Poly(3-hexylthiophene) based block copolymers prepared by "click" chemistry

Abstract : pi-Conjugated block copolymers have been prepared from terminal azide functionalized polystyrenes (PS) and alkyne functionalized poly (3-hexylthiophene)s (P3HT) via a copper(I) catalyzed Huisgen [3 + 2] dipolar cycloaddition reaction. The functionalized alpha-azido-PS homopolymer was prepared by atom transfer radical polymerization from a specifically designed initiator bearing the azide function, whereas omega-ethynyl-P3HT and a,alpha,omega-pentynyl-P3HT were synthesized by a modified Grignard metathesis polymerization using alkynyl Grignard derivatives. The electronic environment of the alkynyl end groups was shown to be decisive in determining triazole ring formation.
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Submitted on : Thursday, November 20, 2008 - 4:02:13 PM
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Mathieu Urien, Harikrishna Erothu, Eric Cloutet, Roger C. Hiorns, Laurence Vignau, et al.. Poly(3-hexylthiophene) based block copolymers prepared by "click" chemistry. International Journal of Biological Macromolecules, Elsevier, 2008, 41 (19), pp.7033-7040. ⟨10.1021/ma800659a⟩. ⟨hal-00340347⟩



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