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Metal oxide-containing nanoparticles

  • US 7,901,656 B2
  • Filed: 03/19/2004
  • Issued: 03/08/2011
  • Est. Priority Date: 03/21/2003
  • Status: Active Grant
First Claim
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1. A metal oxide-containing composition, the composition comprising:

  • metal oxide nanoparticles having a surface, the metal oxide nanoparticles described on average by Formula I;


    M.xOy



    I; and

    one or more heteroatom donor ligands bonded to the surface of the nanoparticles, the donor ligands selected from the group consisting of pyrazole, imidazole, triazole, tetrazole, and combinations thereof,whereinM is a metal consisting of one or more of the following oxidation states;

    +1, +2, +3, +4, +5, +6, +7, and +8;

    O is oxygen; and

    x and y are numbers having a ratio that is equal to the ratio of an average number of M atoms to an average number of O atoms in the nanoparticles, wherein the average number of M atoms is from about 10 to about 5×

    1010 atoms and the average number of O atoms is at least about 0.01 times the number of M atoms.

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