Synthesis and optical properties of poly[4-methacryloxy-(4′-carboxy)-azobenzene] |
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| Authors: | M Sypniewska L Skowronski P Popielarski I Savchenko O Krupka V Smokal |
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| Institution: | 1. Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Torun, Poland;2. Institute of Mathematics and Physics, UTP University of Science and Technology, Bydgoszcz, Poland;3. Institute of Physics, Kazimierz Wielki University, Bydgoszcz, Poland;4. Faculty of Chemistry, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine |
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| Abstract: | AbstractIn the present work, the homopolymer built from the free radical polymerization of methacrylic monomer incorporating an azobenzene side-group has been synthesized and structurally characterized. The optical properties such as refractive index, extinction coefficient, absorption coefficient and optical energy band gap of poly4-methacryloxy-(4′-carboxy)-azobenzene] thin film prepared by high vacuum sublimation method were determined using spectroscopic ellipsometry combined with transmittance measurements.We found that in the spectrum of extinction coefficient there are absorption bands, which are assigned as the n-π* and π-π* electronic transitions of the azo compound. |
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| Keywords: | azo dyes thin film absorption coefficient refractive index extinction coefficient |
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