Organic-Inorganic Hybrid Material with Surface-Modified Zirconia Nanoparticles as Element Blocks
Organic-inorganic hybrid materials by dispersing inorganic nanoparticles in organic polymers are expected as functional substances with synergistic properties. Recently, high refractive index thin films are most important materials for optical devices such as flat panel display, touch panel, etc. These hybrids with dispersion of surface-modified zirconia nanoparticles can provide the controlled refractive index materials. It is necessary for the preparation of transparent hybrid materials to disperse zirconia nanoparticles in organic solvent or polymer solution by a beads mill process. Effective surface modifications of zirconia nanoparticles were successfully developed by two treatments of (1) with silane coupling agent and isocyanate compound and (2) with dual-site silane coupling agent. These dispersions can be applied to prepare the high refractive index thin films.
KeywordsNanoparticles High refractive index Organic-inorganic hybrids Thin films
We thank Dr. Yuki Minami (Mikuni Color Ltd.), Mr. Eiichiro Takeuchi (Osaka Institute of Technology), Mr. Takashi Fukuda, and Mr. Atsushi Sasaki (Osaka Tele-communication University). This work was supported in part by a Grant-in-Aid for Scientific Research on Innovative Areas “New Polymeric Materials Based on Element-Blocks (No. 2401)” provided by the Ministry of Education, Culture, Sports, Science and Technology, Japan.
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