Abstract
A novel high refractive index hybrid film was produced by hybridization of carbazole phenoxy based copolymers and titania. The random copolymer was prepared first by copolymerization of carbazole phenoxy based methacrylate(CPBM) and 3-(trimethoxysilyl)propyl methacrylate, and then a titania precursor, Ti(OBu)4 was reacted with the copolymer to form a high-refraction film through in-situ sol-gel process. The 1H NMR and FT-IR results confirmed that CPBM and the CPBM copolymer/titania hybrid materials were successfully prepared. The hybrid film made from CPBM had a high refractive index in the range 1.68 ∼ 1.77, proportional to the content of the titania precursor in the hybrid, which was higher than the film from MMA. The CPBM based hybrid solution produced a much smooth film by spin coating compared to the hybrid from MMA, which could be attributed to a low glass transition temperature of CPBM. The TGA results of the hybrid materials revealed good thermal stability.
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