Patent ID: 8349903

Claim:
A carbon nanotube composition comprising: carbon nanotubes; a dispersion medium selected from the group consisting of an organic solvent, water, and a mixture thereof; and a dispersant for the carbon nanotubes, comprising a head covalently bonded to a tail; the head having an aromatic ring; and wherein the tails are regioregularly arranged, wherein the head is selected from the group represented by the following Formula (1), and the tail is selected from the group represented by the following Formula (2): wherein X is S, NH, or O, and l is and integer of 2 to about 60; wherein Y is selected from the group consisting of a substituted or unsubstituted alkenylene group of 1 to about 10 carbon atoms, a substituted or unsubstituted alkynylene group of 1 to about 10 carbon atoms, and a substituted or unsubstituted arylalkylene group of about 6 to about 20 carbon atoms, Z is selected from the group consisting of —H, —CH 3 , —OH, carboxyl acid or salts thereof, sulfonic acid or salts thereof, and phosphoric acid or salts thereof, a is 0 or 1, m is an integer of 1 to about 9, and n is an integer of up to about 9, wherein the ratio of the heads to the tails is 2:1 or 3:1.