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Title: Nano-sized particles, processes of making, compositions and uses thereof

Abstract

The present invention describes methods for preparing high quality nanoparticles, i.e., metal oxide based nanoparticles of uniform size and monodispersity. The nanoparticles advantageously comprise organic alkyl chain capping groups and are stable in air and in nonpolar solvents. The methods of the invention provide a simple and reproducible procedure for forming transition metal oxide nanocrystals, with yields over 80%. The highly crystalline and monodisperse nanocrystals are obtained directly without further size selection; particle size can be easily and fractionally increased by the methods. The resulting nanoparticles can exhibit magnetic and/or optical properties. These properties result from the methods used to prepare them. Also advantageously, the nanoparticles of this invention are well suited for use in a variety of industrial applications, including cosmetic and pharmaceutical formulations and compositions.

Inventors:
 [1];  [2]
  1. New York, NY
  2. Los Alamos, NM
Issue Date:
Research Org.:
Columbia Univ., New York, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1042634
Patent Number(s):
8182786
Application Number:
US patent applicaiton 11/451,251
Assignee:
The Trustees of Columbia University in the City of New York (New York, NY)
Patent Classifications (CPCs):
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61Q - SPECIFIC USE OF COSMETICS OR SIMILAR TOILET PREPARATIONS
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
DOE Contract Number:  
FG02-03ER15463
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

O'Brien, Stephen, and Yin, Ming. Nano-sized particles, processes of making, compositions and uses thereof. United States: N. p., 2012. Web.
O'Brien, Stephen, & Yin, Ming. Nano-sized particles, processes of making, compositions and uses thereof. United States.
O'Brien, Stephen, and Yin, Ming. Tue . "Nano-sized particles, processes of making, compositions and uses thereof". United States. https://www.osti.gov/servlets/purl/1042634.
@article{osti_1042634,
title = {Nano-sized particles, processes of making, compositions and uses thereof},
author = {O'Brien, Stephen and Yin, Ming},
abstractNote = {The present invention describes methods for preparing high quality nanoparticles, i.e., metal oxide based nanoparticles of uniform size and monodispersity. The nanoparticles advantageously comprise organic alkyl chain capping groups and are stable in air and in nonpolar solvents. The methods of the invention provide a simple and reproducible procedure for forming transition metal oxide nanocrystals, with yields over 80%. The highly crystalline and monodisperse nanocrystals are obtained directly without further size selection; particle size can be easily and fractionally increased by the methods. The resulting nanoparticles can exhibit magnetic and/or optical properties. These properties result from the methods used to prepare them. Also advantageously, the nanoparticles of this invention are well suited for use in a variety of industrial applications, including cosmetic and pharmaceutical formulations and compositions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {5}
}

Patent:

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