Structural features of fullerene-containing star-shaped polystyrene molecules with Oligomer arms in solutions

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

Research output: Contribution to journalReview article

3 Citations (Scopus)

Abstract

The structure and conformational properties of star-shaped oligostyrenes containing fullerene C60 as a branching center and short arms with lengths at the level of the persistent length or a segment of a polystyrene chain are studied by small-angle neutron scattering in deuterotoluene. The gyration radii of linear precursor oligomers (∼0.4 and 0.6 nm) and corresponding star-shaped molecules (∼1.1 and 1.4 nm) are calculated under the Guinier approximation. The linear oligomer (4-5 units) is found to be a rodlike molecule; arms of star-shaped molecules based on it assume the straightened conformations as well. Linear oligomer chains composed of 6-7 units deviate from the rodlike shape and acquire a certain flexibility in solution, but oligomer chains grafted onto the C60 center preserve the extended conformations. There is no marked tendency toward screening of fullerene by radially extended arms. The number of branches in the star-shaped oligostyrenes corresponds to a functionality of f = 6 preset by the conditions of synthesis.

Original languageEnglish
Pages (from-to)32-38
Number of pages7
JournalPolymer Science - Series A
Volume55
Issue number1
DOIs
Publication statusPublished - Jan 1 2013

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ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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