Crosslinkable maleimide copolymers for stable NLO properties

I. E. Serhatli, Y. Yagci*, E. Hattemer, R. Zentel, E. Schmälzlin, S. Hohenadl, C. Bräuchle, K. Meerholz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Second-order, nonlinear optical polymers based on epoxy-substituted methylvinylisocyanates and N-substituted maleimides were synthesized and characterized with spectral and thermal analysis. The photocrosslinking and thermal-crosslinking reactions of copolymers with different chromophore contents were studied. Thermally induced crosslinking during the poling process, performed at the glass-transition temperature (Tg), was prevented by Tg being decreased through the addition of a plasticizer. Electrooptic coefficients (r33), measured for crosslinked and noncrosslinked systems, had similar absolute values and relaxation dynamics. This behavior was explained in terms of the similar rotational mobility of the chromophore units and the paucity of crosslinking sites.

Original languageEnglish
Pages (from-to)1589-1595
Number of pages7
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume39
Issue number10
DOIs
Publication statusPublished - 15 May 2001

Keywords

  • Crosslinking
  • Maleimide copolymers
  • Nonlinear optical polymers

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