Dynamics of complexes of poly(N-vinylpyrrolidone)-C60 in aqueous solution

Gy Török, V. T. Lebedev, L. Cser, D. N. Orlova, A. I. Sibilev, V. N. Zgonnik, E. Yu Melenevskaya, L. V. Vinogradova, M. A. Sibileva

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Abstract

Hydration of complexes of poly(N-vinylpyrrolidone) (PVP) with C 60 has been studied by SANS and NSE to elucidate their self-assembly induced by small amounts of fullerene (∼ 10-6wt%) in solution. As compared to PVP in D2O, the complexes (C60 + 8 PVP), forming fractal structures, displayed specific molecular dynamics in the time range t = 0.2-20 ns at momentum transfer q∼0.3-0.6 nm-1 comparable with inverse PVP segmental size. By heating up to 80°C the complexes became locally ordered that leads to their oscillating dynamics (soft mode: ℏΩ ∼200 neV at q ∼ 0.27 nm-1).

Original languageEnglish
Pages (from-to)e415-e418
JournalPhysica B: Condensed Matter
Volume350
Issue number1-3 SUPPL. 1
DOIs
Publication statusPublished - Jul 15 2004

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Keywords

  • Fullerene complexes
  • Inelastic neutron scattering
  • NSE

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Török, G., Lebedev, V. T., Cser, L., Orlova, D. N., Sibilev, A. I., Zgonnik, V. N., Melenevskaya, E. Y., Vinogradova, L. V., & Sibileva, M. A. (2004). Dynamics of complexes of poly(N-vinylpyrrolidone)-C60 in aqueous solution. Physica B: Condensed Matter, 350(1-3 SUPPL. 1), e415-e418. https://doi.org/10.1016/j.physb.2004.03.138