| 초록 |
While block copolymers (BCPs) form micelles in a solution, they also can form surface micelles at the air-water interface in a similar manner but with different chain conformation. Unlike BCP micelles in solution, the structure of surface micelles can be effectively controlled by changing surface pressure which regulates the length of coronas. In this study, we report that BCP surface micelles which were transferred from the air-water interface to a substrate can transform into diverse nanostructures with direct immersion in specific solvents. Initial hexagonal array of surface micelles transformed into unique nanostructures such as toroids, split dots, and inverse micelles, which is attributed to complex interactions between polymer chains, substrate, and solvents. We investigate the following phenomena by varying the molecular weight of BCPs, surface pressure, solvent immersion time, and further discuss how these parameters alter the rearrangement kinetics of the surface micelles. |
