| 초록 |
In a selective solvent that dissolves only one of the blocks, diblock copolymers self-associate into micelles with soluble coronas and insoluble cores. These micelles can solubilize otherwise insoluble substances in the cores so that they can be suitable for colloidal stabilization, drug delivery, and so on. In this study, fluororphores, which are insoluble in toluene, were solubilized in a toluene solution of polystyrene-poly(4-vinly pyridine), PS-PVP, diblock copolymer micelles by selective incorporation of fluorescent dyes into the PVP cores. A blended film of PS-PVP micelle-encapsulated dyes with PS homopolymer was solvent-cast from their mixed solutions. The dye molecules were encapsulated in the nanometer-sized core of micelles so that they were evenly distributed throughout the bulk film. Since aggregation of dye molecules in the film was effectively controlled, the blended film showed good photoluminescent properties. |
