Abstract
Well-defined [poly(methyl methacrylate)]2poly(3-hexylthiophene) miktoarm star copolymers (PMMA2P3HT) were successfully synthesized via anionic coupling reaction. P3HT with two bromine groups at one chain end (P3HT-Br2) was synthesized by Williamson reaction between excess amount of tris(bromomethyl)benzene and hydroxyl-terminated P3HT. From anionic coupling reaction between living PMMA anions and P3HT-Br2, we prepared a series of PMMA2P3HTs having narrow molecular weight distribution (polydispersity index < 1.21) with various block compositions. While most P3HT-containing linear rod–coil block copolymers show only fibril structure, PMMA2P3HT shows conventional block copolymer self-assembled structures. Namely, spherical, hexagonally packed cylindrical, and lamellar microdomains including fibril structure were formed, confirmed by transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS), depending on the weight fraction of P3HT (wP3HT). Even at a wP3HT = 0.72, lamellar microdomains we...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
