Mechanisms of the self-organization of star-shaped polymers with a varied structure of branching center based on fullerene C 60 in solutions

V. T. Lebedev, Gy Török, L. V. Vinogradova

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1 Citation (Scopus)

Abstract

The self-organization of star-shaped polymers in toluene has been studied by small-angle neutron scattering. Polystyrene stars with a mono-C 60 branching center are ordered into globular clusters (∼1700 nm in diameter), whereas stars with a double (C 60-C 60) center are ordered into anisotropic structures (super-chains), which are linked (depending on the concentration) into triads (chain clusters ∼2500 nm in diameter). On the contrary, heteroarm polystyrene and poly-2-vinylpyridine stars with a C 60 center are weakly associated into dimers. Moderately polar stars with arms composed of polystyrene and diblock copolymer (poly-2-vinylpyridine- poly-tret-butyl methacrylate) form short chains composed of four macromolecules, while stars of higher polarity based on polystyrene and poly-tret-butyl methacrylate form clusters containing ∼12 macromolecules ∼50 nm in diameter. Thus, by varying the structure of the center and the arm polarity, one can control the modes of star structuring.

Original languageEnglish
Pages (from-to)1118-1122
Number of pages5
JournalCrystallography Reports
Volume56
Issue number7
DOIs
Publication statusPublished - Dec 1 2011

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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