Preparation of UV-cured organic-inorganic hybrid materials with low refractive index for multilayer film applications

Takuya Uehara, Masaru Nakagawa, Okihiro Sugihara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Ultraviolet (UV)-cured organic-inorganic hybrid materials with low refractive index (<1.40) were prepared for multilayer film applications. The hybrid materials comprised hollow silica nanoparticles modified with trialkoxysilane-derived reactive coupling agents. The average number of modifier molecules on the surface of a hollow silica nanoparticle was 0.47 molecule/nm2. The modified hollow silica nanoparticles were homogeneously mixed with UV-curable resins, which induced radical photopolymerization. A UV-cured film containing 60 wt% hollow silica nanoparticles showed a transmittance 99 > of% in the visible and nearinfrared regions and a low refractive index of 1.372 at 633 nm. A TiO2- containing UV-cured hybrid film with high refractive index was easily coated on the UV-cured low-refractive-index film.

Original languageEnglish
Pages (from-to)1351-1357
Number of pages7
JournalOptical Materials Express
Volume3
Issue number9
DOIs
Publication statusPublished - 2013 Sep 20

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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