Fig. 1.

Phase diagram of micron-sized particles derived from aqueous hydration of PEO-b-PCL copolymers. Morphologies were determined qualitatively from fluorescence confocal microscopic studies of the self-assembled structures formed from thin film rehydration of 50:1 molar ratios of copolymer:Nile Red. Observed polymersome and irregularly shaped particle (IP) diameters ranged from less than 1 µm to greater than 30 µm; microsphere (MS) diameters ranged from ~5 – 30 µm; vesicles (V) diameters spanned ~5 – 50 µm. For systems exhibiting mixed morphologies, the major component is reported first.