Coated fullerenes, compositions and dielectrics made therefrom

Patent metadata

Field	Value
Publication number	US-9290665-B2
Application number	US-201113270985-A
Country	US
Kind code	B2
Filing date	Oct 11, 2011
Priority date	Nov 20, 2001
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

The present invention relates to coated fullerenes comprising a layer of at least one inorganic material covering at least a portion of at least one surface of a fullerene and methods for making. The present invention further relates to composites comprising the coated fullerenes of the present invention and further comprising polymers, ceramics, and/or inorganic oxides. A coated fullerene interconnect device where at least two fullerenes are contacting each other to form a spontaneous interconnect is also disclosed as well as methods of making. In addition, dielectric films comprising the coated fullerenes of the present invention and methods of making are further disclosed.

First claim

What is claimed is:

1. A coated fullerene comprising:
an individual fullerenol,
wherein the individual fullerenol is a hydroxylated fullerene, wherein the fullerene is selected from the group consisting of C 60 , C 72 , C 84 , C 96 , C 108 , and C 120 ; and

a uniform layer of at least one inorganic oxide material covering at least one hemisphere of the individual fullerenol,
wherein the uniform layer is at least uniform in thickness, and
wherein the inorganic oxide material comprises silica.

2. The coated fullerene according to claim 1 , wherein the fullerene is C 60 .

3. The coated fullerene according to claim 1 , wherein the fullerene is doped with at least one type of metal.

4. The coated fullerene according to claim 1 , wherein the fullerene is handled in the solid state without undergoing any substantial change in electrical or mechanical properties.

5. The coated fullerene according to claim 1 , wherein the coated fullerenes show bands in the Raman spectrum characteristic of individual fullerenes.

6. The coated fullerene according to claim 5 , wherein the coated fullerenes show no change in fluorescence until the thickness of the coating is sufficient to cause light scattering.

7. The coated fullerene according to claim 1 , wherein the coated fullerene is used in the interlayer dielectric (ILD) or intermetal dielectric (IMD) of a silicon transistor chip.

8. The coated fullerene according to claim 1 , wherein the uniform layer of the at least one inorganic oxide material completely covers the fullerene.

9. A composite comprising a coated fullerene comprising:
an individual fullerenol,
wherein the individual fullerenol is a hydroxylated fullerene, wherein the fullerene is selected from the group consisting of C 60 , C 72 , C 84 , C 96 , C 108 , and C 120 ;

a uniform layer of at least one inorganic oxide material covering at least one hemisphere of the individual fullerenol,
wherein the uniform layer is at least uniform in thickness, and
wherein the inorganic oxide material comprises silica; and

at least one composite matrix selected from the group consisting of polymers, ceramics, inorganic oxides, and combinations thereof.

10. The composite according to claim 9 , wherein the fullerene is C 60 .

11. The composite of claim 9 , wherein the composite is used in a thin film.

12. The coated fullerene according to claim 9 , wherein the uniform layer of the at least one inorganic oxide material completely covers the fullerene.

Assignees

• Barron Andrew R
• Flood Dennis J
• Whitsitt Elizabeth
• Univ Rice William M
• Natcore Technology Inc

Inventors

• Barron Andrew R
• Flood Dennis J
• Whitsitt Elizabeth

Classifications

• C01B2202/28

  Solid content in solvents · CPC title

• C09C1/3045 Primary

  Treatment with inorganic compounds · CPC title

• C01B2202/02

  Single-walled nanotubes · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C01P2004/84

  one phase coated with the other · CPC title