Abstract
We have investigated the ultrafast dynamics of aqueous polyvinylpyrrolidone (PVP) solutions by means of femtosecond optical Kerr effect spectroscopy. To understand the unique nature of the ultrafast dynamics of polymer solutions, the ultrafast dynamics of aqueous 1-ethyl-2-pyrrolidone (EP) solutions has also been measured as a control experiment. Aqueous PVP solutions show a strongly underdamped Kerr transient, but aqueous EP solutions shows a weakly underdamped Kerr transient. From the low frequency Kerr spectra obtained by the Fourier transform analysis, the strongly underdamped dynamics of aqueous PVP solutions compared with aqueous EP solutions is due to the suppression of the low frequency intermolecular motions (< 50 cm -1).
| Original language | English |
|---|---|
| Pages | 3247-3248 |
| Number of pages | 2 |
| Publication status | Published - Dec 1 2005 |
| Event | 54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: Sep 20 2005 → Sep 22 2005 |
Other
| Other | 54th SPSJ Symposium on Macromolecules |
|---|---|
| Country | Japan |
| City | Yamagata |
| Period | 9/20/05 → 9/22/05 |
Keywords
- Femtosecond OKE spectroscopy
- Polymer solutions
- Polyvinylpyrrolidone
- Ultrafast dynamics
ASJC Scopus subject areas
- Engineering(all)