Tuning of photo- and electroluminescence in alkylated polythiophenes with well-defined regioregularity

Authors

  • Richard E. Gill,

    1. Polymer Chemistry Laboratory, Materials Science Center Department of Chemistry, University of Groningen Nijenborgh 4, 9747 AG Groningen (The Netherlands)
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  • George G. Malliaras,

    1. Polymer Chemistry Laboratory, Materials Science Center Department of Chemistry, University of Groningen Nijenborgh 4, 9747 AG Groningen (The Netherlands)
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  • Jurjen Wildeman,

    1. Polymer Chemistry Laboratory, Materials Science Center Department of Chemistry, University of Groningen Nijenborgh 4, 9747 AG Groningen (The Netherlands)
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  • Prof. Georges Hadziioannou

    Corresponding author
    1. Polymer Chemistry Laboratory, Materials Science Center Department of Chemistry, University of Groningen Nijenborgh 4, 9747 AG Groningen (The Netherlands)
    • Polymer Chemistry Laboratory, Materials Science Center Department of Chemistry, University of Groningen Nijenborgh 4, 9747 AG Groningen (The Netherlands)
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  • Financial support from “Stichting Scheikundig Onderzoek Nederland” (SON) and “Stichting Toegepaste Wetenschappen” (STW) is gratefully acknowledged. Stephania Lampoura, Erasmus student from the Physics Department of Thessaloniki University, is acknowledged for her contribution to the electroluminescence experiments.

Abstract

Color tuning of luminescence via molecular engineering of the active polymer is important for the commercial application of π-conjugated polymers in photonic devices. The synthesis of a series of regiospecific alkylated polythiophenes is described, in which the effective conjugation length could be varied by altering the length of the coplanar blocks between head-to-head dyads. It is demonstrated that the color-tuned materials obtained by this novel approach are potentially suitable for applicationin displays and other devices.

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