Fig. 2.

Thermodynamic modeling and interfacial measurements of oxidation based cylinder-to-sphere transitions. a Equilibrium core radii corresponding to the free energy minima for spherical micelles (SPH) and cylindrical filomicelles (CYL) and b total free energy of SPH and CYL calculated at the equilibrium core radii. Star represents the interfacial tension at which cylinder-to-sphere transition occurs (γ≈8). Above this interfacial tension, structures prefer a CYL morphology; below this energy, SPH are formed. As BCP is oxidized, it moves across the map as indicated by purple arrow. c Schematic highlighting differences between the modeled and measured systems. d Interfacial tension measurements with 2 mg mL⁻¹ of BCP injected into the chloroform embedding phase at 900 s. Oxidizing BCP reduces the interfacial tension as indicated by purple arrow