In situ synthesis of transparent TiO2 nanoparticle/polymer hybrid
2013
Asai, Toshihiko | Sakamoto, Wataru | Yogo, Toshinobu
Transparent TiO₂nanoparticle/polymer hybrids were synthesized from titanium isopropoxy methacrylate via hydrolysis and polymerization in 2-methoxymethanol. Crystalline TiO₂nanoparticles were uniformly dispersed in the polymer matrix. A highly transparent free-standing TiO₂nanoparticle/polymer hybrid film was synthesized. The refractive index (RI) of the hybrid films on Si substrates could be controlled by varying the concentration of TiO₂nanoparticles: the RI increased with increase in Ti content. A further increase in the RI was achieved upon irradiation with ultraviolet light. A TiO₂nanoparticle/PMMA hybrid without the silica component exhibited an RI of 1.717 and an Abbe number of 21.6.
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