Alternate synthetic approaches for second-order nonlinear optical polyimides

Kwang Sup Lee, Han Young Woo, Hong Ku Shim

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

Two alternate synthetic routes for nonlinear optical (NLO) polyimides are suggested, in which the drawbacks of previous methods were overcome. Two types of NLO-functionalized polyimides were prepared by simple one-pot Mitsunobu reaction between NLO-diol compounds and diimides. In addition, three functionalized second-order NLO polyimides were synthesized by step polymerization reaction between a chromophore-containing dianhydride and three different diamine compounds. This alternate approach, incorporating a nonlinear chromophore into a dianhydride monomer, may avoid the troublesome synthesis of the chromophore-containing diamine and can simplify the preparation of polyimides with various chromophores. The polymers prepared from these new synthetic routes have been characterized by physico-chemical technique, especially the second harmonic generation (SHG) method. They showed high nonlinearity and good orientational stability of the aligned dipoles.

Original languageEnglish
Pages (from-to)35-51
Number of pages17
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume20
Issue number1
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1997 International Symposium on Organic Polymeric Materials for Optical Communication and Information Storage - Taejon, S Kor
Duration: 1997 Oct 301997 Nov 1

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

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