Biomimetic honeycomb-structured surfaces formed from block copolymers incorporating acryloyl phosphorylcholine

We report the preparation of biomimetic honeycomb-structured porous films. These regular arrays were obtained by casting block copolymers composed of polystyrene and poly( acryloyl phosphorylcholine), so that they mimicked a cell membrane. The size of the pores and regularity of the hexagonal array is strongly dependent on the block length. The block copolymers were prepared via RAFT ( reversible addition fragmentation transfer) polymerization leading to well-defined products with a good control over block sizes.