| 초록 |
Carbon nanotubes (CNTs) in their native state tend to aggregate each other to form bundles. This characteristic feature accounts for poor dispersibility in liquids and for difficult processing. To overcome these problems, functional groups are introduced on the surface of CNTs. Among various chemical interactions, covalent bonding is most widely used for the purpose. However, it disturbs the conjugated structure of CNTs to deteriorate the electronic properties. In this work, we used coulombic interaction which is as strong as covalent bonding. Its unique characteristics of non-directional and reversible natures make it different from using covalent bonding. We tried to provide the basic conception about using coulombic interaction of CNTs and organic polymers. Anionic groups were introduced onto CNTs using π-π interaction of pyrenes. The anionically charged CNTs were reacted with cationic organic polymers. The effect of concentration, pH, ionic strength, and salt will be discussed. |
