| 摘要 |
<p>Disclosed is a technique which can unbind the bundle structure of a carbon nanotube to solubilize the carbon nanotube completely, and is therefore helpful for the effective utilization of a carbon nanotube. The technique is characterized by using an aromatic polyimide having a repeat unit represented by the general formula [I]: [I] wherein AR represents a phenyl group or a fused polycyclic aromatic group; X may be present or absent and, when present, X represents an oxygen or sulfur atom; and Z represents a polar or non-polar substituent for increasing a solvent solubility. The polyimide is dissolved in a polar or non-polar solvent, a carbon nanotube is added to the polyimide solution in the solvent, and then the solution of the polyimide and the carbon nanotube in the solvent is irradiated with an ultrasonic wave, whereby the carbon nanotube can be solubilized.</p> |
