Copper nanocrystals and methods of producing same
First Claim
1. A method of making monodisperse nanocrystals comprising the steps of:
- (a) reducing a copper salt with a reducing agent to obtain reduced copper;
(b) providing a passivating agent to contact said reduced copper, wherein said passivating agent comprises at least one moiety selected from the group consisting of a nitrogen donor and an oxygen donor;
(c) isolating said nanocrystals comprising said reduced copper, wherein the passivating agent comprises 1-decyl-2-methylimidazole.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to methods of making monodisperse nanocrystals comprising the steps of reducing a copper salt with a reducing agent, providing a passivating agent comprising a nitrogen and/or an oxygen donating moitey and isolating the copper nanocrystals. Moreover, the invention relates to methods for making a copper film comprising the steps of applying a solvent comprising copper nanocrystals onto a substrate and heating the substrate to form a film of continuous bulk copper from said nanocrystals. Finally, the invention also relates to methods for filling a feature on a substrate with copper comprising the steps of applying a solvent comprising copper nanocrystals onto the featured substrate and heating the substrate to fill the feature by forming continuous bulk copper in the feature.
97 Citations
13 Claims
-
1. A method of making monodisperse nanocrystals comprising the steps of:
-
(a) reducing a copper salt with a reducing agent to obtain reduced copper;
(b) providing a passivating agent to contact said reduced copper, wherein said passivating agent comprises at least one moiety selected from the group consisting of a nitrogen donor and an oxygen donor;
(c) isolating said nanocrystals comprising said reduced copper, wherein the passivating agent comprises 1-decyl-2-methylimidazole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of making monodisperse nanocrystals comprising the steps of:
-
(a) reducing a copper salt with a reducing agent to obtain reduced copper;
(b) providing a passivating agent to contact said reduced copper, wherein said passivating agent comprises at least one moiety selected from the group consisting of a nitrogen donor and an oxygen donor;
(c) isolating said nanocrystals comprising said reduced copper, wherein the passivating agent is tetra-n-octylammonium decanoate.
-
-
13. A method of making monodisperse nanocrystals comprising the steps of:
-
(a) reducing a copper salt with a reducing agent to obtain reduced copper;
(b) providing a passivating agent to contact said reduced copper, wherein said passivating agent comprises at least one moiety selected from the group consisting of a nitrogen donor and an oxygen donor;
(c) isolating said nanocrystals comprising said reduced copper wherein the isolation of said nanocrystals takes place in the presence of a surfactant, and wherein said surfactant is 1-heptyl-4-(4-pyridyl) pyridium bromide.
-
Specification