METALLIC AND SEMICONDUCTOR NANOTUBES, NANOCOMPOSITE OF SAME, PURIFICATION OF SAME, AND USE OF SAME

摘要

A braided nanocomposite comprises a plurality of superhelix nanocomposites reversibly combined in a braided helical configuration, each of the superhelix nanocomposites comprises: an (n,m)-single wall carbon nanotube ((n,m)-SWNT); a plurality of flavin moieties disposed in a helix which is self-assembled around the (n,m)-SWNT; and a writhe formed by coiling of the (n,m)-SWNT, wherein the plurality of superhelix nanocomposites reversibly combines to form the braided nanocomposite. A method for removing a surface defect from nanocomposites comprises: disposing a nanocomposite in a first medium, the nanocomposite comprising: an (n,m)-SWNT; and a plurality of flavin moieties disposed on the (n,m)-SWNT, a portion of the plurality of flavin moieties being arranged in a helix on the (n,m)-SWNT; contacting the nanocomposite with a second medium; and annealing the surface defect among the plurality of flavin moieties disposed on the (n,m)-SWNT to remove the surface defect from the nanocomposite to form an annealed nanocomposite.

主权项

1. A method for enriching an initial concentration of (8,6)-SWNTs, (7,7)-SWNTs, or a combination thereof, from a plurality of (n,m)-SWNTs, the method comprising:
dispersing the plurality of (n,m)-SWNTs in a first medium comprising flavin moieties under conditions effective for the flavins to self-assemble in a wrapped pattern around the (n,m)-SWNTs, to form a nanocomposite; contacting the nanocomposite with a second medium that is immiscible with the first medium under conditions effective to enrich, in the first medium, the concentration of an (8,6)-SWNT nanocomposite, (7,7)-SWNT nanocomposite, or a combination thereof relative to the initial concentration in the plurality of (n,m)-SWNTs; and separating the first medium from the second medium.