Photoinduced condensation of sol-gel hybrid glass films doped with benzildimethylketal
- 1 July 2001
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 16 (7) , 2143-2148
- https://doi.org/10.1557/jmr.2001.0292
Abstract
Sol-gel hybrid glass films doped with benzildimethylketal (BDK) were prepared from [(methacryloxy)propyl]trimethoxysilane, methacrylic acid, and zirconium n-propoxide. Polymerization of methacryl groups and polycondensation of alkoxides by UV illumination and baking were observed using Fourier-transformed infrared spectroscopy. Polymerization kinetics and refractive index increase depend on UV illumination time. The refractive index increase is sensitive to BDK concentration and agrees well with photodecomposition of BDK. Thus, it is found that the refractive index increase is made by incorporation of the radicals produced by photodecomposition of BDK in the network as well as polymerization of methacryl groups.Keywords
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