Impact of photoinitiators on the photopolymerization and the optical properties of inorganic–organic hybrid polymers

Houbertz, R.; Domann, G.; Schulz, J.; Olsowski, B.; Fröhlich, L.; Kim, W.-S.
February 2004
Applied Physics Letters;2/16/2004, Vol. 84 Issue 7, p1105
Academic Journal
Sol-gel synthesis allows one to produce inorganic–organic hybrid polymer materials which can be functionalized in order to tailor their physical and chemical properties. Besides, the resulting material properties are significantly influenced by further technological processing of the materials in thin film technology, i.e., the photochemical and thermal curing of the materials. In order to investigate the relationship between technological processing and material properties, a model system containing methacrylic groups as organically polymerizable units is chosen. The degree of conversion of the C==C double bond of the methacrylic group in dependence of the ultraviolet (UV) initiator concentration upon processing is characterized using Fourier-transform infrared spectroscopy. The data are correlated to measurements of the refractive indices at selected wavelengths. © 2004 American Institute of Physics.


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