Alternate synthetic approaches for soluble second-order nonlinear optical polyimides

Kwang Sup Lee, Han Young Woo, Tae Dong Kim, Hong Ku Shim

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


Several soluble second-order nonlinear optical (NLO) polyimides with various chromophore structures were synthesized by two alternate synthetic approaches to overcome the disadvantages of currently used methods. In the first approach, the NLO polyimides were prepared by the step-growth polymerization reaction between a chromophore-containing dianhydride and diamine compounds. This method can avoid the troublesome syntheses of the chromophore-containing diamine and can provide easy preparation of the polyimides with various chromophores. In the second approach, we synthesized the NLO polyimides by the simple one-step Mitsunobu reaction between NLO-diol compounds and diimides. Using this method, the polyimide system was directly formed during condensation polymerization without thermal imidization step at high temperatures. All polymers derived from these new synthetic routes exhibited high second harmonic generation (SHG) activities as well as good thermal and temporal stabilities of the SHG signal.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Issue number1-4
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1998 4th International Conference on Organic Nonlinear Optics (ICONO'4) - The 8th IKETANI Conference - Chitose, Jpn
Duration: 1998 Oct 121998 Oct 15

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics


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