Thermally stable NLO materials based on organosoluble polyimides and an alkoxysilane dye via sol-gel process
Journal
Journal of Macromolecular Science - Pure and Applied Chemistry
Journal Volume
38 A
Journal Issue
8
Pages
821-837
Date Issued
2001
Author(s)
Abstract
Abstract A series of organic-inorganic materials based on organosoluble polyimides and an alkoxysilane dye for second-order nonlinear optics have been developed. A sol-gel reaction of a nonlinear optically active alkoxysilane dye (ASD) is utilized to grow a network in polymer matrices or create an interpolymer network among polyimide chains. SEM results indicate that the inorganic networks are distributed uniformly throughout the polymer matrices on the molecular scale. The silica particle sizes are well under 1 μm. Second harmonic coefficients, d33 of 8.4 to 47.6 pm/V have been obtained for the poled/ cured polyimide/ASD samples. Excellent temporal stability was obtained for these NLO materials at 100°C. The composition effect on the second order nonlinearity is also reported. Keywords: Nonlinear opticsPolyimideSol-gel processOrganic-inorganic ACKNOWLEDGMENT The authors thank the National Science Council of Taiwan, ROC, for financial support (Grant NSC89-2216-E-005-002).
Type
journal article