Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1497513 | Optical Materials | 2006 | 4 Pages |
Abstract
Photoinduced dichroism measurements have been performed in hybrid silica-based sol–gel films containing Carbazole units, 2,4,7-trinitro-9-fluorenone (TNF) and Disperse Red 1 (DR1) at different concentrations. The dynamics of the parallel and perpendicular absorbances gives information on the azo-dye orientation under illumination and suggests that the dominant mechanism for the photoinduced anisotropy is the angular redistribution of the DR1 trans-molecules. Recording, storage and erasure, have been demonstrated for writing and reading light at 488 nm.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
R. Raschellà, I.-G. Marino, P.P. Lottici, D. Bersani, A. Lorenzi, A. Montenero,