Microphase Separation of a PS-b-PFS Block Copolymer via Solvent Annealing: Effect of Solvent, Substrate, and Exposure Time on Morphology

Scheme 2

Schematic of the effect the polymer/substrate interaction can have on film morphology: (a) both blocks have an affinity for the surface, (b) one block preferentially wets the surface, and (c) both blocks are repulsed by the surface.