Fig. 3. (a) Low resolution TEM image of PNR₃₁-b-PRc₄₉ micelles via ROMPI-CDSA; the inset shows the high resolution image; the statistical plots show data of lengths and aspect ratios; (b) high-resolution TEM image of PNR₃₁-b-PRc₄₉ micelles formed after polymerization, the inset image shows the SAED pattern; (c) AFM height image and profile of PNR₃₁-b-PRc₄₉ micelles; the height profile is from the indicated dash line; (d) a schematic diagram illustrating the chain folding of the crystalline PRc core. The stick-ball structure indicates the possible alignment of PRc segment along the perpendicular direction.