UV study on the thermal stability of disperse red 1 films incorporated with reactive silica

Jae Suk Lee, Young Sun Cho, Gyoujin Cho, Kyeong Taek Jung, Yong Gun Shul, Moon Gun Choi

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The thermal stability of thin DR1/PMMA, DR1/silica, and DRS/silica systems was studied by UV spectroscopy. DRS which can covalently bind with reactive silica was synthesized between 4-[ethyl(2-hydroxyethyl) amino]-4′-nitro azobenzene (disperse red 1, DR1) and 3-isocyanatopropyl triethoxy silane, The characterization of chemicals and incorporated films were carried out by UV/VIS spectroscopy, DTA, 1H- and 13C-NMR, and FT-IR. After poling of DR1 and DRS incorporated at various temperatures, the UV absorbance decreased due to the alignment of DR1 and DRS by electric field. The second harmonic generation response was obtained by using Nd: YAG laser. The thermal stability of DRS and DRS/silica system was enhanced, compared to that of DR1 and DR1/silica system, respectively.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 1996 Jan 1


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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