| 초록 |
The micelles generated via self-assembly of block copolymer in selective solvent are of substantial interests due to their potential applications such as drug delivery vehicles and nanotemplates. In contrast to the conventional coalescence pathway to yield simple micelle structures such as spheres, cylinders or vesicles, recent computer simulation suggests a new route to formation of more complex-shaped micelles.[1] In the present study we report the observation of unusually shaped micelles from polyisoprene-block-poly(2-vinylpyridine) diblock copolymers in selective solvents. A variety of intriguing morphologies, such as uniform ring shaped micelles, vesicles with embedded sphere micelles and cage like structures, are formed depending on the sample preparation conditions. The nature of these structures was elucidated by atomic force microscopy (AFM), transmission electron microscopy (TEM), and light-scattering experiments. |
