Development of Conducting Polymers of High Structural Strength
Abstract
Magnetic resonance measurements confirmed the fundamental pi-electron nature of the solitonic defect in polyacetylene. It is clear that the defect is delocalized with the exact extent and nature of delocalization dependent upon the lattice. For some polymer preparations, helium temperatures are required to freeze out dynamics and yield resolved ENDOR spectra. For these materials, the barriers to soliton delocalization must be small. Because of the dependence of ENDOR spectra upon polymer lattice, solliton concentration, temperature, it is clear that the intrinsic (isolated chain) soliton localization/delocalization length cannot be obtained from the experimental data. The ratio of positive to negative spin densities appears not to change with polymer lattice that these are likely determined by intramolecular electron coulomb interactions. Most theoretical calculations are in reasonable agreement with the experimental numbers. Polymers.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1988
- Accession Number
- ADA200310
Entities
People
- Larry Dalton
Organizations
- University of Southern California