A double helical structure formed from an amorphous, achiral ABC triblock terpolymer

Hiroshi Jinnai, Takeshi Kaneko, Kazuyuki Matsunaga, Clarissa Abetz, Volker Abetz

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

Abstract

We present the experimental visualization of the three-dimensional (3D) helical morphology of a polystyrene-block-polybutadiene-block-poly(methyl methacrylate) triblock terpolymer (SBM) using transmission electron microtomography. Our results uncovered a left-handed (and to a similar degree, right-handed) double helical structure composed of polybutadiene (PB) helical microdomains around polystyrene (PS) cores. The addition of short polystyrene chains into the PS cores by solution blending was found to be essential to control the pitch of the helix. We further discovered that the self-assembly in thin films of the present helical structure forms a thickness-independent stable alignment of the helical fibers arrayed in a honeycomb board perpendicular to the film plane.

Original languageEnglish
Pages (from-to)2042-2046
Number of pages5
JournalSoft Matter
Volume5
Issue number10
DOIs
Publication statusPublished - 2009 Jun 29
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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