Synthesis and properties of photorefractive polyimine with carbazole unit

Han Young Woo, Kwang Sup Lee, Hong Ku Shim, Bong Ki Kim, Bum Ku Rhee

Research output: Contribution to journalConference articlepeer-review


A new fully functionalized photorefractive polyimine was prepared by the condensation polymerization between a photoconducting carbazole derivative, 9-(2-ethylhexyl)carbazole-3,6-dicarbaldehyde, and a nonlinear optical stilbene chromophore, 4-[N,N-bis(2-aminoethyl)amino]-4′-nitrostilbene. It showed excellent solubility in common organic solvents such as chloroform, cyclohexanone, tetrahydrofuran, etc. and high optical quality films were obtained by free standing film casting. Very high second order optical nonlinearity with d33 = 120 pm/V was observed by second harmonic generation at the fundamental 1064 nm wavelength. It demonstrated good thermal stability of the aligned dipoles by electric field up to ca. 125°C. The diffraction grating was formed by the interference of two coherent Ar-ion laser beam at the wavelength of 488 nm. A holographic diffraction efficiency of about 15% has been achieved in a 10 μm-thick film. Storage state of our film shows remarkably long stability at room temperature.

Original languageEnglish
Pages (from-to)142-151
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1998
Externally publishedYes
EventXerographic Photoreceptors and Organic Photorefractic Materials IV - San Diego, CA, United States
Duration: 1998 Jul 221998 Jul 23


  • Carbazole
  • Diffraction efficiency
  • Photorefractive polymer
  • Polyimine
  • Second-harmonic generation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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