Patent ID: 7229747

Claim:
A method of forming a negative pattern of carbon nanotubes, wherein the method comprises the steps of: (a) dispersing carbon nanotubes having surfaces that are modified with an oxirane group of formula (1) and/or with an anhydride group of formula (2), (3), (4), (5), (6) or (7) in an organic solvent comprising one or more photoacid or photobase generator to provide a liquid coating composition: wherein, R is C 1-15 , linear, branched or cyclic alkylene; (b) applying the liquid coating composition onto a substrate and evaporating the organic solvent by prebaking to deposit a coating film of said surface-modified carbon nanotubes on the substrate; (c) exposing the coating film of said surface-modified carbon nanotubes to UV light through a photomask having a desired pattern to induce photopolymerization of the surface-modified carbon nanotubes in exposed areas of the coating film; and (d) developing the exposed coating film of said surface-modified carbon nanotubes with an organic developer to remove unexposed areas of the coating film, resulting in a negative patterned film of said surface-modified carbon nanotubes.