Control of the photorefractive effect using a low Tg sol-gel glass

Dong Hoon Choi, Woongi Jun, Kwang Yong Oh, Jae Hong Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We prepared the photorefractive sol-gel glass based on organic-inorganic hybrid materials containing a charge transporting molecule, second-order nonlinear optical chromophore, photosensitizer, and plasticizer. Carbazole and 2-{4-[(2-hydroxyethyl) methylamino] benzylidene}malononitrile were reacted with 3-isocyanatopropyl triethoxysilane and the functionalized silanes were employed to fabricate the efficient photorefractive media including 2,4,7-trinitrofluorenone (TNF) to form a charge transfer complex. The simplest way to vary the composition in the matrix was to mix the desired amount of the functionalized alkoxysilane. The prepared sol-gel glass samples contained a large amount of nonlinear optical (NLO) chromophore compared to that of the charge transporting molecules. They showed a large net gain coefficient and high diffraction efficiency at certain conditions.

Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalPolymer Bulletin
Issue number2-3
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry


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