Abstract
The syndiotactic polypropylene-block-atactic polystyrene (sPP-b-aPS), a novel crystalline-amorphous stereoregular diblock copolymer, is prepared in two steps. First, p-methylstyrene-capped syndiotactic polypropylene (pMS-capped sPP), which served as an end-functionalized prepolymer, can be successfully prepared by conducting propylene polymerization in the presence of p-methylstyrene and hydrogen using Me 2 C(Cp)(Flu)- ZrCl 2 as the catalyst. Second, the resulting end-functionalized prepolymer is linked to polystyrene (aPS) to provide the stereoregular crystalline-amorphous diblock copolymer, sPP-b-aPS, with a narrow range of molecular weight distribution (MWD). The resulting stereoregular crystalline-amorphous diblock copolymer, sPP-b-aPS, is able to self-organize into ordered nanopatterns in bulk as revealed by bright field transmission electron microscopy analyses. © 2006 American Chemical Society.