Unusually fast optically induced birefringence in polyoxetanes bearing 4-(N,N-diphenyl)amino-4′-nitroazobenzene chromophores

Soon Wook Cha, Dong Hoon Choi, Jung Il Jin

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Two new polyoxetane polymers bearing azobenzene-type chromophore pendants were prepared, and their photoinduced molecular orientation and relaxation were studied. The two polymers differ in the mode of attachment of the chromophores, which are either laterally (Pox 1) or perpendicularly (Pox 2) bound to the polymer backbone. The two polymers reveal unusually fast (∼2 s to saturation at 0.4 W/cm2) photoinduced reorientation of chromophores and decay behavior at room temperature. Side-on attachment of the chromophores (Pox 1) results in a significantly faster response to polarized light and higher maximum birefringence than end-on attachment. The kinetics of photoinduced orientation and relaxation decay were quantitatively analyzed and the results are discussed in relation to the structures of the polymers.

Original languageEnglish
Pages (from-to)355-360
Number of pages6
JournalAdvanced Funtional Materials
Volume11
Issue number5
DOIs
Publication statusPublished - 2001 Oct
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this