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2010-10-15 - Article/Dans un journal avec peer-review - Anglais - 7 page(s)

Grancharov Georgy, Coulembier Olivier , Surin Mathieu , Lazzaroni Roberto , Dubois Philippe , "Stereocomplexed materials based on poly(3-hexylthiophene)-b-poly(lactide) block copolymers : synthesis by organic catalysis, thermal properties and microscopic morphology" in Macromolecules, 43, 21, 8957-8964

  • Edition : American Chemical Society (ACS) (DC)
  • Codes CREF : Chimie macromoléculaire (DI1315), Catalyses hétérogène et homogène (DI1334)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816), Chimie des matériaux nouveaux (S817)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) A new approach to control the supramolecular organization of conjugated polymers is proposed, based on stereocomplex formation. It is illustrated by mixing polymer solutions of block copolymers, i.e., poly(3-hexylthiophene)-b-poly(l-lactide) and poly(3-hexylthiophene)-b-poly(d-lactide). The block copolymers were successfully synthesized via a three-step procedure including the use of metal-free organic catalysts in the ring-opening polymerization of l- and d-lactide. The thermal properties and microscopic morphology of sterecomplexed diblock copolymers show that the stereocomplexation of the polylactide blocks is able to prevent the crystallization of the regioregular poly(3-hexylthiophene) block into long-range ordered parallel fibrillar structures. Stereocomplexation is also observed when mixing poly(d-lactide) homopolymer and poly(3-hexylthiophene)-b-poly(l-lactide) block copolymer.

Notes :
  • (Anglais) Publiée en ligne le 13 octobre 2010
Identifiants :
  • DOI : 10.1021/ma1012336