Confined Crystallization in Poly(3-alkylthiophene)-containing Diblock Copolymers

POSTER

Abstract

Confined crystallization within a diblock copolymer of a conjugated, semiconducting poly(3-alkylthiophene) (P3AT) block has been achieved by selecting an alkyl side chain that significantly depresses the crystalline driving force relative to the self-assembly driving force. Here, we demonstrate flow alignment of these P3AT-containing diblocks. In addition, we show that the chain axis of the semicrystalline P3AT orients preferentially relative to domain interfaces; the degree of crystalline orientation may be controlled as a function of domain width. Further work will examine the role of thermal treatments on crystallite orientation and morphology within confinement.

Authors

  • Emily Davidson

    • Univ of California - Berkeley

  • Victor Ho

    • University of California, Berkeley
    • Dept of Chemical Engineering, UC Berkeley
    • Univ of California - Berkeley

  • Bryan Beckingham

    • Univ of California - Berkeley

  • Rachel Segalman

    • Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California
    • University of California, Berkeley
    • Dept of Chemical Engineering, UC Berkeley
    • Univ of California - Berkeley
    • Department of Chemical and Biomolecular Engineering, UC Berkeley
    • University of California-Berkeley, Lawrence Berkeley Lab