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Abstract

A novel high refractive index hybrid films were produced by combination of carbazole phenoxy random copolymers and titania. The random copolymers were prepared first by copolymerization of carbazole phenoxy based methacrylate(CPBM) and 3-(trimethoxysilyl)propyl methacrylate (TMPMA), subsequently a titania precursor, Ti(OBu)4, and the random copolymer reacted together to forma high-refraction film through no acid, in-situ sol-gel process. The HNMR and T-IR results indicated that CPBM and the CPBM random copolymer/titania hybrid materials were successfully prepared. The hybrid film using 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 prepared 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.