Materials and methods for the preparation of nanocomposites

Patent metadata

Field	Value
Publication number	US-10121952-B2
Application number	US-201615133494-A
Country	US
Kind code	B2
Filing date	Apr 20, 2016
Priority date	Apr 23, 2009
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

Disclosed herein is an isolable colloidal particle comprising a nanoparticle and an inorganic capping agent bound to the surface of the nanoparticle, a solution of the same, a method for making the same from a biphasic solvent mixture, and the formation of structures and solids from the isolable colloidal particle. The process can yield photovoltaic cells, piezoelectric crystals, thermoelectric layers, optoelectronic layers, light emitting diodes, ferroelectric layers, thin film transistors, floating gate memory devices, imaging devices, phase change layers, and sensor devices.

First claim

What is claimed is:

1. A solution comprising a colloidal particle and a solvent, wherein the colloidal particle comprises an inorganic capping agent bound to a surface of a nanoparticle; wherein the inorganic capping agent comprises a Zintl ion and is substantially free of an organic capping agent, and the solution is substantially free of an organic capping agent.

2. The solution of claim 1 , wherein the solvent is selected from a group consisting of water, dimethylsulfoxide, formamide, methylformamide, ethanolamine, dimethylformamide, benzonitrile, 1,3-butanediol, butanol, dimethylacetamide, dioxane, methoxyethanol, methylpyrrolidinone, pyridine, ethyleneglycol, glycerol, methanol, ethanol, trimethylamine, dimethylamine, methylamine, ammonia, triethylamine, tetramethylethylenediamine, trimethylethylenediamine, dimethylethylenediamine, ethylenediamine, acetonitrile, and a mixture thereof.

3. The solution of claim 1 , wherein the solvent is substantially free of hydrazine.

4. The solution of claim 1 , wherein the inorganic capping agent is selected from a group consisting of a polyatomic anion, a soluble metal chalcogenide, a soluble polyatomic metal chalcogenide anion, and a mixture thereof.

5. The solution of claim 1 , wherein the inorganic capping agent further comprises an ion selected from the group consisting of As 3 3− , As 4 2− , As 5 3− , As 7 3− , As 11 3− , AsS 3 3− , As 2 Se 6 3− , As 2 Te 6 3− , As 10 Te 3 2− , Au 2 Te 4 2− , Au 3 Te 4 3− , Bi 3 3− , Bi 4 2− , Bi 5 3− , Bi 7 3− , GaTe 2− , Ge 9 2− , Ge 9 4− , Ge 2 S 6 4− , HgSe 2 2− , Hg 3 Se 4 2− , In 2 Se 4 2− , In 2 Te 4 2− , Ni 5 Sb 17 4− , Pb 5 2− , Pb 7 4− , Pb 9 4− , Pb 2 Sb 2 2− , Sb 3 3− , Sb 4 2− , Sb 7 3− , SbSe 4 3− , SbSe 4 5− , SbTe 4 5− , Sb 2 Se 3 , Sb 2 Te 5 4− , Sb 2 Te 7 4− , Sb 4 Te 4 4− , Sb 9 Te 6 3− , Se 2 2− , Se 3 2− , Se 4 2− , Se 5,6 2− , Se 6 2− , Sn 4 2− , Sn 5 2− , Sn 9 3− , Sn 9 4− , SnS 4 4− , SnSe 4 4− , SnTe 4 4− , SnS 4 Mn 2 5− , Sn 2 S 6 4− , Sn 2 Se 6 4− , Sn 2 Te 6 4− , Sn 2 Bi 2 2− , Sn 8 Sb 3− , Te 2 2− , Te 3 2− , Te 4 2− , Tl 2 Te 2 2− , TlSn 8 3− , TlSn 8 5− , TlSn 9 3− , TlTe 2 2− , and a mixture thereof.

6. The solution of claim 1 , wherein the inorganic capping agent further comprises a metal selected from the group consisting of a transition metal, a lanthanide, an actinide, a main group metal, a metalloid, and a mixture thereof.

7. The solution of claim 1 , wherein the inorganic capping agent further comprises a soluble metal chalcogenide selected from the group consisting of molecular compounds derived from CuInSe 2 , CuIn x Ga 1-x Se 2 , Ga 2 Se 3 , In 2 Se 3 , In 2 Te 3 , Sb 2 S3, Sb 2 Se 3 , Sb 2 Te 3 , ZnTe, and a mixture thereof.

8. The solution of claim 1 , wherein the nanoparticle is selected from the group consisting of a nanocrystal, a nanorod, a nanowire, and a mixture thereof.

9. The solution of claim 1 , wherein the nanoparticle is selected from a group consisting of AlN, AlP, AlAs, Ag, Au, Bi, Bi 2 S 3 , Bi 2 Se 3 , Bi 2 Te 3 , CdS, CdSe, CdTe, Co, CoPt, CoPt 3 , Cu, Cu 2 S, Cu 2 Se, CuInSe 2 , CuIn (1-x) Ga x (S,Se) 2 , Cu 2 ZnSn(S,Se) 4 , Fe, FeO, Fe 2 O 3 , Fe 3 O 4 , FePt, GaN, GaP, GaAs, GaSb, GaSe, Ge, HgS, HgSe, HgTe, InN, InP, InSb, InAs, Ni, PbS, PbSe, PbTe, Pd, Pt, Ru, Rh, Si, Sn, ZnS, ZnSe, ZnTe, Au/PbS, Au/PbSe, Au/PbTe, Ag/PbS, Ag/PbSe, Ag/PbTe, Pt/PbS, Pt/PbSe, Pt/PbTe, Au/CdS, Au/CdSe, Au/CdTe, Ag/CdS, Ag/CdSe, Ag/CdTe, Pt/CdS, Pt/CdSe, Pt/CdTe, Au/FeO, Au/Fe 2 O 3 , Au/Fe 3 O 4 , Pt/FeO, Pt/Fe 2 O 3 , Pt/Fe 3 O 4 , FePt/PbS, FePt/PbSe, FePt/PbTe, FePt/CdS, FePt/CdSe, FePt/CdTe, CdSe/CdS, CdSe/ZnS, InP/CdSe, InP/ZnS, InP/ZnSe, InAs/CdSe, InAs/ZnSe, and a mixture thereof.

10. A method of making a colloidal particle comprising
admixing a solution of an inorganic capping agent in a first solvent and a solution of a nanoparticle in a second solvent, wherein the second solvent is appreciably immiscible in the first solvent,
wherein the colloidal particle comprises the inorganic capping agent bound to a surface of the nanoparticle; and the inorganic capping agent comprises a Zintl ion and is substantially free of an organic capping agent.

11. The method of claim 10 , wherein the first solvent and the second solvent are substantially free of hydrazine.

12. The method of claim 10 further comprising isolating the colloidal particle from the second solvent.

Assignees

• Univ Chicago

Inventors

• Talapin Dmitri V
• Kovalenko Maksym V
• Lee Jong-Soo
• Jiang Chengyang

Classifications

• C01B19/007

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

• H01B1/06

  mainly consisting of other non-metallic substances · CPC title

• C09K11/883

  with zinc or cadmium · CPC title

• C01P2004/03

  obtained by SEM · CPC title

• C30B29/46

  Sulfur-, selenium- or tellurium-containing compounds · CPC title