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2005-09-01 - Article/Dans un journal avec peer-review - Anglais - 9 page(s)

Surin Mathieu , Sonar P., Grimsdale A.C., Müllen K., Lazzaroni Roberto , Leclère Philippe , "Supramolecular Organization in Fluorene/Indenofluorene - Oligothiophene Alternating Conjugated Copolymers" in Advanced Functional Materials, 15, 9, 1426-1434

  • Edition : Wiley-VCH Verlag, Weinheim (Germany)
  • Codes CREF : Physico-chimie générale (DI1320), Chimie structurale (DI1317), Chimie des polymères de synthèse (DI131C), Optique (DI1250)
  • Unités de recherche UMONS : Chimie des matériaux nouveaux (S817)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) A series of conjugated copolymers containing fluorene or indenofluorene units alternating with oligothiophene segments, with potential interest for use as the active layer in field-effect transistors, is investigated. Atomic force microscopy analysis of the morphology of thin deposits shows either the formation of fibrillar structures, which are the signature of long-range p stacking, or the presence of untextured aggregates, resulting from disordered assembly. These morphologies are interpreted in terms of the supramolecular organization of the conjugated chains. Molecular modeling simulations indicate that the commensurability between the lengths of the monomer units and the presence of alkyl side groups are the two key structural factors governing the chain organization into highly ordered assemblies. The most favorable structures are those combining fluorene (indenofluorene) units with unsubstituted bithiophene (terthiophene) segments.

Notes :
  • (Anglais) Lecture en ligne: http://onlinelibrary.wiley.com/doi/10.1002/adfm.200500241/pdf
  • (Anglais) Publié le 26 juillet 2005
Identifiants :
  • ISSN : 1616-301X
  • DOI : 10.1002/adfm.200500241