Nanostructured heteroarm star block terpolymers via an extension of the "in-out" polymerization route.

In this communication an extended "in-out" polymerization method is presented, which leads to the synthesis of novel heteroarm star block terpolymers of the type A(n)(B-b-C)(n). A four step/one-pot synthetic procedure is pursued using anionic polymerization under an inert atmosphere. The resulted star-shaped terpolymer consists of a divinyl benzene nodule bearing pure polystyrene and poly(hexyl methacrylate)-block-poly(methyl methacrylate) diblock copolymer arms.