Dynamic Processes of Optically Induced Birefringence of Azo Compounds in Amorphous Polymers below Tg.
Abstract
The growth and decay processes of the optically induced birefringence in an azobenzene functionalized polymer, DRI9FPOZ (full given in the text) and in another azobenzene guest/host polymer system have been studied. The temperature dependence of the birefringence signal is studied and possible mechanisms associated with the growth and decay segments of the signal are analyzed. Rate constants deduced from the optically induced birefringence signal are also investigated as a function of the laser excitation power and film thickness. The rate constants associated with the growth and decay processes and activation energies are obtained from the Arrhenius plots of the temperature dependent rate constants below the glass transition temperature of the polymer system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1996
- Accession Number
- ADA307909
Entities
People
- C. H. Wang
- M. A. Pauley
- O. -k. Song
Organizations
- University of Nebraska-Lincoln Department of Chemistry