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).
- Fullerene complexes
- Inelastic neutron scattering
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering