Patent ID: 8092719

Claim:
A nanocrystal-metal oxide composite comprising a nanocrystal and a metal oxide bound to the nanocrystal wherein the metal oxide comprises a compound represented by Formula 1: A R 1 k O-B (1) wherein A is N, NH, S, COO − , PO 3 H − or PO 3 2− , R 1 is an alkyl group containing at least one carbon atom, an alkenyl group containing at least two carbon atoms, or a cyclic group containing at least three carbon atoms, B is one or more repeating units selected from the group consisting of MO y R 2 m , and MO z R 3 R 4 n ; wherein each M is Ti, Zn, Si, Sn, W, Ta, Zr, Hf, Al, Y, Fe, Ce or Cr, R 2 , R 3 and R 4 are each independently an alkyl group containing at least one carbon atom, an alkenyl group containing at least two carbon atoms, or a heterocyclic group containing at least three carbon atoms and at least one heteroatom selected from the group consisting of N, S, O and P, k is an integer from 1 to 20, l, m, and n are each independently an integer including 0 and at least one of l, m, or n is greater than 0, and x, y, and z are each independently an integer from 1 to 3.