Macromolecular Research

, Volume 11, Issue 6, pp 431–436

Synthesis and characterization of a new photoconducting poly(siloxane) having pendant diphenylhydrazone for photorefractive applications

  • Sang Ho Lee
  • Woong Sang Jahng
  • Ki Hong Park
  • Nakjoong Kim
  • Won-Jae Joo
  • Dong Hoon Choi
Article

DOI: 10.1007/BF03218972

Cite this article as:
Lee, S.H., Jahng, W.S., Park, K.H. et al. Macromol. Res. (2003) 11: 431. doi:10.1007/BF03218972

Abstract

A new photoconducting polymer, diphenyl hydrazone-substituted polysiloxane, was successfully synthesized by the hydrosilylation method and characterized by FT-IR,1H-NMR, and29Si-NMR spectroscopy. The glass transition temperature (Tg) of the polysiloxane having pendant diphenyl hydrazone was ca. 62 °C, which enabled a component of a low-Tg photorefractive material to be prepared without the addition of any plasticizers. This polysiloxane, with 1 wt% of C60 dopant, showed a high photoconductivity (2.8×10−12 S/cm at 70 V/μm) at 633 nm, which is necessary for fast build-up of the space-charge field. A photorefractive composite was prepared by adding a nonlinear optical chromophore, 2-{3-[2-(dibutylamino)-1-ethenyl]-5,5-dimethyl-2-cyclohexenylidene} malononitrile, into the photoconducting polysiloxane together with C60. This composite shows a large orientation birefringence (Δn=2.6×10−3 at 50 V/μm) and a high diffraction efficiency of 81% at an electric field of 40 V/μm.

Keywords

photorefractive diphenyl hydrazone polysiloxane photoconducting hydrosilylation 

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Copyright information

© Polymer Society of Korea 2003

Authors and Affiliations

  • Sang Ho Lee
    • 1
  • Woong Sang Jahng
    • 1
  • Ki Hong Park
    • 1
  • Nakjoong Kim
    • 2
  • Won-Jae Joo
    • 2
  • Dong Hoon Choi
    • 3
  1. 1.Optoelectronic Materials Research CenterKorea Institute of Science and TechnologySeoulKorea
  2. 2.Department of ChemistryHanyang UniversitySeoulKorea
  3. 3.College of Environment & Applied ChemistryKyunghee UniversityKyungki-doKorea

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