Poly(ethylene oxide) has been coupled to poly(3-hexylthiophene) using esterification to produce pure diblock copolymers, highly relevant for use in organic electronic devices. The new synthetic route described herein uses a metal-free coupling step, for the first time, to afford well-defined polymers in high yields following facile purification.
Erothu, H., Sohdi, A., Kumar, A. C., Sutherland, A., Dagron-Lartigau, C., Allal, A., Hiorns, R., & Topham, P. (2013). Facile synthesis of poly(3-hexylthiophene)-block-poly(ethylene oxide) copolymers via Steglich esterification. Polymer Chemistry, 4(13), 3652-3655. https://doi.org/10.1039/c3py00505d