Highly soluble carbon nanotubes with enhanced conductivity
First Claim
1. A method of preparing a carbon nanotube dispersion, said method comprising:
- providing a mixture of carbon nanotubes, a compound comprising at least one polyaromatic moiety, and an sulfonating acid;
noncovalently bonding said carbon nanotubes with said compound comprising at least one polyaromatic moiety; and
sulfonating said compound with said acid.
3 Assignments
0 Petitions
Accused Products
Abstract
New methods for preparing carbon nanotube films having enhanced properties are provided. The method broadly provides reacting carbon nanotubes (CNTs) and compounds comprising a polyaromatic moieties in the presence a strong acid. During the reaction process, the polyaromatic moieties noncovalently bond with the carbon nanotubes. Additionally, the functionalizing moieties are further functionalized by the strong acid. This dual functionalization allows the CNTs to be dispersed at concentrations greater than 0.5 g/L in solution without damaging their desirable electronic and physical properties. The resulting solutions are stable on the shelf for months without observable bundling, and can be incorporated into solutions for printing conductive traces by a variety of means, including inkjet, screen, flexographic, gravure printing, or spin and spray coating.
-
Citations
18 Claims
-
1. A method of preparing a carbon nanotube dispersion, said method comprising:
-
providing a mixture of carbon nanotubes, a compound comprising at least one polyaromatic moiety, and an sulfonating acid; noncovalently bonding said carbon nanotubes with said compound comprising at least one polyaromatic moiety; and sulfonating said compound with said acid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of preparing a carbon nanotube dispersion, said method comprising:
-
providing a mixture of carbon nanotubes, a compound comprising at least one polyaromatic moiety, and an acid selected from the group consisting of fuming sulfuric acid, chlorosulfonic acid, triflic acid, p-toluenesulfonic acid, and mixtures thereof; noncovalently bonding said carbon nanotubes with said compound comprising at least one polyaromatic moiety; and reacting said acid with said at least one polyaromatic moiety.
-
-
18. A method of preparing a carbon nanotube dispersion, said method comprising:
-
providing a mixture of carbon nanotubes, a compound comprising at least one polyaromatic moiety, and an acid, wherein said mixture is free of surfactants; noncovalently bonding said carbon nanotubes with said compound comprising at least one polyaromatic moiety; and reacting said acid with said at least one polyaromatic moiety.
-
Specification