Abstract
The ultrafast dynamics of polybutadiene have been studied using ultrafast optical-Kerr-effect spectroscopy. The data are compared with measurements on 1,3- and 1,4-pentadiene. The two diene derivatives have quite distinct subpicosecond dynamics, with an important contribution from an intramolecular torsional mode in the 1,4-derivative. The main part of the polymer spectral density can be assigned, by analogy with the data for 1,4-pentadiene, to intramolecular torsional motion about carbon-carbon single bonds. The picosecond diffusive orientational relaxation times of the dienes are not well described by simple hydrodynamics.
| Original language | English |
|---|---|
| Pages (from-to) | 368-373 |
| Number of pages | 6 |
| Journal | Chemical Physics Letters |
| Volume | 400 |
| Issue number | 4-6 |
| DOIs | |
| Publication status | Published - 21 Dec 2004 |
Keywords
- intermolecular dynamics
- raman spectroscopy
- isotropic phase
- liquid crystals
- glasses
- microemulsions
- modes