Figure 2. Micelle polymorphs with spherical patches.

Samples were prepared from acetone/isopropanol 60:40 (v/v) unless otherwise noted. (a) Spheres-on-spheres of S₁₁₀₅B₂₃₇T₆₅₄. Schematic of block arrangement shows PS core (grey), PB patches (black) and PT corona (green); this domain sequence applies to all nanostructures and the PT corona always emanates from the dark PB domains. Scale bars, 200 and 50 nm in the inset. (b) Spheres-on-cylinders of S₅₄₀B₁₇₃T₁₃₇; close-up shows the small PB patches. Scale bars, 1 μm and 100 nm in the inset. (c) Spheres-on-sheets of S₅₄₀B₁₇₃T₁₃₇ in acetone/isopropanol (85:15 v/v), close-up recorded at 54° tilt angle and tomographic reconstruction showing PB patches in green. Scale bars, 500 and 200 nm in the inset. (d) Spheres-on-vesicles of S₅₄₀B₁₇₃T₈₈; close-up recorded at 50° tilt angle and tomographic reconstruction showing PB patches in green. Scale bars, 200 and 50 nm in the inset.