US Patent 7247670 - Nanotube dispersion using polybenzyl ethyl dendrimer

http://www.freepatentsonline.com/7247670.html

This patent from General Electric alleges an improved method for single walled carbon nanotube dispersion that can separate the semiconducting nanotubes from the metallic nanotubes using non-covalently bonded chemical moiety bonded to a polybenzyl ester dendrimer. Claim 1 reads:

1. A nanostructure comprising: at least one nanotube; at least one chemical moiety non-covalently attached to the at least one nanotube, wherein the at least one chemical moiety is one of a soluble polymer, a soluble oligomer, and combinations thereof; wherein the at least one chemical moiety enhances dispersion of the at least one nanotube; and at least one dendrimer bonded to the at least one chemical moiety, wherein the at least one dendrimer comprises a polybenzyl ether dendrimer.