# US 2014/0151600 A1 · Functionalized Matrices for Dispersion of Nanostructures

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- Number: US 2014/0151600 A1
- Document ID: US20140151600A1
- Status: Published application
- Kind: A1
- Application number: 14/082,853
- Filed: 2013-11-18
- Published: 2014-06-05
- Earliest claimed: 2009-05-01
- Assignees: Nanosys, Inc.
- Applicants: Nanosys, Inc.
- Inventors: Mingjun Liu; Robert S. Dubrow; William P. Freeman; Adrienne D. Kucma; J. Wallace Parce
- Web page: https://patentgrep.com/patent/US20140151600A1

## CPC

- C01B 25/087: {of gallium or indium}
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C07D 303/06: in which the oxirane rings are condensed with a carbocyclic ring system having three or more relevant rings
- C07D 303/24: with polyhydroxy compounds
- C07D 407/12: linked by a chain containing hetero atoms as chain links
- C07D 407/14: containing three or more hetero rings
- C08L 83/04: Polysiloxanes
- C08L 83/08: containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C09K 11/02: Use of particular materials as binders, particle coatings or suspension media therefor
- C09K 11/025: {non-luminescent particle coatings or suspension media}
- C09K 11/565: {with zinc cadmium}
- C09K 11/70: containing phosphorus
- C09K 11/883: {with zinc or cadmium}
- H10F 77/121: comprising only selenium or only tellurium
- H10F 77/123: comprising only Group II-VI materials, e.g. CdS, ZnS or HgCdTe
- H10F 77/1433: {Quantum dots}
- H10F 77/1437: {Quantum wires or nanorods}
- H10F 77/45: Wavelength conversion means, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
- H10F 77/496: {Luminescent members, e.g. fluorescent sheets (wavelength conversion means for photovoltaic cells H10F77/45)}
- B82Y 40/00: Manufacture or treatment of nanostructures
- C08G 77/14: containing silicon bound to oxygen-containing groups
- C08G 77/26: nitrogen-containing groups
- H10H 20/853: characterised by their shape
- H10H 20/854: characterised by their material, e.g. epoxy or silicone resins
- Y02E 10/52: PV systems with concentrators
- Y10S 977/773: Nanoparticle, i.e. structure having three dimensions of 100 nm or less
- Y10S 977/774: Exhibiting three-dimensional carrier confinement, e.g. quantum dots
- Y10S 977/896: Chemical synthesis, e.g. chemical bonding or breaking
- Y10S 977/90: having step or means utilizing mechanical or thermal property, e.g. pressure, heat
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can be used as refractive index matching components, filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.

## Claims

### Claim 1

A method of making a composite material, the method comprising:
providing a population of nanostructures, wherein the nanostructures have a polymeric ligand bound to a surface of the nanostructures, which ligand comprises a silicone backbone and one or more alcohol moieties coupled to the silicone backbone; and
incorporating the polymeric ligand into a silicone matrix in which the nanostructures are embedded.

### Claim 2 (depends on 1)

The method of claim 1, comprising providing an excess of the polymeric ligand, which excess polymeric ligand is not bound to the surface of the nanostructures; wherein incorporating the polymeric ligand into the silicone matrix comprises incorporating the excess polymeric ligand and the polymeric ligand bound to the nanostructures into the silicone matrix.

### Claim 3 (depends on 2)

The method of claim 2, wherein the matrix consists essentially of the polymeric ligand.

### Claim 4 (depends on 2)

The method of claim 2, wherein incorporating the polymeric ligand into the silicone matrix comprises:
mixing the population of nanostructures and the excess polymeric ligand with at least one solvent; and
evaporating the solvent, whereby the polymeric ligand bound to the nanostructures and the excess polymeric ligand not bound to the nanostructures form the silicone matrix.

### Claim 5 (depends on 2)

The method of claim 2, wherein incorporating the polymeric ligand into the silicone matrix comprises providing a crosslinker and reacting the crosslinker with hydroxyl moieties on the ligand.

### Claim 6 (depends on 2)

The method of claim 2, wherein the polymeric ligand comprises at least two different types of monomer units, at least one of which comprises the alcohol moiety and at least one of which lacks the alcohol moiety but comprises a polymerizable group or an epoxide group; wherein incorporating the polymeric ligand into the silicone matrix comprises reacting the polymerizable or epoxide groups on different molecules of the polymeric ligand with each other.

### Claim 7 (depends on 1)

The method of claim 1, wherein the polymeric ligand comprises one or more dicarbinol moieties coupled to the silicone backbone.

### Claim 8 (depends on 1)

A composite material produced by the method of claim 1.

### Claim 9 (depends on 8)

A device comprising the composite material of claim 8.