Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Optically Induced Anisotropy in Photoresponsive Sol-Gel Matrix Bearing a Silylated Disperse red 1

  • Published : 20001200
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Abstract

We synthesized the simple triethoxysilanes (SGDR1) bearing a disperse red 1 for thin film fabrication. The thin films were prepared using the solution of SGDR1 after hydrolysis and condensation. The films were annealed at two different temperatures such as $150^{\circ}C$ and $200^{\circ}C$. Trans-to-cis photoisomerization was observed under the exposure of 532 nm light with UV-Vis absorption spectroscopy. The kinetic study of photoisomerization was performed in the film. Reorientation of the polar azobenzene molecules induced optical anisotropy under a linearly polarized light at 532 nm. The effect of aggregation of the chromophores and annealing of the silicon oxide in the matrix were studied on the dynamic properties of isomerization and induced birefringence.

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