Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2008-05-20
2008-05-20
Drodge, Joseph W (Department: 1797)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C209S001000, C423S461000, C977S751000, C977S845000, C436S178000
Reexamination Certificate
active
07374685
ABSTRACT:
A method for separating semiconducting single-walled carbon nanotubes from metallic single-walled carbon nanotubes is disclosed. The method utilizes separation agents that preferentially associate with semiconducting nanotubes due to the electrical nature of the nanotubes. The separation agents are those that have a planar orientation, π-electrons available for association with the surface of the nanotubes, and also include a soluble portion of the molecule. Following preferential association of the separation agent with the semiconducting nanotubes, the agent
anotubes complex is soluble and can be solubilized with the solution enriched in semiconducting nanotubes while the residual solid is enriched in metallic nanotubes.
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Search Report and Written Opinion for PCT/US04/42412, Dec. 13, 2005.
Clemson University
Dority & Manning P.A.
Drodge Joseph W
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