Dynamic processes of optically induced birefringence of azo compounds in amorphous polymers below Tg

O. K. Song, C. H. Wang, M. A. Pauley

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

The growth and decay processes of the optically induced birefringence in an azobenzene-functionalized polymer, DR19FPOZ (full name 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 for the polymer system below the glass transition temperature.

Original languageEnglish (US)
Pages (from-to)6913-6919
Number of pages7
JournalMacromolecules
Volume30
Issue number22
DOIs
StatePublished - Nov 3 1997

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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