Synthesis and Characterization of Bifunctional Organic-Glasses Based on Diphenylhydrazone and Barbituric Acid Derivative for Photorefractive Application

Sang Ho Lee, Chil Sung Choi, Nakjoong Kim, Dong Hoon Choi, Ki Hong Park

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2 Citations (Scopus)


A series of amorphous molecules that possess both photoconductive and electro-optic properties was synthesized in order to investigate photorefractive properties of bifunctional organic-glasses. Diethylaminobenzaldehyde-diphenylhydrazone was covalently attached to 5-(4-diethylamino-benzylidene)d,3-dimethyl-pyrimidine-2,4,6-trione through a flexible alkyl chain (3, 4, 5, 6 and 10 carbons) containing two ether linkages. The longer linkage not only lowered the glass transition temperature (T g) of the molecules, but also allowed faster orientation of the chromophore. To examine the photorefractive properties, a 50 μm-thick film was prepared from the mixture of a bifunctional molecule, butyl benzyl phthalate, and C60. The photoconductivity of this composite was as high as 8.01 × 10-12 S/cm at 60 V/μm, and the maximum diffraction efficiency (ηmax) of 50 μm-thick film was about 5% at 80 V/μm.

Original languageEnglish
Pages (from-to)1793-1798
Number of pages6
JournalBulletin of the Korean Chemical Society
Issue number12
Publication statusPublished - 2003 Dec 20
Externally publishedYes



  • Amorphous molecule
  • Bifunctional
  • Diphenyl hydrazone
  • Organic-glasses
  • Photorefractive

ASJC Scopus subject areas

  • Chemistry(all)

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