[20p-PA3-1~42] 12.3 Functional Materials and Novel Devices

[20p-PA3-8] Mechanism of increase in refractive index of hybrid material by wet annealing

〇Ryota Narita¹, Bin Cai², Masaya Mitsuishi³, Okihiro Sugihara¹ (1.Utsunomiya Univ., 2.Univ of Shanghai for Science and Technology., 3.Tohoku Univ.)

Keywords:hybrid material, wet annealing, thermoplastic resin

In recent years, the demand for optical materials with high refractive index (RI) and high transparency has increased. A polymer hybridized with high-RI nanoparticles, such as TiO₂ (n_TiO2 = 2.5-2.7) is one of high-RI materials. Moreover, wet annealing has been reported as a method further increasing the RI of polymer nanohybrid composites. However, its mechanism has not been clarified. We investigated the mechanism by analyzing the change in components of the polymer nanohybrid composites before and after wet annealing.