Preparation of Nanoparticle Materials

Patent metadata

Field	Value
Publication number	US-2017022627-A1
Application number	US-201615217387-A
Country	US
Kind code	A1
Filing date	Jul 22, 2016
Priority date	Apr 30, 2004
Publication date	Jan 26, 2017
Grant date	—

Abstract

A method of producing nanoparticles comprises effecting conversion of a molecular cluster compound to the material of the nanoparticles. The molecular cluster compound comprises a first ion and a second ion to be incorporated into the growing nanoparticles. The conversion can be effected in the presence of a second molecular cluster compound comprising a third ion and a fourth ion to be incorporated into the growing nanoparticles, under conditions permitting seeding and growth of the nanoparticles via consumption of a first molecular cluster compound.

First claim

What is claimed is:

1 . A method of producing nanoparticles comprising:
effecting conversion of a molecular cluster compound to a material of the nanoparticles, said molecular cluster compound comprising a first ion and a second ion to be incorporated into the nanoparticles, wherein said conversion is effected under conditions permitting seeding and growth of the nanoparticles via consumption of other molecular cluster compounds.

2 . The method of claim 1 , wherein the first ion is a Group 13 element and the second ion is a Group 15 element.

3 . The method claim 2 , wherein the Group 13 element is indium (In) and the Group 15 element is phosphorus (P).

4 . The method of claim 1 , wherein the molecular cluster compound is selected from the group consisting of [RInPR′] 4 , [RInPR′] 6 , and [RInNR′] 4 , wherein
R is Cl, Br, I, CH 3 , C 3 H 7 , C 6 H 2 (CH 3 ) 3 , C 2 H 5 , and
R′ is Si(C 6 H 5 ) 3 , Si(C 3 H 7 ) 3 , Si(CH 3 ) 2 (C 6 H 13 ), C 6 H 2 (CH 3 ) 3 , C 4 H 9 , C 6 F 5 , C 6 H 4 F.

5 . The method of claim 1 , wherein the molecular cluster compound has a formula of [X] 4 [M 10 Se 4 (SPh) 16 ], wherein
X is Li 30 , (CH 3 ) 3 NH + , Et 3 NH + , and M is Zn, Cd.

6 . The method of claim 1 , wherein the molecular cluster compound is Zn 10 (SEt) 10 Et 10 .

7 . The method of claim 1 , wherein conversion of the molecular cluster compound is effected under solvothermal conditions.

8 . A method of producing nanoparticles comprising:
effecting conversion of a molecular cluster compound to a material of the nanoparticles, said molecular cluster compound comprising a first ion and a second ion to be incorporated into the nanoparticles, wherein said conversion is effected under conditions permitting seeding and growth of the nanoparticles via consumption of other molecular cluster compounds, and wherein the molecular cluster compound is dissolved in a solvent at a first temperature to form a solution and the temperature of the solution is then increased to a second temperature which is sufficient to initiate seeding and growth of the nanoparticles.

9 . The method of claim 8 , wherein the first ion is a Group 13 element and the second ion is a Group 15 element.

10 . The method claim 9 , wherein the Group 13 element is indium (In) and the Group 15 element is phosphorus (P).

11 . The method of claim 8 , wherein the molecular cluster compound is selected from the group consisting of [RInPR′] 4 , [RInPR′] 6 , and [RInNR′] 4 , wherein
R is Cl, Br, I, CH 3 , C 3 H 7 , C 6 H 2 (CH 3 ) 3 , C 2 H 5 , and
R′ is Si(C 6 H 5 ) 3 , Si(C 3 H 7 ) 3 , Si(CH 3 ) 2 (C 6 H 13 ), C 6 H 2 (CH 3 ) 3 , C 4 H 9 , C 6 F 5 , C 6 H 4 F.

12 . The method of claim 9 , wherein the molecular cluster compound has the formula [X] 4 [M 10 Se 4 (SPh) 16 ], wherein
X is Li 30 , (CH 3 ) 3 NH + , Et 3 NH + , and M is Zn, Cd.

13 . The method of claim 8 , wherein the molecular cluster compound is Zn 10 (SEt) 10 Et 10 .

14 . A method of producing nanoparticles, the method comprising:
effecting conversion of a first molecular cluster compound to a material of the nanoparticles, said first molecular cluster compound comprising a first ion and a second ion to be incorporated into the nanoparticles, said conversion being effected in the presence of a second molecular cluster compound comprising a third ion and a fourth ion to be incorporated into the nanoparticles, under conditions permitting seeding and growth of the nanoparticles via consumption of the first molecular cluster compound, wherein the second molecular cluster compound acts as a template for growth of the nanoparticles.

15 . The method of claim 14 , wherein the first ion and the third ion are from the same Group from the Periodic Table of the Elements.

16 . The method of claim 15 , wherein the first ion and the third ion are the same element from the Periodic Table of the Elements.

17 . The method of claim 14 , wherein the first molecular cluster compound and the second molecular cluster compound have the same chemical composition.

18 . The method of claim 14 , wherein the second molecular cluster compound is selected from the group consisting of [RInPR′] 4 , [RInPR′] 6 , and [RInNR′] 4 wherein
R is Cl, Br, I, CH 3 , C 3 H 7 , C 6 H 2 (CH 3 ) 3 , C 2 H 5 , and
R′ is Si(C 6 H 5 ) 3 , Si(C 3 H 7 ) 3 , Si(CH 3 ) 2 (C 6 H 13 ), C 6 H 2 (CH 3 ) 3 , C 4 H 9 , C 6 F 5 , C 6 H 4 F.

19 . The method of claim 14 , wherein the second molecular cluster compound has the formula
[X] 4 [M 10 Se 4 (SPh) 16 ], wherein X is Li 30 , (CH 3 ) 3 NH + , Et 3 NH + , and M is Zn, Cd.

20 . The method of claim 14 , wherein the second molecular cluster compound is Zn 10 (SEt) 10 Et 10 .

Assignees

• Nanoco Technologies Ltd

Inventors

• O'Brien Paul
• Pickett Nigel

Classifications

• C30B29/48

  AIIBVI compounds {wherein A is Zn, Cd or Hg, and B is S, Se or Te} · CPC title

• C30B7/005

  Epitaxial layer growth · CPC title

• C30B7/10 Primary

  by application of pressure, e.g. hydrothermal processes · CPC title

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title

• C01B19/007

  Tellurides or selenides of metals (C01B19/002 takes precedence) · CPC title