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

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A new photoconducting polymer, diphenyl hydrazone-substituted polysiloxane, was successfully synthesized by the hydrosilylation method and characterized by FT-1R, 1H-NMR, and 29Si-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-T g 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 C 60. 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 Vf/μm.

Original languageEnglish
Pages (from-to)431-436
Number of pages6
JournalMacromolecular Research
Volume11
Issue number6
Publication statusPublished - 2003 Dec 1
Externally publishedYes

Fingerprint

Siloxanes
Silicones
Hydrazones
Photorefractive materials
Hydrosilylation
Plasticizers
Diffraction efficiency
Photoconductivity
Composite materials
Chromophores
Birefringence
Electric space charge
Nuclear magnetic resonance spectroscopy
Polymers
Electric fields
Doping (additives)
Nuclear magnetic resonance
diphenyl

Keywords

  • Diphenyl hydrazone
  • Hydrosilylation
  • Photoconducting
  • Photorefractive
  • Polysiloxane

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Synthesis and characterization of a new photoconducting poly(siloxane) having pendant diphenylhydrazone for photorefractive applications. / Lee, Sang Ho; Jahng, Woong Sang; Park, Ki Hong; Kim, Nakjoong; Joo, Won Jae; Choi, Dong Hoon.

In: Macromolecular Research, Vol. 11, No. 6, 01.12.2003, p. 431-436.

Research output: Contribution to journalArticle

Lee, Sang Ho ; Jahng, Woong Sang ; Park, Ki Hong ; Kim, Nakjoong ; Joo, Won Jae ; Choi, Dong Hoon. / Synthesis and characterization of a new photoconducting poly(siloxane) having pendant diphenylhydrazone for photorefractive applications. In: Macromolecular Research. 2003 ; Vol. 11, No. 6. pp. 431-436.
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