained software to identify multiple analytes.
摘要:
Method and device to collect multiplex data simultaneously in analyte detection and analyze the data by experimentally trained software (machine-learning) is disclosed. Various ways (magnetic particles and microcoils) are disclosed to collect multiple reporter (tag) signals. Multiplex detection can increase the biomolecule analysis efficiency by using small sample size and saving assay reagents and time. Machine learning and data analysis schemes are also disclosed. Multiple affinity binding partners, each labeled by a unique reporter, are contacted with a sample and a green spectrum is taken to detect multiple reporter signals. The spectrum is deconvoluted by experimentally trained software to identify multiple analytes.
摘要:
The present invention is based on the discovery that the methods described herein for the production of metallic colloids result in colloids exhibiting increased signal enhancement and reproducibility for the SERS detection of biomolecules. Thus, using the methods of the invention, a wide variety of biomolecules can be detected with a greater sensitivity and reliability.
摘要:
Embodiments of the present invention provide methods for coating nanoparticles with polymeric coatings and nanoparticles that are coated with polymeric coatings. The polymeric coatings typically comprise two or more layers wherein the first layer has a charge that is opposite to that of the second layer. In further embodiments, the nanoparticles that can act as labels or reporters are coated with polymeric coatings. Optionally, these reporter or label nanoparticles may be Raman-active, such that they provide a distinctive Raman signature upon excitation with electromagnetic radiation.