Poled Ordered Phenoxysilicon Polymer as Second Order Nonlinear Optical Materials.(Reannouncement with New Availability Information)

摘要

Sol-gel technology provides an attractive route to the preparation of a three-dimensional inorganic network. The basic sol-gel process involves the sequential hydrolysis and polycondensation of silicon alkoxide at a temperature that is usually used to process organic polymers. Numerous chromophores have been incorporated into glassy materials. There also have been other reports on the NLO sol-gel process, where large concentrations of NLO chromophore directly to the silicon atom. A second order NLO organic/inorganic composite based on an alkoxysilane dye and a polymide also has been reported. The approaches discussed earlier mainly dealt with incorporation of organic dyes or polymers into a typical sol-gel polymerization scheme. In this work we have extended the sol-gel concept to the polymerization of a multifunctional organic compound and an alkoxysilane dye. We have provided a general approach to the design of the multifunctional alkoxysilane dye for second order nonlinear optics in which the NLO chromophore can be covalently incorporated into an alkoxysilane. In this investigation, we report the properties of an alkoxysilanes covalently bonded to an NLO chromophore, which was reacted with 1,1,1-tris (4-hydroxyphenyl) ethane to form a crosslinked phenoxysilicon material.