PULSE RADIOLYSIS OF POLYSTYRENE,
Abstract
The optical absorption spectra of the transient species produced by pulse electron radiolysis of polystyrene are reported. Polystyrene samples containing various aromatic solutes, as well as solute-free polystyrene samples, were examined. In solute-free polystyrene, the negative ion of polystyrene is observed. However, in samples containing triphenylamine as a solute, the solute positive ion is observed. The decay constants of the ion populations are of the order of milliseconds. In polystyrene samples containing aromatic solutes, the only new species observed are the corresponding solute triplet state molecules. Analysis of the data indicates that the energy transfer from host polymer to solute occurs by a random walk migration of singlet state excitation energy in the polymer. Solute triplet state molecules are formed by intramolecular intersystem crossing in the solute molecule.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1967
- Accession Number
- AD0664883
Entities
People
- Harold A. Schwarz
- S. K. Ho
- Seymour Siegel
Organizations
- The Aerospace Corporation