An alternate synthetic route for the soluble nonlinear optical polyimides

Han Young Woo, Ki Jeong Moon, Hong Ku Shim, Kwang Sup Lee, Mi Yun Jeong, Tong Kun Lim

Research output: Contribution to journalConference articlepeer-review


Two functionalized second-order nonlinear optical polyimides were synthesized by the polycondensation reaction between chromophore-containing dianhydride and diamine monomer. The molecular weights of the final polymers were determined to be Mn=10000-11800. No melting was detected and they showed relatively low glass transition temperature at 160.7°C and 180.7°C due to ether linkage in the polymer backbone. In the case of PI2-DANS, high optical quality films were prepared by spin casting. The second harmonic generation coefficients, d33 and d31 of PI2-DANS were measured to be 24 and 4.8 pm/V respectively. They exhibited no decay until ca. 100°C.

Original languageEnglish
Pages (from-to)39-42
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 1998
Externally publishedYes
EventProceedings of the 1998 IEEE Instrumentation and Measurement Technology Conference, IMTC. Part 1 (of 2) - St.Paul, MN, USA
Duration: 1998 May 181998 May 21


  • Nonlinear optics (NLO)
  • Polyimides
  • Second harmonic generation

ASJC Scopus subject areas

  • Condensed Matter Physics


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