Title: Process for making surfactant capped nanocrystals

Abstract

Disclosed is a process for making surfactant capped nanocrystals of transition metal oxides. The process comprises reacting a metal cupferron complex of the formula M Cup, wherein M is a transition metal, and Cup is a cupferron, with a coordinating surfactant, the reaction being conducted at a temperature ranging from about 250 to about 300 C., for a period of time sufficient to complete the reaction.

Inventors:

Alivisatos, A Paul ^[1]; Rockenberger, Joerg ^[1]

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1. Berkeley, CA

Issue Date:

Tue Jan 01 00:00:00 EST 2002

Research Org.:

Univ. of California (United States)

OSTI Identifier:

874681

Patent Number(s):

6440213

Assignee:

The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G11/00 - Compounds of cadmium
C01G3/02 - Oxides
C01G45/02 - Oxides
C01G49/06 - Ferric oxide
C01G51/04 - Oxides

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2002/82 - by IR- or Raman-data
C01P2002/88 - by thermal analysis data, e.g. TGA, DTA, DSC
C01P2004/04 - obtained by TEM, STEM, STM or AFM
C01P2004/51 - Particles with a specific particle size distribution
C01P2004/52 - highly monodisperse size distribution
C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer
C01P2006/80 - Compositional purity

C - CHEMISTRY C09 - DYES C09C - TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

C09C1/24 - Oxides of iron

C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH

C30B29/16 - Oxides
C30B29/605 - {Products containing multiple oriented crystallites, e.g. columnar crystallites}
C30B7/00 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions

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DOE Contract Number:  

AC03-76SF00098

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

process; surfactant; capped; nanocrystals; disclosed; transition; metal; oxides; reacting; cupferron; complex; formula; cup; coordinating; reaction; conducted; temperature; ranging; 250; 300; period; time; sufficient; complete; metal oxide; transition metal; /117/