| 초록 |
Various nanostructures realized through the self-assembly of block copolymers provide a wonderful platform to enable the formation of complex structures on the nanoscale. However, full utilization of block copolymer self-assembly requires control over the orientation of microdomains as well as the lateral order. To this purpose, various salts which have an ability to make complexation with one component in the block copolymer are added to cylinder-forming block copolymer in this work. Small amount of added salts, on the order a few ions per chain, is found to have large effects on the ordering and orientation of the copolymer films during solvent annealing, a process where we have shown a large degree of long-range lateral order can be obtained. This behavior strongly depends on salt concentration and the nature of the counter ion. In addition, efforts to produce well-organized patterns of nanoparticles in the copolymer film by using inorganic salts will be discussed. |
