# US 2014/0155640 A1 · Surface Functionalised Nanoparticles

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- Number: US 2014/0155640 A1
- Document ID: US20140155640A1
- Status: Published application
- Kind: A1
- Application number: 14/084,249
- Filed: 2013-11-19
- Published: 2014-06-05
- Earliest claimed: 2008-08-07
- Assignees: Nanoco Technologies Ltd.
- Applicants: Nanoco Technologies Ltd.
- Inventors: Nigel Pickett; Mark C. McCairn; Steven M. Daniels; Imrana Mushtaq; Paul Glarvey
- Web page: https://patentgrep.com/patent/US20140155640A1

## CPC

- C07F 19/00: Metal compounds according to more than one of main groups C07F1/00 - C07F17/00
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C07F 9/02: Phosphorus compounds (sugar phosphates C07H11/04; nucleotides C07H19/00, C07H21/00; nucleic acids C07H21/00)
- C09C 3/006: {Combinations of treatments provided for in groups C09C3/04 - C09C3/12}
- C09C 3/063: {Coating}
- C09C 3/08: Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)}
- C09C 3/10: Treatment with macromolecular organic compounds {(C09C3/006 takes precedence)}
- 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
- C01P 2002/82: by IR- or Raman-data
- C01P 2004/64: Nanometer sized, i.e. from 1-100 nanometer
- Y10T 428/2982: Particulate matter [e.g., sphere, flake, etc.]
- Y10T 428/2991: Coated
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention relates to a process for the production of surface functionalised nanoparticles, such as the production of semiconductor quantum dot nanoparticles incorporating surface-bound functional groups which increase the ease with which the dots can be employed in applications, such as incorporation into solvents, inks, polymers, glasses, metals, electronic materials and devices, bio-molecules and cells. The method comprises reacting first and second nanoparticle precursor species in the presence of a nanoparticle surface binding ligand X—Y—Z wherein X is a nanoparticle surface binding group, Y is a linker group, and Z is a functional group, in which Y comprises a polyethyleneglycol group and/or Z comprises an aliphatic group incorporating a terminal unsaturated group, said reaction being effected under conditions permitting binding of said surface binding ligand to the growing nanoparticles to produce said surface functionalised nanoparticles.

## Claims

### Claim at position 1

-37. (canceled)

### Claim 38

A method of producing surface-functionalized nanoparticles, the method comprising:
reacting nanoparticle precursor species to form nanoparticles in the presence of surface-functionalizing ligands, whereby the surface-functionalizing ligands bind to surfaces of the nanoparticles in-situ;
wherein the surface functionalizing ligands have the formula X—Y—Z, wherein X is a nanoparticle surface binding group, Y is a linker group, and Z is a functional group, wherein Y comprises a polymer and/or Z comprises an aliphatic group incorporating an unsaturated group.

### Claim 39 (depends on 38)

The method of claim 38, wherein nanoparticles are core nanoparticles.

### Claim 40 (depends on 38)

The method of claim 38, wherein the nanoparticles are core/shell nanoparticles.

### Claim 41 (depends on 38)

The method of claim 38, wherein the reacting and binding are in non-aqueous solvent.

### Claim 42 (depends on 38)

The method of claim 38, wherein the polymer comprises a polyethyleneglycol.

### Claim 43 (depends on 38)

The method of claim 38, wherein Y comprises an aromatic group.

### Claim 44 (depends on 38)

The method of claim 38, wherein X comprises a carboxylic acid group or a thiol group.

### Claim 45 (depends on 38)

The method of claim 38, wherein the unsaturated group is a terminally unsaturated group.

### Claim 45 (depends on 38)

The method of claim 38, wherein the unsaturated group is a vinyl group.

### Claim 46 (depends on 38)

The method of claim 38, wherein the surface functionalizing ligands comprise crosslinkable moieties.

### Claim 47

The method of 46, further comprising crosslinking the surface functionalizing ligands.

### Claim 48

A surface-functionalized nanoparticle prepared by:
reacting nanoparticle precursor species to form nanoparticles in the presence of surface-functionalizing ligands, whereby the surface-functionalizing ligands bind to surfaces of the nanoparticles in-situ;
wherein the surface functionalizing ligands have the formula X—Y—Z, wherein X is a nanoparticle surface binding group, Y is a linker group, and Z is a functional group, wherein Y comprises a polymer and/or Z comprises an aliphatic group incorporating an unsaturated group.

### Claim 49

A composition of matter comprising: nanoparticle precursor species and nanoparticles bound with surface-functionalizing ligands having the formula X—Y—Z, wherein X is a nanoparticle surface binding group, Y is a linker group, and Z is a functional group, wherein Y comprises a polymer and/or Z comprises an aliphatic group incorporating an unsaturated group.