The Photophysics of Poly(methylphenylphosphazene)
Abstract
The photophysical properties of poly(alkylarylphosphazenes), particularly poly(methylphenylphosphazene). PMPP, with a methyl and a phenyl group on the phosphazene phosphorous atom, have been investigated using absorption and emission spectroscopy, as well as laser flash photolysis. The fluorescence spectrum of PMPP shows a red-shifted emission (decay time greater than 1 nanosecond) with a maximum at 430 nm when excited at 270 nm in solvents of varying polarity. The absence of a strong solvent effect on the position and the structure of the fluorescence spectrum suggests that the emission is not due to a charge-transfer state, but originates from a significant geometry shift in the excited state. The triplet state of PMPP was identified by laser flash photolysis. The phosphorescence spectrum of PMPP indicates a triplet energy of 79 kcal/mol.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 13, 1993
- Accession Number
- ADA267321
Entities
People
- C. E. Hoyle
- D. Creed
- I. B. Rufus
- P. Chatterton
- P. Subramanian
Organizations
- University of Southern Mississippi