Fig. 1. (A) Structure of functionalized PDHF-b-PEG diblock copolymers used in this study. (B) Schematic representation of the preparation of low dispersity PDHF13-b-PEG227 nanofibers produced through ‘living’ CDSA. (C) Transmission electron microscopy (TEM) images of (i) polydisperse nanofibers. (ii) Seed nanofibers (Ln: 21 nm, Lw/Ln: 1.07, σL = 8 nm). (iii) Triblock nanofibers in MeOH/THF (1 : 1, Ln = 56 nm, Lw/Ln = 1.09, σL = 18 nm), and (iv) pentablock nanofibers in H2O (Ln = 95 nm, Lw/Ln = 1.17, σL = 39 nm, Wn = 13 nm, Ww/Wn = 1.02, σW = 2 nm). Samples were prepared at 0.5 mg mL−1.
