Metallic single-walled carbon nanotube hybrid assemblies and superstructures
AssigneeDuke University
InventorsMichael THERIEN, Francesco MASTROCINQUE, George BULLARD, Animesh NAYAK, Yusong BAI
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Abstract
A metallic single-walled carbon nanotube (SWNT) hybrid assembly or superstructure includes a single walled carbon nanotube (SWNT) having a chiral index (n, m) where (n−m)/3 is an integer or 0; and an oligomer or polymer that single-chain wraps the metallic SWNT, wherein the oligomer or polymer is formed of repeat units, wherein each repeat unit has at least one charged functional group per 1-3 nm of oligomer or polymer length. The superstructure is suitable for optical, electro-optical, and spintronic-based device applications.
Claims22
A superstructure comprising:
- a metallic single walled carbon nanotube (SWNT) having a chiral index (n, m) where (n−m)/3 is an integer or 0;
- and
- a conjugated oligomer or polymer that single-chain wraps a surface of the metallic SWNT at fixed helical pitch length, wherein the conjugated oligomer or polymer is formed of repeat units, wherein each repeat unit has at least one charged functional group per 1-3 nm of oligomer or polymer length.
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A method of controlling band gap openings in metallic carbon nanotubes, the method comprising:
- selecting an oligomer or polymer, wherein the oligomer or polymer is formed of repeat units, wherein each repeat unit has at least one charged functional group per 1-3 nm of oligomer or polymer length;
- dispersing metallic single walled carbon nanotubes (SWNTs) in a suspension, the metallic SWNTs having a chiral index (n, m) where (n−m)/3 is an integer or 0;
- and
- mixing an aqueous solution of the oligomer or polymer with the metallic SWNTs in the suspension to form superstructures having a desired band gap opening, each superstructure comprising a metallic SWNT of the metallic SWNTs and a conjugated oligomer or polymer of the selected oligomer or polymer that single-chain wraps about a surface of the metallic SWNT at fixed helical pitch length.
Dependencies are inferred from the claim text.