| 초록 |
Amphiphilic block copolymers can self-assemble into various nanostructures through the non-covalent interactions in a selective solvent. The resultant nanostructure can be determined by the molecular weights, relative block ratios, and compositions. The solution-state molecular assembly is following to the dynamic and complex process to reach the kinetic and thermodynamic equilibrium states. The direct observation of this dynamic process is huge research topic to get the deeper insights in the formation of mutual interactions between the molecules in natural and artificial materials. LP-TEM has recently emerged as a powerful tool to observe dynamic processes of molecules and particles in solution with spatial resolution. Here, I will introduce the origin and the formation of well-defined cylinders and toroids from the self-assembly of block copolymers by in-situ LP-TEM. The attractive interaction and binding energy between the molecules were compared with the theoretical value. |
