Patent ID: 9502152
Filing Date: 2016-11-22
CPC Classification: B82Y,C01B,C08G,C08K,C08L,C09C,H01B,H01L,Y02E,Y10S

Claim Text:
1. A method comprising: dispersing carbon nanotubes in a mixed solution containing a solvent, the carbon nanotubes, and a dispersant, selectively separating the semiconducting carbon nanotubes from the mixed solution, wherein the polythiophene derivative includes a structure represented by Formula 1 below: wherein R is the alkyl group and n is an integer greater than 1 and less, than or equal to 40,000, R is a C8 to C50 alkyl group, R1 and R2 are each independently one of hydrogen, halogen, methyl, and halomethyl, and the selectively separating the semiconducting carbon nanotubes from the mixed solution comprises separating a supernatant containing the dispersed semiconducting carbon nanotubes from the mixed solution by centrifugation.