Stable second-order nonlinear optical properties of sol-gel systems; incorporated disperse red1 into the silica network by covalent bonding

Yong Gun Shul, Kyeong Taek Jung, Gyoujin Cho, Jae Suk Lee, Tatsuo Wada, Hiroyuki Sasabe, Mie Won Jung, Moon Gun Choi

Research output: Contribution to journalConference article

1 Citation (Scopus)


Modified DR-1 (DRS) which can covalently bind with tetraethyl orthosilicate in sol-gel media was synthesized with the reaction between 4-[ethyl(2-hydroxyethyl)amino]-4′-nitro azobenzene (DR1) and 3-isocyanatopropyl tri-ethoxy silane (SIO). From the 1H- and 13C-NMR spectra of the DRS, it proves that terminal -OH group of DR1 reacts with carbonyl group of SIO by nucleophilic addition. After poling the DRS incorporated film, the UV absorbance decreased and SHG response was obtained by using Nd:YAG laser. The thermal stability of DRS was enhanced due to the molecular incorporation of DR1 into the silica network.

Original languageEnglish
Pages (from-to)411-414
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Issue number1-4
Publication statusPublished - 1996 Jan 1
EventProceedings of the 1995 2nd International Conference on Organic Nonlinear Optics, ICONO'2 - Kusatsu, Jpn
Duration: 1995 Jul 231995 Jul 26


All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Condensed Matter Physics

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